The opening conditions of the metro and its early characteristics: A historical perspective

Chen, Zhilong; He, Qiaoyi; Su, Xiaochao; Yuan, Yuan; Chen, Song

doi:10.1016/j.tust.2020.103732

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…Population and income have always been key factors that need to be considered for metro construction (Chen et al 2021b ) and metro recovery (Chen et al 2020 ). Therefore, Chongqing should improve urban socioeconomic development following relevant policy documents to achieve the sustainable development of metro and even urban systems such as the implementation of strategic emerging industrial cluster, development of modern mountain-based high-efficiency agriculture, construction of 5G essential networks, the establishment of talent team, improvement of public emergency ability, etc.…”

Section: Discussionmentioning

confidence: 99%

Resilience assessment of metro stations against rainstorm disaster based on cloud model: a case study in Chongqing, China

et al. 2022

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Extremely heavy rainfall has posed a significant hazard to urban growth as the most common and disaster-prone natural calamity. Due to its unique geographical location, the metro system is more vulnerable to waterlogging caused by rainstorm disaster. Research on resilience to natural disasters has attracted extensive attention in recent years. However, few studies have focused on the resilience of the metro system against rainstorms. Therefore, this paper aims to develop an assessment model for evaluating metro stations’ resilience levels. Twenty factors are carried out from dimensions of resistance, recovery and adaptation. The methods of ordered binary comparison, entropy weight and cloud model are proposed to build the assessment model. Then, taking Chongqing metro system in china as a case study, the resilience level of 13 metro stations is calculated. Radar charts from dimensions of resistance, recovery, and adaptation are created to propose recommendations for improving metro stations’ resilience against rainstorms, providing a reference for the sustainable development of the metro system. The case study of the Chongqing metro system in china demonstrates that the assessment model can effectively evaluate the resilience level of metro stations and can be used in other infrastructures under natural disasters for resilience assessment.

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Section: Discussionmentioning

confidence: 99%

Resilience assessment of metro stations against rainstorm disaster based on cloud model: a case study in Chongqing, China

et al. 2022

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“…Similarly, the demand for the metro system means the number of metros to adapt to the conditions currently, even in the future. After collecting and consolidating the literatures of factors affecting metro system demand [ 3 , 4 , 14 , 15 , 16 , 31 ], four dimensions, including satisfaction of people’s going out (D1), improvement of urban environmental conditions (D2), improvement of urban traffic conditions (D3), and perfection of the development of metro (D4), are proposed to reflect the level of the demand for the metro system. Among them, the satisfaction of people’s going out mainly considers the amount and the density of population because a higher amount or density will lead to the possibility that more metro systems are needed to accommodate the passengers.…”

Section: Construction Of the Metro Development Conditions Comprehensive Evaluation Indicator Systemmentioning

confidence: 99%

“…Similarly, the supply of the metro system can be defined as the services and goods that the local government or city can provide. Through considering the relevant references [ 3 , 4 , 14 , 15 , 16 , 31 ], three dimensions, including finance (S1), manpower (S2), and land (S3), are proposed to reflect the level of supply for the metro system. Finance (S1) and manpower (S2) represent the expense and workers that the government can afford or offer in the construction and operation of the metro system.…”

Section: Construction Of the Metro Development Conditions Comprehensive Evaluation Indicator Systemmentioning

confidence: 99%

Sustainable Development of Urban Metro System: Perspective of Coordination between Supply and Demand

Zhu

Jiao

Zhang

et al. 2021

IJERPH

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Metro systems are gradually becoming more and more crucial in promoting the economy and society in cities. However, various challenges such as financial resources and the efficiency of utilizing these metro plans bring difficulties for metro construction. Hence, accurately evaluating the urban metro system’s development condition seems significant for the sustainable development of the urban metro system. Therefore, a comprehensive evaluation indicator system of metro development conditions containing 25 indicators from dimensions of demand and supply is established in this study, and a coupling coordination degree model combined with the entropy weight method and Technique for Order Preference by Similarity to an Ideal Solution (TOPSIS) method is proposed to analyze the level of metro development conditions and coupling coordination conditions of 35 cities in China. According to the calculation results, 35 cities are divided into six categories, and radar charts are constructed to promote the sustainable development of the metro system.

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“…With the increase in population, economic growth, social progress, fast urban development, and increasingly severe urban traffic, simply increasing and widening roads and urban interchanges not only cannot solve the problem but also becomes a competition for land with other environmental issues of resources. Referring to the construction experience of other cities, a large number of urban overpasses have brought various disadvantages, resulting in increasingly severe environmental problems such as noise and dust [1,2]. The development of underground space resources and the development of the subway transportation industry have become the necessary means for the development of a metropolis [3,4].…”

Section: Introductionmentioning

confidence: 99%

Additional Stress of Soil and Surface Settlement during Tunnel Shield Construction

Bian

Peng

et al. 2023

Buildings

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To study the influence of shield excavation on the surrounding soil, and to control the influence of the shield excavation of the subway tunnel on the surface settlement and the deformation of the surrounding buildings, it is necessary to study the additional stress of the surrounding soil caused by the tunnel shield excavation and the law of surface settlement. Combined with a shield construction project of a subway tunnel, this article uses the Mindlin solution in elastic mechanics to obtain three-dimensional calculation formulas for the additional thrust on the shield cutter head surface and the additional stress and displacement field caused by the friction force between the shield shell and the soil contact interface on the surrounding soil. The Loganathan ground movement pattern is used to determine the soil movement mode. The source–sink method is used to study the formula for calculating the three-dimensional additional stress of the soil around the shield tunnel caused by ground loss. The results show that when the shield is digging, the ground goes through five stages, namely the uplift of the ground before the arrival of the shield cutter head, surface settlement when the shield reaches the surface subsides when the shield tail of the shield passes through, the passage of the shield tail of the shield, surface settlement when the lining is separated from the shield, and consolidation and settlement after the shield passes through.

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The opening conditions of the metro and its early characteristics: A historical perspective

Cited by 6 publications

References 19 publications

Resilience assessment of metro stations against rainstorm disaster based on cloud model: a case study in Chongqing, China

Resilience assessment of metro stations against rainstorm disaster based on cloud model: a case study in Chongqing, China

Sustainable Development of Urban Metro System: Perspective of Coordination between Supply and Demand

Additional Stress of Soil and Surface Settlement during Tunnel Shield Construction

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