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| 小净距隧道开挖空间效应分析 | |
| 引用本文： | 李树鹏,葛大勇,黄强.小净距隧道开挖空间效应分析[J].交通科技,2011(1):47-50. |
| 作者姓名： | 李树鹏 葛大勇 黄强 |
| 作者单位： | 1. 中铁第四勘察设计院集团有限公司,武汉,430063 2. 武汉铁四院工程咨询有限公司,武汉,430063 3. 洛阳理工学院土木工程系,洛阳,471003;武汉理工大学交通学院,武汉,430063 |
| 摘 要： | 依托某隧道的设计及施工,建立小净距隧道的三维计算模型,对小净距隧道IV级围岩段台阶法开挖进行数值模拟计算,对其开挖过程中位移场、应力场、喷射混凝土初期支护随空间变化规律进行分析,结果表明:小净距隧道施工过程中存在先行洞和后行洞相互扰动的现象,量测断面的位移主要产生于隧道开挖至量测断面及通过后;边拱和仰拱所受弯矩大,在拱腰位置出现较大的正负弯矩容易造成初期支护混凝土开裂。 |
| 关 键 词： | 小净距 数值模拟 隧道施工 台阶法 |
Analysis of Space Effect in Neighborhood Tunnel Excavation |
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| Li Shupeng,Ge Dayong,Huang Qiang.Analysis of Space Effect in Neighborhood Tunnel Excavation[J].Transportation Science & Technology,2011(1):47-50. | |
| Authors: | Li Shupeng Ge Dayong Huang Qiang |
| Institution: | Li Shupeng1,Ge Dayong2,Huang Qiang3,4(1.China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China,2.Wuhan Tiesiyuan Englneering Consulting Corporation Ltd.,Wuhan 43063,3.Dept.of Civil Engineering,Luoyang Institute of Technology,Luoyang 471003,4.School of Transportation,Wuhan University of Technology,China) |
| Abstract: | Based on the design and construction of a tunnel,a three-dimensional calculation model of neighborhood tunnel is established,the numerical simulation of bench excavation method is done,and the displacement,stress field,initial support variation in excavation process is analyzed.The results showed that: the antecedence tunnel and posterior tunnel disturbs each other,the main displacement of measuring section is created at and after excavating;the moment of side arch and invert arch is great,and the moment in... |
| Keywords: | small spacing numerical simulation tunnel construction bench method |
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