Transportation Development In China Research Articles

Bridge BIM Dynamic Temperature Sensing Identification and Operation and Maintenance Technology

With the high-quality development of transportation in China, highway bridges, as the core part of transportation infrastructure, have received widespread attention for their safety and operation management. Especially in the field of super large bridges, due to their importance in transportation and enormous social benefits, safety and operation management are particularly crucial. This research focused on the operation and maintenance management of super large bridges, especially how to improve the efficiency and effectiveness of bridge operation and maintenance management through BIM (Building Information Modeling) technology. This technology deepened the understanding of bridge structure and performance by establishing a detailed BIM model. By standardizing model data and establishing coding systems, data interoperability and management efficiency were improved, providing decision support for the daily management and maintenance of bridges. According to experimental data, it can be concluded that the accuracy of basic information judgment, temperature and humidity accuracy, bridge status judgment accuracy, and operation and maintenance information accuracy of BIM dynamic temperature recognition and maintenance technology for bridges were among four sets of data. The accuracy rates of all four data items were between 91.20% and 94.27%, indicating a high accuracy rate. The comprehensive application of these technologies aims to improve the operation and maintenance management level of super large bridges, ensure their long-term stability and safety, and contribute to the sustainable development of transportation systems.

Evaluation of the energy-economic-environment potential of urban-scale photovoltaic bus parking lots: The case of Tianjin, China

Integrating urban bus parking lots with photovoltaics is an important solution to promote carbon neutrality and net zero emissions in transportation systems. Except for the research on the integration of photovoltaics with car parking lots and bus roofs, not much attention has been paid to photovoltaic bus parking lots so far. We develop a new methodology for evaluating the potential of urban-scale photovoltaic bus parking lots. We use Google Earth, Baidu Panorama Map, Grasshopper, UAV, and PVSYST to evaluate the electrical generation potential of the bus parking lots integrated with photovoltaics in the central urban area of Tianjin. Considering the actual driving conditions of buses, the operating income and expenditure, and lifecycle energy demand, we evaluate the charging potential, economic feasibility, and environmental benefits of photovoltaic bus parking lots. The results show that the electrical generation of photovoltaic bus parking lot in the first year is 53971.96 MWh, which can meet the normal operation of 50% electric buses. When the self-use ratio of photovoltaic bus parking lot electrical generation is 40%, 80% and 100%, the system will reach the balance of payments in the 6.21st, 4.79th and 4.31st year respectively. The energy payback time of the photovoltaic bus parking system is 4.00 years. Our research demonstrates that photovoltaic bus parking lots have significant potential as one of the strategies for low-carbon and green transportation development in China. We also discuss policy measures that can promote their large-scale application. Finally, the method proposed in this study can help evaluate and understand the feasibility of charging electric buses by integrating photovoltaics in bus parking lots covering large-scale urban areas, thereby supporting decision-making and better planning of PV-integrated bus parking lot.

Experimental investigation of temperature effects on the physical and mechanical properties of red sandstone

With the rapid development of transportation in China, the number of tunnels is also increasing. However, tunnels may be affected by fire accidents during operation, and the surrounding rock will be irreparably damaged by high temperature. To investigate the influence of temperature on the physical and mechanical properties of red sandstone, physical properties were determined and the Brazilian splitting test was conducted on red sandstone after thermal treatment from 25 to 600°C. The results show that with increasing temperature, the apparent colour of the red sandstone gradually deepened. The P-wave velocity and Leeb hardness decreased with increasing temperature, and a typical temperature threshold (300°C) was identified. The tensile strength of red sandstone decreased quickly from 25 to 300°C and then decreased slowly from 300 to 600°C. The acoustic emission (AE) signal shows a high degree of consistency with the stress–time curve. As the temperature increased, the AE became more active, and when red sandstone was near failure, the AE signal increased sharply. The failure mode of sandstone mainly consists of a throughgoing main crack and a secondary crack, and the crack width also grows gradually. Moreover, we observe from polarized light microscopy images that the number of fractures in the sandstone also increases as the temperature rises. The variation of physical and mechanical properties of red sandstone is closely related to microstructure. These findings demonstrate that temperature has an obvious weakening effect on the physical and mechanical properties of sandstone, and provide theoretical guidance and significant engineering information for tunnel fire restoration. Thematic collection: This article is part of the Engineering Geology and Hydrogeology of the Anthropocene collection available at: https://www.lyellcollection.org/topic/collections/engineering-geology-and-hydrogeology-of-the-anthropocene

Measurement Method of Comprehensive Transportation Development Quality Based on Transportation Efficiency

