Design Method for Support Structure of Large Crosssection Tunnels in Hubei on ZhengzhouWanzhou
Railway Constructed by Mechanized Means

童建军; 刘大刚; 张霄; 王志龙; 赵思光; 李佳旺

doi:10.3973/j.issn.2096-4498.2021.01.013

2021 , Vol. 41 >Issue 1: 116 - 125

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.01.013

Design Method for Support Structure of Large Crosssection Tunnels in Hubei on ZhengzhouWanzhou Railway Constructed by Mechanized Means

童建军 ,
刘大刚 ,
张霄 ,
王志龙 ,
赵思光 ,
李佳旺

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（1. Key Laboratory of Transportation Tunnel Engineering， Ministry of Education， Southwest Jiaotong University, Chengdu 610031， Sichuan， China； 2. School of Civil Engineering， Southwest Jiaotong University, Chengdu 610031， Sichuan， China）

Online published: 2021-02-08

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Abstract

In order to establish a support structure design method suitable for mechanized construction of large crosssection tunnels, the calculation equation of the stability coefficient of the tunnel face considering three kinds of advance support measures (advance pipe roofing, face bolting and pregrouting) is deduced based on the limit equilibrium method. Then, the calculation equations of the overall displacement pressure and the local displacement pressure are derived based on the multiple nonlinear regression analysis method, the BQ system and a large number of field test data of displacement pressure of deepcovered tunnels. Later, according to the support structure design method established, the advance support and primary support parameters of tunnels on ZhengzhouWanzhou highspeed railway are presented, and the rationality of the parameters and the practicability of the proposed method are proved by practical application.

Key words： highspeed railway tunnel; large crosssection tunnel; mechanized construction; support structure design; tunnel face stability; deformation pressure

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童建军 , 刘大刚 , 张霄 , 王志龙 , 赵思光 , 李佳旺 . Design Method for Support Structure of Large Crosssection Tunnels in Hubei on ZhengzhouWanzhou Railway Constructed by Mechanized Means[J]. Tunnel Construction, 2021 , 41(1) : 116 -125 . DOI: 10.3973/j.issn.2096-4498.2021.01.013

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