Probabilistic analysis of crown settlement in high-speed railway tunnel constructed by sequential excavation method considering soil spatial variability

Zhang, Houle; Luo, Fa; Yang, Sharon S.; Wu, Yongxin

doi:10.1016/j.tust.2023.105342

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…(2016) analyzed the monitoring data of the subway foundation pit and constructed an evaluation model combining the analytic hierarchy process (AHP) and fuzzy comprehensive evaluation to determine the risk evaluation level of the foundation pit construction. Zhang et al. (2021) used the GM (1,1) algorithm to analyze the existing high-speed railway subgrade settlement data.…”

Section: Literature Reviewmentioning

confidence: 99%

Research on the construction safety risk assessment of prefabricated subway stations in China

Luo

Guo

Han

et al. 2022

ECAM

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PurposePrefabricated technology is gradually being applied to the construction of subway stations due to its characteristic of mechanization. However, the prefabricated subway station in China is in the initial stage of development, which is prone to construction safety issues. This study aims to evaluate the construction safety risks of prefabricated subway stations in China and formulate corresponding countermeasures to ensure construction safety.Design/methodology/approachA construction safety risk evaluation index system for the prefabricated subway station was established through literature research and the Delphi method. Furthermore, based on the structure entropy weight method, matter-element theory and evidence theory, a hybrid evaluation model is developed to evaluate the construction safety risks of prefabricated subway stations. The basic probability assignment (BPA) function is obtained using the matter-element theory, the index weight is calculated using the structure entropy weight method to modify the BPA function and the risk evaluation level is determined using the evidence theory. Finally, the reliability and applicability of the evaluation model are verified with a case study of a prefabricated subway station project in China.FindingsThe results indicate that the level of construction safety risks in the prefabricated subway station project is relatively low. Man risk, machine risk and method risk are the key factors affecting the overall risk of the project. The evaluation results of the first-level indexes are discussed, and targeted countermeasures are proposed. Therefore, management personnel can deeply understand the construction safety risks of prefabricated subway stations.Originality/valueThis research fills the research gap in the field of construction safety risk assessment of prefabricated subway stations. The methods for construction safety risk assessment are summarized to establish a reliable hybrid evaluation model, laying the foundation for future research. Moreover, the construction safety risk evaluation index system for prefabricated subway stations is proposed, which can be adopted to guide construction safety management.

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Section: Literature Reviewmentioning

confidence: 99%