Transportation is the forerunner of economic and social development. Therefore, the high-quality development of comprehensive transportation is of great significance to ensure overall economic and social progress and the smooth implementation of major national strategies. The essence of high-quality development in transportation is to realize the optimal allocation of transportation resources. This study handles two aspects. First, the factors that reflect the quality of comprehensive transportation development are defined and analyzed, and an evaluation system is proposed to build China’s comprehensive transportation development quality with transportation efficiency as the core is proposed, taking into account transportation infrastructure and transportation scale. Second, the static comprehensive evaluation value is calculated by the entropy weight method, and then the incentive control model is constructed by introducing incentive factors to achieve a dynamic comprehensive evaluation of comprehensive transportation development. The research results not only propose new indicators but also evaluate different modes of transportation within the same dimension. The results show that the quality of comprehensive transportation development in China is generally on the rise, but there are obvious regional differences. The proposed model is derived from evaluation cases in transportation-related fields and has not yet been applied in the transportation field. It can help understand the development status of the industry and assist in policy formulation.

Assessing freight structure and its effect on transport CO2 emissions: heterogeneous and mediating effect analysis.

Understanding the effect of freight structure (FS) on carbon dioxide (CO2) emissions is significant for policymakers in the transport sector. However, few studies have investigated fully how the freight structure influences transport CO2 emissions. In the paper, a comprehensive freight structure index is proposed to assess the freight structure in 16 provinces of China during 2005-2019. Then, the heterogeneous effect of the freight structure and other factors on CO2 emissions are quantified by the quantile regression model developed. The mediating effect between freight structure and CO2 emissions is further examined. And the panel causality test is used to explore the directions of causality among variables. The main results indicate that (1) the level of freight structure shows a distribution of increase from western and central regions to eastern regions in 16 provinces. (2) Freight structure has a positive effect on transport CO2 emissions, and its effect is significantly heterogeneous in all quantiles. (3) Freight structure has an indirect impact on CO2 emissions through the scale effect. (4) The bidirectional causality is confirmed between economic growth, industrial structure, and information and communication technology with carbon emissions. A unidirectional causality from CO2 emissions to freight structure is also found. Finally, some policy recommendations are proposed for sustainable transport development in China. The results facilitate the formulation of the regionally tailored carbon emission reduction strategy in the transport sector.

Evaluation of green transportation development based on pressure-state-response model

In order to promote the green and low-carbon development of transportation in China and provide scientific guidance for green transportation construction, this paper adopts the pressure-state-response theory to construct a PSR model applicable to the development of urban green transportation system, and uses the statistical data of Tianjin, China, and assigns weights to each index with the help of entropy value method, which reasonably and accurately reflects the importance of evaluation indexes. And provides some suggestions for Tianjin transportation development.

Using energy consumption constraints to control the freight transportation structure in China (2021–2030)

China has formulated a series of energy-saving policies to combat climate change, including energy consumption limit to 6 billion tonnes of standard coal by 2030, thus controlling the energy consumption of freight transportation is crucial for achieving energy-saving goals. In this study, the annual control model for freight transportation structure adjustment (FTSA-AC model) was established from the perspectives of the target year prediction and intermediate year controlling to control energy consumption in the freight sector. Innovatively, an efficient algorithm was designed to solve the model and obtain the annual control plan of freight transportation structure adjustment in China (2021–2030). Accordingly, the national freight transportation structure will be continuously adjusted to the optimal state until 2027, and the freight turnover will be achieved at a steady growth rate of 1.50% from 2027 to 2030. The freight turnover will reach 22888.040 billion tonne-kilometres by 2030, in which railways, highways, waterways, and aviation would account for 18.92%, 30.20%, 50.76%, and 0.12%, respectively. According to the results, freight energy consumption will reach its peak in 2029, with 145 million tonnes of standard coal. Lastly, a series of reasonable policy recommendations were presented to provide a reference for energy-efficient freight transport development in China.

An analysis of coupling coordination relationship between regional economy and transportation: empirical evidence from China.

The increasing discrepancy between a regional economy and transportation imposes higher requirements for their coordinated development. This paper utilized the coupling coordination degree (CCD) model and entropy method (EM) to quantitatively study the coupling coordination state between regional economy and transportation and its spatial distribution of 30 provinces in China from 2004 to 2017. The results show the following: (1) The comprehensive level of regional economy and transportation development in China has shown a growing trend, and the development of regional economy is faster than that of the transportation. (2) The CCD between regional economy and transportation in China is changing from incoordination to high-level coordination. The imbalance of CCD levels among the regions studied varies significantly. The CCD in the eastern regions is slightly higher than that in the central, western, and northeast regions. (3) In the region with a higher CCD, the discrepancy between the development of regional economy and transportation is higher than that in other regions. Moreover, suggestions are provided to promote the coordinated development from a regional perspective. This study provides references to policymakers to help them properly plan and design transportation systems while considering the regional economy, thus stimulating the coordinated and sustainable development between regional economy and transportation.

