Construction Stage Research Articles

Carbon Footprint Quantification and Reduction Potential of Ecological Revetment in Water Net Region of China: Case Study in Yancheng, Jiangsu Province

With emphasis on constructing low-carbon cities, the renovation of the riverbank highlights energy conservation and carbon reduction. However, methods and standards for quantifying carbon emissions during ecological river channel construction are currently lacking. There is a scientific gap in research into carbon footprint assessment and reduction potential in ecological revetment technologies in water networks of China. This study attempts to clarify the carbon emission factors of different ecological revetment technologies and explore the carbon reduction potential during the construction stage of ecological rivers from the river revetment design, construction process and materials. The results show that in the carbon emission factors of six ecological revetment technologies, building materials have the largest adjusting potential for carbon reduction. The concrete material is responsible for 55.37–95.86% of carbon emissions in six ecological river technologies, with an average proportion of 69.96%. Accordingly, the concrete material emerges as the primary contributor to carbon emissions in ecological river engineering, followed by gasoline truck transportation and earthwork excavation. Moreover, the carbon emissions from ecological frame structures were the largest, followed by those of block structures, gabion structures, planted concrete and interlocking blocks and the wooden stake structure has the smallest carbon footprint. The choice of ecological revetment technologies is not only related to the realisation of regional water conservancy functions, but it also affects the carbon emissions of water conservancy projects. Engineers and decision-makers should pay great attention to the optimal design of the project, selection of low-carbon materials, energy saving and emission reduction in the construction process. This research not only provides guidance for design units in selecting appropriate river revetment technologies but also offers a theoretical foundation and data support for construction units to optimise their construction process management.

A new paradigm for construction safety management in China: Introducing knowledge graph and accident database into the early-stage of BIM

Significant progress has been made in managing construction safety risks based on Building Information Modelling (BIM) technology. BIM is active in all stages of construction, including5 planning, design, pre-construction and construction. However, the causes of risks and accidents are complex and can be related to humans, the environment, data and project portraits. The current construction safety risk management process lacks scientific reference and efficiency in conducting comprehensive inspections for specific projects. The uneven and substandard data quality in BIM models significantly undermines their effectiveness. This article introduces a knowledge graph and accident database through data crawling and structuring, with the use and analysis of an accident causation model, providing key risk elements and management directions for safety managers who require a high level of attention during the early-stage of BIM. The obtained knowledge graph was subjected to data mining analysis to explore the causes of accidents, considering the combined effect of multiple factors, such as “case-date-cause” and “case-address-cause”. The paradigm can be recognized by the BIM, and through the secondary development on the development side, a data interface is constructed to transfer the knowledge graph into the BIM. The approach mentioned in the article can provide standard and structured data for the BIM model, analysing high-risk points of projects, which is valuable for engineering applications.

The sensitivity of agricultural biogas plants to changes in energy prices in Poland

In Poland, despite ambitious plans from 15 years ago, when it was assumed that by 2020, an agricultural biogas plant would be standard in every commune, the potential of agricultural biogas has not been used due to the lack of stable legal regulations and financing programmes for the construction of the plants. The situation has now changed due to new forms of support systems, which motivated the authors to compare two agricultural biogas plants operating in the certificate system and the support system in the form of feed-in premiums. Moreover, the authors pointed to differences in the number of agricultural biogas plants and their capacity by voivodeship due to changes in legal conditions in force in two periods: from 1 January 2011, to 30 June 2016, and from 1 July 2016, to 19 January 2024. Based on the research methods used ‒ including Earnings Before Interest, Taxes Depreciation and Amortisation, the Internal Rate of Return, risk matrix and data analysis in spatial terms ‒ it was indicated that: 1. agricultural biogas plants are characterised by very high sensitivity related to the probability of risk in the case of investment costs, substrate prices and changes in energy prices; 2. financial support is important at the stage of construction of a biogas plant, which largely makes it possible to shorten the payback period and thus increase the willingness of future investors to invest in biogas plants and 3. in the periods analysed, significant differences were noted in the spatial location of biogas plants due to trends towards lower-power biogas plants, which is probably dictated by the constant and predictable premium system in the new support system.

