| 新建铁路路基斜交超浅埋地铁的变形监控与安全评估 |
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| 引用本文： | 白皓,苏谦,梁龙标,王武斌,毛泽宇.新建铁路路基斜交超浅埋地铁的变形监控与安全评估[J].中国安全科学学报,2011,21(7). |
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| 作者姓名： | 白皓 苏谦 梁龙标 王武斌 毛泽宇 |
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| 作者单位： | 1. 西南交通大学土木工程学院,四川成都,610031
2. 中铁第四勘查设计院集团有限公司路基设计研究处,湖北武汉,430063 |
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| 基金项目： | 中铁第四勘察设计院集团有限公司科研项目(2010K25) |
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| 摘 要： | 为评估深厚软土地区临近超浅埋地铁施工对盾构的扰动,结合斜交超浅埋地铁的某客运专线桩板结构路基工程,基于"第三方监测"的工程安全监控模式进行施工及试运营期间的安全评估,并研究了各阶段的变形规律及安全敏感因素。研究结果表明:地铁水平位移只出现于桩基施工阶段;沉降变形与收敛变形则贯穿于整个施工与运营阶段,变形值呈"增大—减小—稳定"的趋势;地铁变形中沉降影响最大,收敛变形次之,水平位移最小,且变形极值均小于安全限值,说明地铁结构是安全的;桩板结构有效控制了后续沉降的发生,大大降低了新建客运专线与既有地铁的相互影响。
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| 关 键 词： | 客运专线 桩板结构路基 超浅埋地铁 变形监控 安全评估 |
Deformation Observation and Risk Evaluation of Over-shallow-embedded Metro with Above-skewed New Railway Subgrade |
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| BAI Hao,SU Qian,LIANG Long-biao,WANG Wu-bin,MAO Ze-yu.Deformation Observation and Risk Evaluation of Over-shallow-embedded Metro with Above-skewed New Railway Subgrade[J].China Safety Science Journal,2011,21(7). |
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| Authors: | BAI Hao SU Qian LIANG Long-biao WANG Wu-bin MAO Ze-yu |
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| Institution: | BAI Hao1 SU Qian1 LIANG Long-biao2 WANG Wu-bin1 MAO Ze-yu2(1 School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China 2 Subgrade Design Office,China Railway Siyuan Survey and Design Group Co.,ltd,Wuhan Hubei 430063,China) |
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| Abstract: | Based on the safety model of the third party monitoring,the deformations of metro and pile-board subgrade are observed to evaluate the disturbance caused by constructing near over-shallow-embedded metro during construction and operation.The deformation rules and safe targets of each stage are raised according to the pile-broad subgrade structure of a certain passenger dedicated line.The result shows that horizontal displacements of metro only take place during pile foundation construction,while settlements ... |
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| Keywords: | passenger dedicated line pile-board subgrade over-shallow-embedded metro deformation observation risk evaluation |
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