| 地铁车站新预筑法施工中顶管间距的优化设计 |
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| 引用本文： | 杨仙,张可能,李钟,邓美龙.地铁车站新预筑法施工中顶管间距的优化设计[J].中国铁道科学,2011,32(2). |
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| 作者姓名： | 杨仙 张可能 李钟 邓美龙 |
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| 作者单位： | 1. 中南大学,地球科学与信息物理学院,湖南,长沙,410083
2. 中建市政建设有限公司,北京,100061 |
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| 基金项目： | 中建市政建设有限公司横向课题 |
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| 摘 要： | 基于土拱效应理论,建立新预筑法顶管施工中顶管土拱效应模型.根据模型中土拱轴线的受力,推导出土拱轴线支座约束反力与模型几何参数之间的关系式.将此关系式与拱顶和拱脚的强度控制条件方程联立,得到求解顶管间距的方程组.给出验算土拱能体稳定性的判别式,验证顶管间距计算值的合理性.以采用新预筑法施工的沈阳地铁新乐遗址站1号风道为例.采用上述方法计算得到的顶管间距为3.28 m;通过调整切管位置和钢管半径可以优化没计顶管间距,从而减少管材消耗,节省施_上时间,降低地表沉降.
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| 关 键 词： | 地铁车站 隧道施工 新预筑法 顶管间距 土拱效应 优化设计 |
Optimal Design of Distance between Jacking Pipes of New Pre-Construction Method in Metro Station |
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| YANG Xian,ZHANG Keneng,LI Zhong,DENG Meilong.Optimal Design of Distance between Jacking Pipes of New Pre-Construction Method in Metro Station[J].China Railway Science,2011,32(2). |
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| Authors: | YANG Xian ZHANG Keneng LI Zhong DENG Meilong |
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| Institution: | YANG Xian1,ZHANG Keneng1,LI Zhong2,DENG Meilong2(1.School of Geo-Science and Infos-Physics,Central South University,Changsha Hunan410083,China,2.China Construction Municipal Construction Corporation Ltd,Beijing100061,China) |
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| Abstract: | Based on soil arching effect theory,the soil arching effect model of jacking pipes in new pre-construction method is built. According to the force analysis of the arch axes in the model,the relation formula between the constraining counter-force of the arch axes support and the geometric parameters of the model is gotten.Combined the relation formula with the strength control conditions of the top and feet of arch simultaneously,the equation for calculating the maximal distance between jacking pipes is dedu... |
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| Keywords: | Metro station Tunnel construction New pre-construction method Distance between jacking pipes Soil arching effect Optimal design |
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