Development Of Construction Technology Research Articles

Creep Coefficient for Self-Compacting Concrete (SCC)

With the development of construction technology, self-compacting concrete hasstarted to be widely used in the construction of buildings. The specific properties of selfcompacting concrete have made it particularly useful for concreting the structuralelements of high-rise buildings. The strains characteristics of concrete are important toknow both in the initial stage of concreting and in the long process, in order to takemeasures to minimize their impact on cracking and reduction of structure elements.In this regard we have conducted an experiment to investigate shrinkage strains andcreep strains in reinforced concrete beams as well as the determination of the creepcoefficient. Given that the shrinkage and creep strains are together, it is necessary toseparate the creep strains from the shrinkage strains to determine the creep coefficient.For the realization of this separation, we have prepared the same samples which havebeen used for the determination of shrinkage strains and samples which have beeninserted into the mechanisms for the realization of adequate force for thedetermination of the creep strains.

Development of ANP-based greenness evaluation model of construction technologies in China

Purpose Green construction is increasingly vital in promoting sustainability within the construction industry. The development and promotion of green construction technologies are central to this endeavor. However, existing evaluations mainly target building components, construction projects or certain construction processes. There is a notable absence of research into the greenness of construction technologies. Assessing the greenness of construction technologies is crucial for streamlining resource utilization and reducing waste. To address this gap, this study aims to establish a Greenness of Construction Technologies (GCT) evaluation model using the method of analytic network process (ANP). Design/methodology/approach Green construction is increasingly vital in promoting sustainability within the construction industry. The development and promotion of green construction technologies are central to this endeavor. However, existing evaluations mainly target building components, construction projects or certain construction processes. There is a notable absence of research into the greenness of construction technologies. Assessing the greenness of construction technologies is crucial for streamlining resource utilization and reducing waste. To address this gap, this study establishes a GCT evaluation model using the method of ANP. Findings Among the four formwork technologies of plastic, steel, plywood and wooden formwork, the plastic formwork exhibits the best performance in terms of environmental friendliness, economic and social effects, while facing issues like material wastage and low static strength. The results align with practical observations which validates the model’s applicability. Originality/value This research contributes to the field by introducing the concept of greenness into construction technology evaluation for the first time. The establishment of the GCT evaluation model promotes the adoption of green construction technologies and advances sustainable practices in the construction industry.

Investigation of Traditional Bamboo House Construction Practice and the Need for Bamboo Construction Technology in Awi Zone

Bamboo for housing construction is a paramount material due to its adaptability characteristics, cost advantage, wider accessibility and environmental friendliness. This study focused on bamboo technology for bamboo housing construction in Awi Zone of Ethiopia and it has also identified the current use of bamboo for construction, challenges facing bamboo improvement, factors influencing bamboo application and to propose the mechanism of technology transfer in bamboo house construction technology transfer in the bamboo house construction future. The main tools for the collection of data were questionnaires, interviews and case studies which were used to identify the various challenges and factors influencing bamboo construction technology. The data were analyzed using a Statistical Package for Social Sciences software within its mean value. The findings of this study indicate that lack of research funds for bamboo building materials with a mean of 4.22; inadequate technologies and weak technology transfer in bamboo construction with a mean of 4.13 and lack of finance to facilitate bamboo construction technology with a mean of 4.11 are the major problems of bamboo construction technology development.

Numerical Study of Wind Flow Behavior Around High-Rise Buildings Using Computational Fluid Dynamics (CFD)