Experimental Evaluation of Compressive Properties of Early-Age Mortar and Concrete Hollow-Block Masonry Prisms within Construction Stages.

Early-age masonry structures require temporary support until they achieve full strength. Nevertheless, there is a limited understanding of the properties of freshly laid masonry and the design of newly constructed, unsupported masonry walls. This situation has led to numerous instances of structural damage and injuries to workers, prompting conservative construction bracing techniques. This paper presents comprehensive experimental studies on early-age mortar cubes and masonry prisms to assess the effects of curing time on the compressive properties of masonry assemblies, which is necessary for the design of temporary bracing. The change in modulus of elasticity and compressive strength of masonry prisms and mortar with curing time has been experimentally assessed. The results indicate that the compressive strength of freshly cast mortar cubes is relatively insignificant until approximately 24 h after construction, when it was observed to increase logarithmically. Regarding the performance perspective, the compressive strength of early-age masonry prisms is inconsiderable, less than 15% of full strength during the first day after construction. By contrast, regarding the life safety perspective, the compressive properties of a mortar joint within a masonry assembly (which is of more practical interest) appear to have no effect on the failure strength of concrete masonry prisms over the range of ages tested. The failure modes of the early-age mortar cubes and early-age masonry prism samples depend on the curing time, and different failure modes occurred before and after the start of the primary hydration phase, which is 20.8 h after construction. It is anticipated that the proposed research will provide valuable material properties leading to efficient design of control devices (e.g., temporary bracing) and improved guidelines for concrete-block masonry construction.

Rate effect of rocks: Insights from DEM modeling

Rocks are subjected to different loading rates at different construction stages and engineering applications. The strength of rock usually increases with loading rate. This rate dependency is one of the time-dependent behaviors of rock, whereby the micro-mechanisms are believed to be the subcritical crack growth due to stress corrosions. However, no evidence is provided yet. This study investigated rate effects of rocks through a novel implementation of Parallel-Bonded Stress Corrosion (PSC) model in Discrete Element Method (DEM). Long-term microparameters in PSC are first calibrated through creep test. Then, a series of uniaxial compressive strength, direct tensile strength, and triaxial compressive strength tests are performed, with strain rates ranging from 1×10−7/s to 1×10−3/s. Results show that the uniaxial compressive strength is highly dependent on strain rates which quantitatively matches with the experimental data. At lower strain rate, more subcritical cracks propagate due to longer stress-corrosion reaction time, resulting in a lower strength. Besides, strain rate also influences the failure patterns in post-peak, with single failure plane at lower strain rates and multiple failure planes at higher strain rates. Rate effects are also observed in direct tensile strength tests, with similar rate of increase in strength and a transition in cracking pattern, which align with the experimental data, indicating tension-induced subcritical cracking is the unified underlying micro-mechanism of rate effects for both cases. However, in triaxial compressive strength tests, rate effects become less obvious with increasing confining pressure, consistent with experimental findings, as subcritical crack growth is suppressed in shearing processes.

Language Model Method for Collocation Rules of Parts of Speech in Machine Translation System

With the development of the times, modern society has now entered the Internet of Things (IoT) information age and Machine Translation (MT) plays an important role in increasingly frequent cross-language communication. In recent years, China's artificial intelligence industry has been in a stage of rapid construction, and the scale of its core industries has grown explosively, and a large number of artificial intelligence companies, including issuers, have emerged. Part of speech has always been a major problem in MT. One of the reasons is that there are a large number of multi-category words in Chinese and a large number of polysemy words in English, so part of speech collocation problems account for a large proportion of MT errors, which to some extent affects the credibility and accuracy of the translation. To reduce the error problem in MT of part of speech collocation, this paper used Machine Learning (ML) methods to study the Language Model (LM) of part of speech collocation based on recurrent neural network (NN) and compared it with the traditional statistical LM. In terms of the accuracy rate of the two LMS in the automatic evaluation index of machine translation, the experimental results show that the recursive NN LM established by the ML method had an accuracy rate of 80.42% and 83.57%, respectively, for the part-of-speech matching rules of the IoT machine translation system in the dialogue between Chinese and English and the translation of articles. The accuracy of traditional statistical LM evaluation was 71.29% and 69.52%, respectively. Compared to traditional statistical LM, the accuracy of translation was higher. This showed that the recurrent NN LM reduced the number of errors in the collocation of parts of speech in MT and improved the accuracy and credibility of MT.

