| 基于监控量测的公路隧道二次衬砌受力分担比例 |
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| 引用本文： | 杨昌贤,崔光耀,王乐明.基于监控量测的公路隧道二次衬砌受力分担比例[J].世界地质,2012,31(1):193-198. |
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| 作者姓名： | 杨昌贤 崔光耀 王乐明 |
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| 作者单位： | 1. 铁道第三勘察设计院集团有限公司，天津300251; 2. 西南交通大学土木工程学院，成都610031 |
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| 摘 要： | 依托垫江至邻水高速公路铜锣山及明月山隧道，对公路隧道二次衬砌受力分担比例进行研究。通过围岩压力实测值与普氏理论、太沙基理论和公路隧道设计规范深埋围岩压力公式计算值进行对比，结果表明: Ⅲ级、Ⅳ级和Ⅴ级围岩压力计算值比较符合实测情况。通过对围岩压力、初期支护与二次衬砌的接触压力现场量测数据进行分析，得出Ⅲ级( 深埋) 、Ⅳ级( 深埋) 、Ⅴ级( 深埋) 和Ⅴ 级( 浅埋) 围岩二次衬砌受力分担比例分别为29. 20%、35. 28%、41. 38% 及32. 17%。研究成果对于公路隧道结构设计有着理论指导作用。
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| 关 键 词： | 公路隧道 监控量测 围岩压力 接触压力 二次衬砌 受力分担比例 |
Shared ratio of pressure in secondary lining based on field monitoring and measuring in highway tunnel |
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| YANG Chang-xian
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CUI Guang-yao
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WANG Le-ming.Shared ratio of pressure in secondary lining based on field monitoring and measuring in highway tunnel[J].World Geology,2012,31(1):193-198. |
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| Authors: | YANG Chang-xian CUI Guang-yao WANG Le-ming |
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| Institution: | 1. The Third Railway Survey and Design Institute Group Corporation，Tianjin 300251，China; 2. School of Civil Engineering，Southwest Jiaotong University，Chengdu 610031，China |
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| Abstract: | Based on Tongluoshan and Mingyueshan tunnels,the authors study the shared ratio of pressure in secondary lining of highway tunnel.Through the comparison by surrounding rock pressure measured values with calculated values of Pu＇s theory,Terzaghi theory and deep-buried surrounding rock pressure of highway tunnel design specification,the results show that calculated values of III-class,Ⅳ-class and V-class surrounding rock pressure are relatively in accordance with the practically measured values.By analyzing the field measured data of the surrounding rock pressure,and contact pressure between primary support and secondary lining,it can be concluded that the shared ratios of pressure in secondary lining of III-class（deep-buried）,Ⅳ-class（deep-buried）,V-class（deep-buried） and V-class surrounding rocks（shallow-buried） are 29.20%,35.28%,41.38% and 32.17%,respectively.This research plays a theoretical role in guiding the design of highway tunnel. |
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| Keywords: | highway tunnel monitoring and measuring surrounding rock pressure contact pressure secondary lining shared ratio of pressure |
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