The development of civil construction technology in Indonesia is progressing along with the rise in high-rise building construction. The emergence of high-rise buildings has altered wind flow characteristics, leading to phenomena that can directly impact surrounding structures. One of the observable phenomena is the wind speed amplification caused by the narrowing of the wind flow section, known as the Venturi effect. This study aims to compare the outcomes of two Computational Fluid Dynamics (CFD) methods—Reynolds-Averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES)—against experimental results. The study employs a model of four buildings of similar height and symmetrical positioning, with a 72 mm passage width, to verify numerical simulations against experimental data. The RANS method yields a maximum wind speed amplification of 14.9% along the passage's centerline, which remains below the experimental prediction of 25.5% in Zone A. Conversely, the LES results show a higher wind speed amplification, reaching 40.2%, surpassing the experimental findings. Nevertheless, LES identifies a similar location for wind speed amplification observed in Zone A. Additionally, CFD simulations were conducted to analyze the effects of passage width, revealing that a passage width of 54 mm produces the highest wind speed amplification, with a ratio value of passage width to building influence scale (L/S) of 0.481. Further research on building model scale may be necessary to verify CFD accuracy compared to the actual scale. However, such simulations demand exceedingly high computational resources with current technology.

THE INFLUENCE OF THE DEVELOPMENT OF COMPUTER TECHNOLOGIES ON THE PROCESS OF ARCHITECTURAL DESIGN

Problem statement. Computer technology is becoming increasingly popular in the architectural field, and its use can have both positive and negative consequences. Computer modeling allows architects to create and analyze designs faster and more accurately, which improves the quality and efficiency of construction. The development of computer technologies has significantly changed the approach to design in architecture. However, dependence on computer technologies can lead to the loss of the ability to analyze and design architectural objects independently. Purpose of the article. To analyze the impact of computer technology on architecture and to assess the perspective of this impact in the future. Conclusion. Today computer technology is used everywhere. The development of modeling and construction technologies provides new opportunities in the field of architecture. The use of computer technology at all stages of construction allows architects to create increasingly complex projects with high accuracy and efficiency. The use of new technologies in the field of architecture will allow to provide a more complex approach to design, which can cover more characteristics necessary to take into account. Generative design can be used to provide a more efficient and accurate design process. Virtual and augmented reality (VR and AR) provide a wide range of opportunities for designing and modeling architectural objects. With the help of BIM technology, an information model is created, which provides an accurate vision of the project as a whole. An important component of this technology is a single information space, a database. Artificial intelligence can create thousands of building options. The question of how to use resources more rationally (time, material, human) is one of the key issues of our time. Computer technologies help solve these problems and invent new methods of designing and building architectural objects. Ukraine, as one of the most digitized countries in the world, is rapidly introducing the latest technologies into the design work processes, which will lead to positive changes in the state's architectural image.

Comparison of Marshall Quotient Value on Laston Ac-Wc with Additional Pecan Shell Charcoal Waste

Some factors that affect the durability of asphalt include the type of asphalt concrete mixture used, Mixed materials must have good mechanical properties and be able to support high traffic loads. This study aims to determine the characteristics of marshalls in the addition of asphalt coated concrete wear (laston AC-WC with a percentage of hazelnut shell charcoal mixture of 0%, 2%, 3%, and 5%, and determine the effect of the quality of stiffness of the hazelnut shell charcoal waste mixture. This study used the marshall test method. The results showed that wear-coated concrete asphalt (AC-WC) with the addition of 5% hazelnut shell charcoal met the specifications, as well as a mixture of asphalt concrete with a charcoal content of 0% hazelnut shells or pure test objects. The value of VIM, and VFA is not a percentage of 0%, 2%, 3%, and 5% that meet the predetermined specification so that the difference in pure Ac-Wc laston and Ac-Wc laston with coconut shell charcoal additives, can be proven by the Marshall quotient value in the absence of a mixture with an average Marshall Quotient value of 590.13 Kg, in a mixture of 2% with an average Marshall Quotient value of 1004.91 Kg, on a mixture of 3% with an average value of 1024.99 Kg, and on a mixture of 4% with an average value of Marshall Quotient of 681.93 Kg. Thus, it can contribute to the development of road construction technology and become a reference in the use of hazelnut shell charcoal in wear-coated concrete asphalt mixture (AC-WC) as an alternative to environmentally friendly and sustainable mixed materials

Introduction of construction planning with building information modeling (BIM) technology systems at SMK 26 Jakarta