Mechanical and instability analysis of asphalt overlay during construction on cement concrete pavement with a large longitudinal slope

ABSTRACT There are insufficient stability problems in overlay construction on tourist highways in mountainous and island areas, especially the pavement with a large longitudinal slope. To elaborate on the instability characteristics of overlay, the construction stage of overlay is divided into loose state, paving stage and initial compaction stage. The moulding methods of specimens during the paving and initial compaction stages were determined. The evolution law of contact-slip characteristics and shear strength of overlay was analysed. The mechanical models of the construction stability of the composite pavements were constructed, instability characterisation methods were proposed and instability characteristics of asphalt overlay during construction were discussed. The results show that the paving state of overlay can be simulated by changing the rolling frequency and the compaction number. There is a risk of slip instability of loose overlay and the longitudinal gradient should be less than 12% to reduce this risk. The critical instability equivalent area ratio and critical slip area proposed can quantitatively describe the shape of the instability body and the instability critical condition. The longitudinal gradient significantly affects the interlaminar instability, but the internal instability mainly depends on the shear strength of asphalt overlay.

Study on the coupling effect and construction deformation control of large deep foundation pit groups involving iron considering the coupling effect of seepage stress

Due to factors such as groundwater seepage and soil stress coupling effect, significant deformation and instability problems often occur during the construction process of super large deep excavation groups involving iron, seriously affecting the safety and stability of the project. This article aims to explore the coupling effect of super large deep excavation groups involving railways during the construction process, and how to effectively control construction deformation. This article combines theoretical analysis and numerical simulation to study the coupled effects of seepage and stress during the construction process of super deep excavation groups involving iron. With the help of finite element software, a numerical model of a large and deep excavation group involving iron was established, and the deformation and stress distribution at different construction stages were simulated. The research results indicate that the coupling effect of groundwater seepage and soil stress has a significant impact on the deformation and stability of the super deep excavation group involving iron. Therefore, reasonable construction measures and deformation control methods should be taken during the construction process.

Systematic initial embodied carbon assessment of concrete modular high-rise residential buildings: A case in Hong Kong

Reducing carbon emissions from buildings is essential to achieving carbon neutrality. Modular construction (MC) has been adopted as an innovative approach to improve construction sustainability. However, detailed embodied carbon (EC) assessment of concrete modular high-rise residential buildings is lacking. This study aims to systematically assess the cradle-to-end-of-construction EC of concrete modular high-rise residential buildings. A multilevel EC assessment model was proposed and validated to assess the EC at different spatiotemporal levels. A concrete modular high-rise staff quarters building was selected for case study. Its cradle-to-end-of-construction EC was quantified as 569.3 kgCO2e/m2 with around 80 % from material production. The structural modules with structural walls generated more EC than the nonstructural modules. The residential area comprising the modules had higher EC emissions than the communal area. The case building generated 14.6 % less cradle-to-site EC from the production and transportation of structural materials but 20 % more cradle-to-end-of-construction EC compared with two prefabricated panelized building counterparts, respectively. The cradle-to-end-of-construction EC of the case building was reduced by 8.3 % by eliminating the nonstructural module floor and by 16.7 % by further decreasing the nonstructural module walls. The results show that concrete MC reduces the EC at the construction stage but does not necessarily achieve a lower initial EC than its conventional counterpart. Resolving the double-panel issues can effectively mitigate the EC of modular buildings. These findings demonstrate the effectiveness of the proposed multilevel EC assessment model and provide valuable insights for future research on the systematic EC assessment and reduction of modular buildings.

