Block Division Scheme for Prefabricated Secondary
Lining in&nbsp;Railway
Tunnel Based on Analytic Hierarchy Process

LI Pengfei, LI Kangning, ZHAO Xiaoyong, ZHAO Yong, LIU Jianyou

doi:10.3973/j.issn.2096-4498.2021.S2.011

Tunnel Construction >

2021 , Vol. 41 >Issue S2: 92 - 99

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.S2.011

Block Division Scheme for Prefabricated Secondary Lining in Railway Tunnel Based on Analytic Hierarchy Process

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(1. Key Lab of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China; 2. China Railway First Survey and Design Institute Group Co., Ltd., Xi′an 710043, Shaanxi, China; 3. Tibet Railway Co.， Ltd.， Lhasa 850030， Tibet， China; 4. Railway Engineering Consulting Group Co., Ltd., Beijing 100055, China)

Online published: 2022-03-14

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Abstract

To investigate the evaluation system for the decisionmaking of the prefabricated secondary lining block division scheme, the block scheme of the prefabricated secondary lining of deepburied doubletrack railway tunnel in grade V surrounding rock is studied based on the basic principle of analytic hierarchy process and the analysis results of finite element software. The optimal block scheme No. 3, which is on the basis of the zero bending moment point and whose block weight is more even, is obtained. In the total order of hierarchy, the factor with the largest weight is the minimum safety factor, followed by the maximum crown deformation, the number of section joints, the maximum weight of single segment, and the number of segment component types. Therefore, when selecting the block division scheme of tunnel prefabricated secondary lining, the structural safety and reliability are the priorities while considering other factors.

Key words： railway tunnel; prefabricated lining; block division scheme; analytic hierarchy process; numerical analysis

Cite this article

LI Pengfei, LI Kangning, ZHAO Xiaoyong, ZHAO Yong, LIU Jianyou .

Block Division Scheme for Prefabricated Secondary Lining in Railway Tunnel Based on Analytic Hierarchy Process

[J]. Tunnel Construction, 2021 , 41(S2) : 92 -99 . DOI: 10.3973/j.issn.2096-4498.2021.S2.011

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