The construction industry is undergoing significant transformation in the era of globalization and technological advancements, particularly with the implementation of Building Information Modeling (BIM) systems. Accelerating the implementation of BIM in Indonesia requires collaboration among various parties, including academia, practitioners, and institutions. Therefore, it is crucial for students to learn about BIM to prepare a competent and adaptable workforce for the future development of construction technology. The aim of this activity is to enhance understanding of the importance of introducing construction planning with BIM technology systems to students at SMK Negeri 26 Jakarta, in preparation for them to become ready-to-use workforce in the construction industry, which is increasingly oriented towards information technology. The implementation method involves delivering material sessions followed by questionnaire sessions to assess the level of understanding among students. The results of this activity indicate that 26 students (53.1%) are very proficient in this subject, 19 students (38.8%) are categorized as proficient, and 4 students (8.2%) are categorized as adequately proficient.

Synergistic Relationship, Agent Interaction, and Knowledge Coupling: Driving Innovation in Intelligent Construction Technology

The core driving force behind innovation in intelligent construction technology is synergistic relationships. It has become common practice to promote synergistic innovation through agent interaction and knowledge coupling in the development of intelligent construction technology. Drawing upon synergetics, social network theory, and the knowledge base view as theoretical frameworks, this research examines the impact of synergistic relationship, agent interaction, and knowledge coupling on innovation in intelligent construction technology. An empirical analysis of 186 questionnaires revealed the following: (1) regarding synergistic relationships, both horizontal synergy and vertical synergy significantly positively impact innovation in intelligent construction technology. (2) Concerning agent interaction, strong interaction serves as a mediator between horizontal synergy and innovation in intelligent construction technology, while weak interaction serves as a mediator between vertical synergy and innovation in intelligent construction technology. (3) Knowledge coupling has a positive moderating effect on innovation in intelligent construction technology under a strong interaction and a negative moderating effect on innovation in intelligent construction technology under a weak interaction. This study contributes to expanding the theory of synergistic relationships and its application in the context of intelligent construction technology. Furthermore, it provides practical insights and guidance for construction companies seeking to enhance innovation in intelligent construction technology through the utilization of agent interaction and knowledge coupling.

Implementation Building Information Modelling For Construction Projects In Remote and Challenging Locations

This research discusses the innovative implementation of digitalization of infrastructure construction based on Building Information Modelling (BIM) 5D on the Toapejat - Rokot - Sioban Road and Bridge Handling Project (Simp. Logpon) in the Mentawai Islands. The focus is a collection of AEC software from Autodesk, including Revit, Civil 3D, Navisworks, and BIM 360, which supports the project's BIM goals. This method is proven to provide a holistic approach to planning, design, construction, and management of infrastructure projects. In the face of growing competition and innovation of BIM technology, this study emphasizes the need for continuous innovation for construction companies to participate in the development of digital construction technology. The project is considered a clear example of BIM's crucial role in overcoming construction challenges in remote areas, unlocking potential for future projects on isolated islands.

A Dynamic Evaluation Method for the Development of Intelligent Construction Technology in the Construction Field Based on Structural Equation Model–System Dynamics Model

In order to explore the development trends of intelligent construction technology in the field of construction, this paper constructs a system dynamics (SD) model of the application and development of BIM and the new-generation information technology in the construction industry based on SD theory and a structural equation model (SEM). Vensim DSS is used to explore the relationship between the SD model and six subsystems. The dynamic simulation and the sensitivity analyses are also conducted. Results show that during 2023–2050, as the time series advances, the effect value of the dynamic simulation gradually increases. From 2035, intelligent construction technology shows a trend of rapid development between various subsystems and the SD model. The adjusted model and the status of the subsystem are consistent with the SD model simulation curve. It is verified that intelligent construction technology has good development prospects in the construction field.

