复合式衬砌初期支护刚度及影响因素分析

李春清; 梁庆国; 吴旭阳; 孙凯

doi:10.3973/j.issn.1672-741X.2014.08.008

隧道建设 >

2014 , Vol. 34 >Issue 8: 754 - 759

DOI: https://doi.org/10.3973/j.issn.1672-741X.2014.08.008

研究与探索

复合式衬砌初期支护刚度及影响因素分析

李春清 ,
梁庆国 ,
吴旭阳 ,
孙凯

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（1.甘肃省道路桥梁与地下工程重点实验室，甘肃兰州 730070； 2.兰州交通大学土木工程学院， 甘肃兰州 730070； 3.中铁二局集团有限公司，四川成都 610031）

李春清(1987—)，男，甘肃永靖人，兰州交通大学，岩土工程专业，在读硕士，主要从事岩土与地下工程研究。

收稿日期: 2014-05-23

修回日期: 2014-07-11

网络出版日期: 2014-08-21

基金资助

国家自然科学基金（41262010）；长江学者和创新团队发展计划（IRT1139）；兰州交通大学“青蓝”人才工程项目（QL-08-19A）

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Analysis on Rigidity of Primary Support of Composite Lining and Its Influencing Factors

LI Chunqing ,
LIANG Qingguo ,
WU Xuyang ,
SUN Kai

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(1. Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province, Lanzhou 730070, Gansu, China; 2. College of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China; 3. The Second Engineering Group Co., Ltd., of China Railway Erju Co., Ltd., Chengdu 610031, Sichuan, China)

Received date: 2014-05-23

Revised date: 2014-07-11

Online published: 2014-08-21

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摘要

针对正在建设的宝兰客运专线出现的大量超大断面黄土隧道，介绍了客运专线中黄土隧道的初期支护结构设计研究情况，对于隧道初期支护弹性模量的取法问题，采用折算法和模拟法分别计算隧道初期支护的等效弹性模量，通过对2种计算结果进行对比，结合围岩压力监测资料，分析了初期支护弹性模量的取值及初期支护压力。研究结果表明：运用模拟法计算的初期支护等效弹性模量更贴切，对今后类似工程的设计与施工具有一定参考价值。

关键词： 黄土隧道; 复合式衬砌; 初期支护; 弹性模量; 喷射混凝土; 支护压力

本文引用格式

李春清 , 梁庆国 , 吴旭阳 , 孙凯 . 复合式衬砌初期支护刚度及影响因素分析[J]. 隧道建设, 2014 , 34(8) : 754 -759 . DOI: 10.3973/j.issn.1672-741X.2014.08.008

Abstract

There are a lot of superlarge crosssection loess tunnels on BaojiLanzhou passengerdedicated railway. In this article, thestateoftheart of studies on the design of the primary support of loess tunnels on passengerdedicated railways is presented, the equivalent elastic modulus of the primary support of the tunnels is calculated by means of conversion method and simulation method, comparison and contrast is made between the calculation results obtained by these two calculation methods, the value of the elastic modulus of the primary support and the pressure of the primary support are analyzed on basis of the monitoring data of the rock mass pressure. The study results show that the equivalent elastic modulus of the primary support calculated by simulation method is more accurate. The paper can provide reference for the design and construction of similar projects in the future.

Key words： loess tunnel; composite lining; primary support; elastic modulus; shotcrete; support pressure

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