Environmental Impact Assessment of Using Vernacular Materials for Sustainable Developments: Insights from an Eco-Sensitive Resort in India

It is known that quantification of embodied carbon and associated carbon emissions of different building types gives indications of the environmental impact of a structure during its construction, operation, and demolition stages and the various levels of boundary conditions within the framework of life cycle analysis (LCA). In this context, this study examines an eco-sensitive resort, located in a warm and humid climate. It conducts a comparative assessment of embodied carbon and resultant carbon emission by using conventional and alternative vernacular construction materials for foundation, superstructure, walling, roofing, flooring, joinery, finishing details, and site-work. The research method includes calculation of total quantum of materials used in the selected eco-sensitive resort project with one case scenario of using conventional construction materials and another case scenario of using their vernacular alternatives for all the different blocks with MS Excel© tool. The resultant values of their embodied carbon and carbon emission are calculated by using the globally recognized database and other calibrated LCA tools. The results show that in the high-end cottages with conventional brick and RCC construction systems, the superstructure and finishing cause the major amount of energy consumption during the construction stage. Using alternative vernacular materials like bamboo in the super structure, local tandoor stones in flooring reduce the embodied energy and carbon emission level significantly. The assessment shows that a 38.8% reduction can be achieved in embodied energy. The carbon emissions decrease by 1680 MT if vernacular materials are used. This finding is useful for building owners and designers in selecting holistic and environmentally sustainable building materials to produce sustainable buildings.

Static analysis of semi‐underground double‐storey squat silo

AbstractThe semi‐underground double‐storey squat silo (SUDSSS) is a new type of silo with the advantages of preserving grain quality. In this paper, a numerical model of SUDSSS was constructed using solid elements. The proposed numerical model was validated by test results of an experimental underground silo, and the results demonstrated that: (1) Before and after backfilling, the radial and circumferential stress of the underground storey reached their maximum at 2/3 from the bottom and 2/3 from the ground surface, respectively; (2) As the height of grain storage increases, the silo wall stress in the overground storey increases. From the top of the underground storey up to 1/4 height of the overground storey, the stress of silo wall increases. (3) For the underground storey, the maximum stress occurs at 1/3 of the way from the apex of bottom cone.Practical applicationsThe semi‐underground double‐storey squat silo is a new grain storage device proposed by this paper, which consists of two layers. The lower layer is located in the ground and can utilize the shallow ground temperature to realize the green and low‐temperature storage of grain, the upper layer is conducive to the turnover of grain, which can ensure the quality of grain storage. The new silo has the advantages of saving land, energy saving and carbon reduction. Based on the silo, this paper investigates the stress–strain properties of the silo before and after soil backfilling during the construction stage, and obtains the change pattern of the static mechanical properties of the silo. This paper analyses the mechanical properties of semi‐underground double‐storey squat silo under different storage conditions at the grain storage stage, and studies the change patterns of the mechanical properties of the silo body under different storage heights.

Systematic literature review of BIM application in the whole life cycle of green building projects

ABSTRACT Building information modelling (BIM), as an effective digital method of information representation in the field of construction engineering, helps to deal with a series of works including design optimization, construction planning, and facility management. BIM enhances sustainability through energy simulations, material selection, waste reduction, and energy monitoring. However, challenges like talent shortage, interoperability issues, data management, and lack of standardization hinder its widespread use. Current research lacks systematic exploration of BIM's application in green buildings' life cycle, limiting further development. To fill this research gap, this study aims to provide a systematic review of the application of BIM in the design, construction and operation stages of the whole life cycle of green buildings. As a guideline to conduct this research, the preferred reporting items for systematic reviews and meta-analyses (PRISMA) model are used to identify the main procedures for literature screening and review. Through the systematic review, the main applications of BIM technology in green buildings are summarized, while the challenges in the current applications and the corresponding solutions are discussed. Finally, the study proposes key points for the future development of BIM to help the construction industry truly realize the development of man and nature and harmony and greenery.