Building practice of energy efficient earthquake-resistance buildings

The article discusses technologies for constructing energy-efficient, earthquake-resistant buildings that have increased rigidity and strength in their main components. These technologies utilize structures with enhanced damping and active seismic insulation systems. Practical implementations, design features, and technological aspects are examined. An analysis is conducted on the characteristics of current technologies, the conditions for production and installation, repairability, and their impact on the building's energy efficiency during operation. Technologies are systematized and categorized based on their principles of seismic protection during the analysis process. The analysis was conducted based on the following main criteria: steel consumption, suitability of repairable technologies used, possibility of implementing seismic protection during building reconstruction, ability to withstand seismic effects, feasibility of implementation, and energy efficiency. It has been determined that traditional technical solutions to increase rigidity and strength, such as introducing structures with increased damping used for buildings with precast, monolithic, and precast-monolithic frames, require a significant amount of additional resources. These solutions are characterized by accumulation of failures in individual hidden elements due to seismic loads, low maintainability, and often decrease the energy efficiency of the building. The use of seismic energy-absorbing mechanisms with high efficiency can significantly reduce resource costs for construction and increase maintainability, thus improving the overall sustainability of the structure. Based on the findings of the analysis, the following recommendations are made for conducting further studies on active protection systems in terms of design, development of construction technology, and potential application in the renovation of existing buildings.

2022 개정 교육과정에 따른 초등 실과 ‘건설 기술’ 영역의 내용에 관한 연구

This study outlines the unit titles and detailed contents of the newly introduced construction technology in the 2022 revised curriculum for elementary school Practical Arts subjects. It outlines the tasks involved in the creation of construction structures. The research findings are as follows.
 First, the content encompasses understanding the meaning and characteristics of construction technology, exploring eco-friendly construction structures, and engaging in activities to create simple construction structures.
 Second, the content related to construction technology in middle school technology and home economics 1 subjects under the 2019 revised curriculum covers the meaning, understanding, system, world, characteristics, development, and prospects of construction technology, along with the production and use of construction structures, with tasks involving the creation of a house and a bridge.
 Third, the revised curriculum introduced construction technology as a comprehensive unit. Understanding construction technology and various construction structures, exploring eco-friendly construction structures in daily life, and participating in activities for creating construction structures were presented as middle units. Furthermore, smaller units include the meaning of construction technology, architectural technology, and civil engineering technology; the meaning of construction structures, architectural structures, and civil engineering structures; the exploration of eco-friendly construction structures; and making creative model houses and strong model bridges.
 Fourth, construction tasks involve building a model house and undertaking projects such as suspension bridges, cable-stayed bridges, and arch bridges.
 Fifth, according to the feedback from elementary school teachers, the content related to construction technology was appropriately structured. Constructing a model house was seen as an engaging task capable of capturing students' interest, and building model bridges was also deemed appropriate and engaging.

Research and development of indoor positioning technology based on visible light communication

Indoor and underground space positioning and navigation systems are important infrastructure for urban lifeline construction. With the development of 5G communication technology, artificial intelligence, intelligent construction, and other technologies, autonomous mobile terminals have become the main application subjects, and the requirements for accuracy and ubiquity of indoor positioning technology are also increasing. Two main indoor positioning technologies, sensor based and RF signal based are introduced, basic concepts of new visible light communication positioning technology are discussed, and in-depth results on non-imaging and imaging positioning methods are presented in this article. We propose a pose-assisted imaging positioning method applied in the 11 m × 8 m × 3.5 m room, which is based on visible light communication. This test shows that this method can achieve the positioning results with a plane positioning error less than 5 cm and the height error less than 6 cm by using low-cost sensors. Visible light positioning technology provides a cost-effective and convenient new solution for indoor positioning, simultaneously solving the integration problem of communication and positioning. It can provide positioning technology supporting the construction of urban lifelines in enclosed spaces.