Design of Special-shaped Interchange between Expressway and Urban Road in Mountainous Cities

Driven by the rapid economic development, the development of transportation in China has begun to move towards mountainous areas. The climate environment, topography and landform of mountainous cities are different from those of plain areas. In mountainous cities, the area of opposite interchanges between expressways and urban roads is generally large, which has a certain contradiction with the topographic conditions of mountainous cities. Therefore, it is necessary to reasonably design the opposite interchanges between expressways and urban roads in mountainous cities. The author explores and analyzes the factors restricting the special-shaped interchange between expressway and urban road in mountainous cities and the main forms of special-shaped interchange, and puts forward a reasonable design scheme, hoping to make a smooth development of the special-shaped interchange in mountainous cities.

Research on Multimodal Transport Development in China under the Background of Internet Plus

By brief introduction of the importance of multimodal transport, which has been paid great attention by Chinese government, this paper reviews the literature and sums up the present situation of China`s multimodal transport. Then, the evolutionary background ofinternet plus logistics in China has been summarized, and the influence on intermodal transport has been analysed. By critically analysing the problems, this paper finally gives some suggestions to solve problems from hardware side and software side.

Countermeasures and suggestions regarding the development of low carbon transport

The transport industry is the main sector of China’s energy consumption, while the urban transport is the main way of China’s carbon emissions. Therefore, the development of low carbon transport is not only the significant way to mitigate greenhouse gas emissions, but also the inevitable trend for future development of transport industry. This paper introduces the present status and fundamental connotation, characteristics and implementation path of low carbon transport. On such basis, this paper illustrates the international experiences of low carbon transport, and analyzes the main problems existing in the development of urban low carbon transport in China. This paper also provides the countermeasures and suggestions regarding the development of low carbon transport in China.

Exploration of Sustainable Urban Transportation Development in China through the Forecast of Private Vehicle Ownership

With the acceleration of China’s urbanization process, the urban transportation problem has become increasingly serious. The rapid expansion of private vehicle ownership, in particular, has become one of the barriers to the realization of sustainable urban transition. This paper applied the Gompertz model to analyze the non-linear relationship between private vehicle ownership and per capita GDP in China using provincial data. In addition, we forecasted private vehicle ownership for 31 Chinese provinces for the period of 2019–2030 and predicted the time to reach the upper limit of 1000 people vehicle ownership of each province according to different scenarios. The main findings revealed that the number of private vehicles owned in China’s provinces was in line with “S”-shaped development and was currently in the process of accelerated growth. Under the scenario of an annual per capita GDP growth rate of 6%, China’s private vehicle ownership will reach 246 million, 375 million, and 475 million in 2020, 2025, and 2030, respectively. This indicates that China’s expansion of private vehicle ownership will generate significant challenges, such as on-road vehicle-related fossil fuel consumption, pollutant emissions, traffic congestion, and scrapped vehicle recycling. These issues will become increasingly prominent. In provinces such as Hubei, Hebei, Hunan, and other central provinces that have a 50–60% urbanization rate, the large potential for income promotion will significantly stimulate the increase in private vehicle ownership, and the upper limit of 1000 people vehicle ownership in each province will be reached in 2032, 2037, and 2046 with annual per capita GDP growth rates of 8%, 6%, and 4%, respectively.

Architecture Design of China National Urban Transit Database

Transport policy making process of national and local governments should be supported by a comprehensive database to ensure sustainable and healthy development of urban public transport. China National Urban Transit Database (CNUTD) has been built to play such a role. This paper is to make an introduction of CNUTD framework including different user’s demands, sustainable data exchange mechanism from different level and application modules. Considering the urban transport development features of Chinese cities, sustainable urban transport development indicators are proposed to evaluate public transport service level in Chinese cities. The application of CNUTD in monitoring sustainable transport development in China is introduced in this paper as well.

Research on the Construction of Intelligent Transportation System Based on Internet of Things

At present, with the development of economy, people's living standards are getting higher and higher. Based on the current big city traffic congestion phenomenon, by introducing the concept of Internet and related technologies, the five layers of building based on Internet of things a subject three division wisdom metropolitan transportation system architecture, this architecture includes homework layer, perception layer, network layer, application layer and user layer, a main body is a big city traffic database is the core of the information transmission, three departments include traffic police supervision department, city management and cost management departments. Through this framework, the whole process of urban traffic information can be controlled in real time, so as to guarantee the demand of urban consumers and residents and promote the stable and healthy development of transportation in China's big cities. This paper USES the knowledge of Internet of things to build the intelligent transportation system of big cities, hoping to get inspiration from it.

