| 近接桥桩暗挖隧道支护结构内力监测分析 |
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| 引用本文： | 张明聚,张文宇,杜修力.近接桥桩暗挖隧道支护结构内力监测分析[J].北京工业大学学报,2008,34(8). |
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| 作者姓名： | 张明聚 张文宇 杜修力 |
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| 作者单位： | 北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100022;北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100022;北京工业大学,城市与工程安全减灾省部共建教育部重点实验室,北京,100022 |
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| 基金项目： | 国家自然科学基金，北京市科技计划 |
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| 摘 要： | 针对北京地铁某车站暗挖隧道工程,制定了支护结构内力、围岩接触压力监测方案.通过现场监测,分析了施工过程中,在既有桥桩影响下,支护结构内力、围岩接触压力的变化特征,及时掌握了隧道变形、支撑内力的变化动态,并及时反馈,为判断隧道安全稳定提供了参考数据.测试结果表明,浅埋暗挖隧道支护结构的仰拱部位压力大;近接桥桩对隧道的变形产生了抑制作用,造成隧道断面变形的不对称性,围岩压力增大;桥桩的存在与否,造成隧道支护结构内力分布情况的不同.
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| 关 键 词： | 桥梁 桩基础 隧道 施工监测 信息反馈 |
Structure Internal Force Monitoring and Analysis for Subway Tunnels in the Function of Adjacent Bridge Pile |
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| ZHANG Ming-ju,ZHANG Wen-yu,DU Xiu-li.Structure Internal Force Monitoring and Analysis for Subway Tunnels in the Function of Adjacent Bridge Pile[J].Journal of Beijing Polytechnic University,2008,34(8). |
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| Authors: | ZHANG Ming-ju ZHANG Wen-yu DU Xiu-li |
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| Abstract: | A scheme for monitoring structural forces and pressures of the surrounding rock is drawn up for the shallow depth bored tunnel of a subway station in Beijing.According to the monitoring data,the change characteristics of structural forces and rock pressures during the construction are analyzed under the influence of bridge pile foundation.The trends of structural forces and rock pressure are under control,and the reference information is provided to judge the stability and safety of the tunnel by monitoring information feedbacks.There are several monitoring conclusions as follows:the invert of shallow depth bored tunnel has a high pressure;tunnel distortion produces dissymmetry in the function of adjacent bridge pile,as result the rock pressure increases a lot;and the structure internal force of tunnel is different under the influence of adjacent piles or not. |
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| Keywords: | bridge pile foundation tunnel construction monitoring information feedback |
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