Dry mixes on gypsum and mixed bases in the construction of low-rise residential buildings using 3D printing technology

3D-printed building construction technology is developing in most countries, such as France, China, Russia and others, and the dry mixes and equipment used are being improved. The development of 3D-printing construction technology is dictated by its many advantages: architectural diversity, speed and automation of the technological process of construction of buildings and structures with a noticeable reduction in the cost of production. However, there are a number of problems of this technology that are waiting for optimal solutions. The paper proposes solutions to two such problems: firstly, the choice of mixture with gypsum and gypsum-cement binders, ensuring the continuity of the 3D printing process of the building and allowing the construction of buildings up to three floors with sufficient safety margin, high seismic stability, as well as with good heat and noise insulation; secondly, the design of buildings with a rational structural and technological solution of the roof and floor, allowing the interface of these structures with load-bearing printed walls. Different compositions of dry mixes were tested in a series of field tests of large-sized wall blocks made with the use of a construction 3D-printer and filled with especially light porous expanded claydite, expanded clay concrete or heat-insulating foam gypsum with subsequent testing on press equipment of increased load-carrying capacity (with determination of bearing capacity and deformability of the large-sized block). When designing low-rise buildings, erected by additive technology, as an optimal design of floors, it is proposed to use frame-monolithic beam structures made of metal thin-walled steel galvanized profiles, filled with foam gypsum mix, providing heat and noise insulation and covered with a thin layer of high-strength self-leveling gypsum mix, providing the necessary structural strength of the floor and, accordingly, the minimum load on the foundation.

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Study Of High Performance Concrete Using Local Materials (Fly Ash Of Pltu Labuhan Angin, Mount Sinabung Volcanic Ash And Silica Sand) On The Mechanical Properties Of Concrete

Currently in Indonesia a lot of construction work and concrete is one that is widely used. In the development of concrete construction technology, especially in Indonesia, it is necessary to have concrete capable of carrying high loads using available materials. The development of high quality concrete has 3 levels, namely High Strength Concrete (HSC), High Performance Concrete (HPC) and Ultra High Performance Concrete (UHPC). Against the background of future needs, in this study experiments were carried out in a concrete laboratory to obtain high performance concrete mixes with local materials. At the experimental stage, testing of tools and materials, concrete mix, casting, slump test, manufacture of specimens, maintenance, checking of unit weight, compressive strength test, split tensile strength and modulus of elasticity was carried out. In that study there were 11 variations. Furthermore, the test results were analyzed by the data to draw conclusions. The results showed that the average compressive strength of concrete at 3 days of age was relatively high, namely 53.8 MPa which could be used for fast precision work. In variation 11 mixture (PCC Cement, Silica Fume, Sand Mesh 35-60, Silica Mesh 325, Water, Viscocrete Superplasticizer 8670 MN, Fly Ash 7% and Polypropylene Fiber 0.2%) tested for 28 days, the compressive strength reached 87.5 MPa, so it can be said as HPC concrete. In this study it was concluded that the use of local materials, Sinabung Volcanic Ash waste and fly ash can improve the quality of concrete and can also reduce environmental pollution.

Analysis of nonlinear landscape structure components accurate construction information delivery based on Rhino+Grasshopper parametric modeling

The development of digital construction technology has made the practical construction of nonlinear forms possible. In landscape architecture projects, Nonlinear Landscape Structures (NLS) have become the mainstream in design and aesthetics. However, the complex forms of NLS components make it challenging to deliver accurate construction information using traditional design methods. The application of Rhino+Grasshopper Parametric Modeling (RGPM) technology allows the construction of nonlinear geometric forms based on mathematical logic, facilitating precise engineering construction information delivery for NLS components. Nevertheless, there are existing gaps in current research on accurate construction information delivery for NLS components based on RGPM. Firstly, current research primarily focuses on large public buildings, lacking attention to the spatial scale of landscape structures. Secondly, there is a lack of systematic integration based on technical research contents. Thirdly, there is a lack of specific technical application analysis combining actual design, leading to weaker practical guidance for industry practitioners. Therefore, this study selects the precise engineering construction information delivery of perforated panel walls in the space under the Sanya Bridge and the landscape platform of the Beijing Jinding Mountain as research cases. Through the analysis of construction information delivery content and technical challenges in these cases, the necessity of RGPM application is clarified. By analyzing the application of RGPM technology and its outcomes in these cases, concrete examples are provided for the precise construction information delivery of NLS components to fill the research gaps and provide theoretical foundations and application examples for future research.