Evaluation of traffic development in China's provinces based on principal component analysis

With the rapid development of China’s transportation industry, China’s transportation industry has also exposed a lot of problems. In this paper, aiming at the unbalanced development of transportation in China’s provinces, a comprehensive evaluation model of transportation development in China’s provinces is established by using the concepts and methods of principal component analysis, and the deficiencies and causes of traffic development in different provinces are analyzed in detail. Finally, the corresponding policy suggestions are put forward in view of the problems exposed.

The decoupling states of CO2 emissions in the Chinese transport sector from 1994 to 2012: A perspective on fuel types

This paper analyzes the decoupling states between CO2 emissions and transport development in China from 1994 to 2012. The results indicate that, at the aggregate level, the Chinese transport sector is far from reaching the decoupling state. Negative decoupling or non-decoupling years account for 72.2% of the study period. At the disaggregated level, the decoupling states between CO2 emissions and eight primary fuels are as follows: raw coal and coke are in the absolute decoupling state; crude oil, gasoline and diesel are in the weak negative state; and the other three types (kerosene, heavy fuel oil, and natural gas) are in the strong negative decoupling state. Policy implications underneath the identified decoupling states are also revealed to help China build a more sustainable transportation system.

Research on the Correlation between Typical National Urbanization Development and Transportation and its Enlightenment to China

To promote the new urbanization development, this paper utilizes the coordination theory and transport economic theory to select some typical countries, including United States, Japan, Britain, and South Korea, to analyze the correlation between their urbanization development stage and the evolution of their main transportation modes; on the other hand, it studies the mutual support between the urbanization development and the spatial variation of transport network. The above results are then used to make a comparison with the actual situation of China urbanization development. Therefore, this paper presents some new ideas for the transportation development in China’s urbanization process from two aspects, the development stage and the development focus, aiming to guide a healthy urbanization and achieve the sustainable development.

Research on Development Strategies of China Urban Public Transport

Firstly,this research report analyze the environment of China urban public transport development and problems of urban transport development, based on showing urban public transport development in China in recent years,reflecting the characteristics of urban public transport development level;Thirdly,the Chinese Government taken the important initiatives in traffic congestion and the urban public transport development;And get the urban public transportation development strategy under the new situation.This report covers bus and trolleybus, urban rail transit and urban public transport areas.This research report provides information of China Public Tansport development to public, supports urban transit policy-making process and the administration for the industry, as well as research purpose and enterprise development.

Research on assessment methods for urban public transport development in China.

In recent years, with the rapid increase in urban population, the urban travel demands in Chinese cities have been increasing dramatically. As a result, developing comprehensive urban transport systems becomes an inevitable choice to meet the growing urban travel demands. In urban transport systems, public transport plays the leading role to promote sustainable urban development. This paper aims to establish an assessment index system for the development level of urban public transport consisting of a target layer, a criterion layer, and an index layer. Review on existing literature shows that methods used in evaluating urban public transport structure are dominantly qualitative. To overcome this shortcoming, fuzzy mathematics method is used for describing qualitative issues quantitatively, and AHP (analytic hierarchy process) is used to quantify expert's subjective judgment. The assessment model is established based on the fuzzy AHP. The weight of each index is determined through the AHP and the degree of membership of each index through the fuzzy assessment method to obtain the fuzzy synthetic assessment matrix. Finally, a case study is conducted to verify the rationality and practicability of the assessment system and the proposed assessment method.

Study on the Model of Integrated Urban Rail Transit Hub Transfer Site Layout

Because of the special circumstances of transport development in China. This making the urban railway,suburban railway and other urban rail transportation in different ways in the operation, management and investors. This leads to urban rail transit between various modes of transport not reasonably coordinated and effective convergence, not only a waste of the countrys limited transport resources passenger travel back to a lot of inconvenience. Thus the author proposes to build urban rail transportation system integration hub transfer mode, in this mode, multi-stop not only help reduce the total time which visitors gather consumption, shorten the travel time, but also can ease urban traffic (especially the urban ground transportation) pressure. Meanwhile the author in this mode to establish a multi-objective optimization mode for integrated urban rail transit site layout, which is to minimize the total time consumption and the largest city in the railway passenger hub sharing rate of target.