An Analysis of Achievement and Cost Efficiency in the Implementation of the Green Construction Concept in The Construction of a Public Service Mall in the City of Tegal

Green construction is a concept in the planning and implementation stages of construction aimed at reducing the negative environmental impacts of construction activities. The Public Service Mall Building Project in Tegal City is a building project that requires costs from planning to maintenance. The construction of a project certainly requires substantial costs. The objective of this research is to evaluate the achievements and determine the cost efficiency of using the green construction concept. This research was conducted through a preliminary survey of the involved parties who understand the green construction concept to identify the most applied categories, namely the use of refrigerants without Ozone Depleting Potential (ODP), regional materials, environmental control over cigarette smoke, and pollution from construction activities. This type of research is qualitative, with data collection techniques carried out through interviews and direct observation. The data analysis for cost efficiency involves comparing green construction concepts with non-green construction concepts. The results of the benchmark measurements for using refrigerants without Ozone Depleting Potential (ODP), regional materials, and environmental control over cigarette smoke in the green construction concept achieved 100%, while the benchmark measurement results for green construction concerning pollution from construction activities achieved 50%. Based on the cost usage analysis in the upper structure construction of the Public Service Mall Building in Tegal City, the cost usage of the GC concept is 9.25% more efficient than the conventional concept.

Model Test and Numerical Simulation of Two Typical Close-Fitting Pile–Wall Integrated Structures in Deep Excavation

Compared to conventional support methods, the close-fitting pile–wall integration technique features a minimized construction spacing between the retaining pile and the basement retaining wall. This approach leverages the pile stiffness to minimize the wall thickness and enhance underground space utilization. However, it currently lacks significant discussions and measured data about the interaction laws between the pile and the wall. The model test and finite element method (FEM) are employed to study the deformation and internal force interaction laws of two typical close-fitting pile–wall integrated structures, and a comparison with conventional design is conducted. Furthermore, this study separately investigates the impact of sensitivity factors, specifically the pile–wall stiffness ratio and floor plate stiffness, on both structures during the basement construction and serviceability stages. The test results can closely match the numerical simulation. The study results reveal that the wall impacts the bending moment of the pile to some extent. The internal force in the wall is significantly influenced by the lateral deformation of the pile and the floor plate. Compared to conventional designs, this structure significantly reduces the bending moment of the wall, particularly in the composite structure. Additionally, the analysis of sensitivity factors reveals their considerable influence on the pile–wall interaction.

Examining undergraduate students' abstraction of conic sections in a dynamic geometry environment

In solid geometry, the concept of conic sections plays an important role in teaching graphs such as parabolas, ellipses, and hyperbolas to undergraduate students in Mathematics Education. It is understood that the abstraction process in mastering conic sections is strongly needed. This study examines the abstraction process of conic sections among third-year undergraduate Mathematics Education students (4 males and 21 females) at Universitas Muhammadiyah Malang (UMM), Indonesia. The data was collected by analyzing students' responses in a 60-minute diagnostic test using the Abstraction in Context (AiC) framework. The test consists of 3 questions, validated by 2 Professors of UMM (average score = 4.14) and 2 lecturers (average score = 4.04). The results showed that 1 male and 11 female students did not reach the construction stage of AiC. Subsequently, a student with a low diagnostic test score and the least completion of AiC stages was observed further through an interview. This student passed through all stages of abstraction with the help of DGE. We also underscored undergraduates' challenges in this process, particularly in visualizing conic section objects, spatial thinking, and employing appropriate mathematical signs. Based on these findings, further research with a broader sample is needed to explore diverse abstraction processes.

