| 基于温度效应的隧道二次衬砌混凝土结构力学状态分析 |
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| 引用本文： | 罗彦斌,陈建勋,乔雄,王梦恕.基于温度效应的隧道二次衬砌混凝土结构力学状态分析[J].中国公路学报,2010(2). |
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| 作者姓名： | 罗彦斌 陈建勋 乔雄 王梦恕 |
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| 作者单位： | 北京交通大学土木建筑工程学院;长安大学桥梁与隧道陕西省重点实验室;兰州理工大学土木工程学院; |
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| 基金项目： | 国家西部交通建设科技项目(200731881267); 教育部新世纪优秀人才支持计划项目(NCET-07-0118) |
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| 摘 要： | 为了研究寒冷地区隧道二次衬砌混凝土结构在环境温度变化情况下的力学状态,基于振弦式混凝土应变计的测试原理,提出温差引起的误差修正公式,并采用数值模拟的方法,对隧道二次衬砌混凝土的温度应力进行了分析。结合陕西省吴堡至子洲段高速公路刘家坪3号隧道现场二次衬砌混凝土应变监测数据,研究了1年内环境温度变化情况下隧道二次衬砌混凝土的结构受力。结果表明:在温度的影响下,混凝土内部在冬季产生了比较大的拉应力,混凝土内侧拱顶产生压应力,其余部位内侧产生拉应力;混凝土外侧拱顶和边墙部位产生了比较大的拉应力,最大值出现在拱顶部位;混凝土的内外侧应力最大值为1.01 MPa,接近C25混凝土的设计抗拉强度1.33 MPa。
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| 关 键 词： | 隧道工程 二次衬砌 数值模拟 温度应力 振弦式应变计 |
Mechanics State Analysis of Secondary Lining Concrete Structure on Tunnel Based on Temperature Effect |
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| LUO Yan-bin,CHEN Jian-xun,QIAO Xiong,WANG Meng-shu.Mechanics State Analysis of Secondary Lining Concrete Structure on Tunnel Based on Temperature Effect[J].China Journal of Highway and Transport,2010(2). |
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| Authors: | LUO Yan-bin CHEN Jian-xun QIAO Xiong WANG Meng-shu |
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| Institution: | LUO Yan-bin1,CHEN Jian-xun1,2,QIAO Xiong2,3,WANG Meng-shu1 (1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2.Key Laboratory for Bridge , Tunnel of Shaanxi Province,Chang\'an University,Xi\'an 710064,Shaanxi,3.School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China) |
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| Abstract: | In order to study the mechanics state of secondary lining concrete structure on tunnel by ambient temperature changing in cold regions,based on test principle of the vibrational chord strain gauge,amended formula of test error caused by temperature changing was made,and the temperature stresses of secondary lining concrete on tunnel were analyzed by the methods of numerical simulation.Relied on the in-situ monitoring of secondary lining concrete strain on tunnel in Liujiaping No.3 Tunnel in Wubu-Zizhou Expr... |
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| Keywords: | tunnel engineering secondary lining numerical simulation temperature stress vibrational chord strain gauge |
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