Analysis of nonlinear landscape structure components accurate construction information delivery based on Rhino+Grasshopper parametric modeling

The development of digital construction technology has made the practical construction of nonlinear forms possible. In landscape architecture projects, Nonlinear Landscape Structures (NLS) have become the mainstream in design and aesthetics. However, the complex forms of NLS components make it challenging to deliver accurate construction information using traditional design methods. The application of Rhino+Grasshopper Parametric Modeling (RGPM) technology allows the construction of nonlinear geometric forms based on mathematical logic, facilitating precise engineering construction information delivery for NLS components. Nevertheless, there are existing gaps in current research on accurate construction information delivery for NLS components based on RGPM. Firstly, current research primarily focuses on large public buildings, lacking attention to the spatial scale of landscape structures. Secondly, there is a lack of systematic integration based on technical research contents. Thirdly, there is a lack of specific technical application analysis combining actual design, leading to weaker practical guidance for industry practitioners. Therefore, this study selects the precise engineering construction information delivery of perforated panel walls in the space under the Sanya Bridge and the landscape platform of the Beijing Jinding Mountain as research cases. Through the analysis of construction information delivery content and technical challenges in these cases, the necessity of RGPM application is clarified. By analyzing the application of RGPM technology and its outcomes in these cases, concrete examples are provided for the precise construction information delivery of NLS components to fill the research gaps and provide theoretical foundations and application examples for future research.

Analysis and design of high-rise structures for wind resistance

With the rapid development of building level and construction technology, high-rise buildings have been adopted more and more, thus becoming an important place for people to work and live. Because of the high height of high-rise buildings, wind load becomes the main resultant force type of high-rise building. However, wind load has great randomness and unpredictability, which has great influence on the stability of high-rise building. This paper first analyses the main characteristics of wind load borne by tall buildings. Then, the common methods of wind-resistant design of high-rise building are summarized in detail. It also points out the existing problems and deficiencies in wind resistance design of high-rise buildings and the countermeasures and suggestions of wind resistance design of high-rise structures. Finally, according to the current research status and existing problems, the future development of wind resistance design is prospected. Results can provide some references for wind resistance design and research of high-rise buildings.

Thermo–Solid Coupling Analysis of Bionic Piston for a Mud Pump in Tunnel Engineering

With the development of mud shield tunnel construction technology, the demands on the working performance of a mud pump are becoming higher and higher. As one of the critical components of a mud pump that is easy to wear, the performance of the piston directly affects the operational efficiency and lifespan of the mud pump. The bionic shape of the piston was designed under the guidance of non-smooth surface characteristics of natural organisms to enhance friction and wear performance as well as longevity. The stress field and temperature field characteristics of the pistons with three bionic structures (pit, stripe, and prismatic) were analyzed based on finite element simulation. The stress field analysis results indicated that, for the prismatic shape and pit shape pistons, the maximum stress was concentrated in the lip regions, and both of them bore large stress at the root. For the stripe-shaped piston, the stress was dispersed on both sides of the stripe structure, the stress at the root was small, and the stress gradient along the axial direction was relatively gentle. The stripe-shaped bionic structure can significantly improve the stress distribution state on the piston surface, and the optimal stripe width was recommended to be between 1 and 1.5 mm. The temperature field analysis results indicated that, for the stripe-shaped piston, the surface temperature and heat flux were the smallest, and the temperature gradient was relatively smaller than that of pit-shaped and prismatic-shaped pistons, so it was easier to dissipate heat. When the stripe width was 1.5 mm, the temperature distribution was the most uniform, and the heat flux in localized areas was the smallest, so the heat generated by friction was relatively easy to discharge in the unit area.