Approaches to sustainable development of production systems in the sphere of housing construction on the basis of application of “green” standards

Aim. To determine the problematics of the application of “green” standards in the field of housing construction and its impact on the management of sustainable development of production systems based on the application of “green” standards in the marketing sphere, as well as to propose options for solutions to problematic issues and directions for further research.Objectives. To analyze statistical information, as well as regulatory documentation in the field of “green” certification of residential real estate; to identify the problems of applied standards; to offer possible solutions to problematic issues in the aspect of application of “green” standards in the marketing sphere; to determine the necessary measures to implement the principles of sustainable development of production systems in general and adaptation of “green” standards in the assortment policy, marketing sphere of production systems in particular; to determine the directions for further research.Methods. When conducting the research, general scientific methods such as general analysis, expert assessments and generalization, document analysis, abstraction, comparison were used.Results. In the course of the study, the research revealed consolidated groups of problems, including “green” certification in the sphere of individual housing construction in conditions of non-systemic control of the process and results of activity in the marketing sphere of production systems (defined as a goal of further research); the problems of application of the approved and implemented in 2022 “green” state standard in the field of apartment building were revealed. During the analysis of regulatory documentation (GOST R 70346-2022. “Green” standards. Buildings of multifamily residential “green”. Evaluation methods and criteria for design, construction and operation) methodological problems of applying the criteria of group No. 6 “Materials and resource efficiency” are studied, possible solutions are proposed, directions for further research are outlined, the impact of these issues on the complex of management of sustainable development of production systems based on the application of “green” standards in the marketing sphere is shown. In addition, the classification of building evaluation stages in terms of construction stages is given.Conclusions. Approaches to the sustainable development of production systems in the sphere of housing construction, production and application of building materials have a special significance in public policy. An example is the “green” state standard, which is adopted in 2022, its popularization including through “Dom.RF”. However, the current certification mechanism, with all its advantages and merits, has a number of limitations in its application: lack of information from the developer, especially about completed objects, lack of comprehensive systems and registers of “green” solutions and materials, insufficient regulatory mechanisms in case of conflict between environmental friendliness and economic efficiency. These limitations are analyzed in the context of the block of criteria № 6 “Materials and resource efficiency”, and possible solutions are proposed, including the development of a comprehensive system and register of solutions and materials that meet the principles of sustainable development; accumulation of optional but necessary data on the certification of materials and solutions by the developer; proportional reduction of the tax base to compensate for the additional costs arising from the use of more expensive but more environmentally friendly materials and solutions; introduction of a new system and registry of “green” solutions and materials that meet the principles of sustainable development. The authors also identify directions for future research.

Seismic performance assessment of a base-isolated hospital building subjected to February 6, 2023, Kahramanmaraş, Türkiye earthquakes (Mw 7.7 Pazarcık and Mw 7.6 Elbistan) and seismic fragility analysis considering different construction stages

The construction period of large structures such as hospitals can be prolonged due to complex construction processes. The behavior of frictional pendulum systems (FPSs) is strongly influenced by the seismic weight of the superstructure and the corresponding coefficient of friction. Therefore, the effects of the isolator behavior, which varies throughout the construction stages (CSs), on structural responses should be evaluated. Existing literature lacks adequate investigation into the behavior of isolated structures subjected to earthquakes during CSs. To address this gap, this paper investigates the structural performance of a base-isolated hospital building equipped with FPSs that experienced residual displacements during the February 6, 2023, Kahramanmaraş, Türkiye earthquakes (Mw 7.7 Pazarcık and Mw 7.6 Elbistan). At the time of the earthquakes, the building was still under construction (65–70 % complete). In addition to the hospital building under consideration, there were three more hospital buildings equipped with FPSs under construction during the 2023 Kahramanmaraş-Türkiye earthquakes in Türkiye. The seismic behavior and residual displacements of the structure during this CS were evaluated and numeric results were validated with real data measured in the field. Moreover, fragility analyses were performed for different CSs of the hospital building to reveal the probabilities of damage for base-isolated buildings exposed to earthquakes at various CSs. For fragility assessment, damage states (slight, moderate, extensive, collapse) were defined and four damage measures were chosen. Thus, the extent to which construction stages affected which types of damage was determined. A total of 1296 nonlinear time-history analysis were conducted to obtain fragility curves for all CSs and damage measures considering lower bound, nominal, and upper bound values of isolators. Selected isolated hospital building showed vulnerability in maximum top floor acceleration (MTFA) and maximum isolator displacement (MID) damage measures, but resilience in maximum roof drift ratio (MRDR) and maximum inter-story drift ratio (MIDR) damage measures. For the design basis earthquake (DBE) level, the probability of reaching the extensive damage state was 5.25 % for the MID, 11.39 % for MTFA, and 0 % for MIDR and MRDR. Similarly, for the maximum considered earthquake (MCE) level, these values were determined as 34.09 % for MID, 43.42 % for MTFA, and 0 % for MIDR and MRDR. The analysis revealed that while the probability of damage to the base isolation system was not related to CSs, residual displacements increased as construction progressed. Collapse thresholds for MIDR and MRDR demand exceptionally severe seismic events. As construction progresses, probabilities of exceeding damage states increase for MIDR and MRDR, indicating heightened vulnerability.

Shipbuilding 4.0: A Systematic Literature Review

Existing research in the shipbuilding field tends to focus on isolated single aspects of Industry 4.0 (I4.0) without a full picture. To address this gap, this paper seeks to offer a thorough and in-depth examination of the concepts and technologies necessary to integrate I4.0 into the design, construction, maintenance, and other stages throughout the entire life cycle of a ship. This paper will firstly examine the recent developments and identify the gaps in I4.0 application within shipbuilding. By conducting a systematic literature review on 68 publications through an appropriate review methodology, we synthesize the current state of I4.0 research in the shipbuilding industry, propose a framework for the application of I4.0 in shipbuilding to analyze the progression and research agenda of I4.0 in the shipbuilding sector, and discuss its implications. The Shipbuilding 4.0 framework proposed comprises five main components: concepts, value chain, smart factory, smart manufacturing, infrastructure, and technologies. The proposed framework aims to enhance the understanding of both academics and practitioners regarding the specific needs of the shipbuilding industry and the role I4.0 can and should play in its advancement.

La Persona y el Marketing Científico Digital

Introduction: Examines the implications of marketing in improving content related to scientific production, focusing on Academic Search Engine Optimization (ASEO) and highlighting the role of Digital Scientific Marketing. Methodology: It presents the constructive stages of Digital Scientific Marketing from the ASEO perspective, considering the Author dimension and the formal and informal channels that constitute digital information environments. Results: Describes the stages of Planning, Persona Definition, Content Creation and Definition, Content Distribution, Content Evaluation, and Result Measurement for the application of Digital Scientific Marketing in the ASEO context. Conclusion: The application of Digital Scientific Marketing requires reflection on the target audience and the proper delivery of content, taking into account social media metrics and effective audience engagement. Integrating Digital Scientific Marketing with Academic Search Engine Optimization (ASEO) provides new perspectives for scientific research, aiming to reach audiences beyond the specialized public. This approach can foster research in various knowledge areas and lead to the development of new lines of investigation.

Structural health monitoring of a swivel bridge for evaluating builder comfort under train-induced vibration

The swivel bridge being built overcrossing the railway service line, the builder’s comfort level under the train-induced vibration is one of the critical issues in the bridge construction process. This study compares the applicability and usage limits of existing vibration comfort evaluation indicators for reasonably selected vibration comfort evaluation criteria. A framework is therefore proposed to evaluate builder comfort under train-induced vibrations during the construction process. Taking a swivel bridge overcrossing the Shanghai-Kunming railway line as an example, the structural health monitoring system is performed in three construction stages of the swivel bridge. Then, the acceleration response is measured, the acceleration-based evaluation indicators are compared, and the builder comfort level is evaluated in the three construction stages. The results demonstrate that the on-site measured indicators are close to the standard limits, and the builder comfort on the swivel bridge under the excitation of passing trains should be given attention.