城市轨道交通隧道周边地下管线变形预测研究

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摘要通过总结工程实测资料，指出地下管线刚度较大时，管体与地层之间存在较大的差异沉降。地下管线整体变形与地层移动规律基本相同，隧道垂直下穿时，管体沉降曲线基本符合正态分布。对隧道工程地表沉降预测Peck公式进行修正，建立地下管线变形预测公式，结合已有地层损失率研究成果，计算得出管线降槽宽度参数的参考取值。数值模拟结果表明，隧道水平下穿较垂直下穿引起的管线变形大，预测公式可初步评价水平下穿时管线的变形。刚性管线纵向拉应变预测公式也可做相应修正，以计算管线自身的变形。工程应用实例表明，相关修正公式预测结果与模拟计算和实测结果较为吻合，具有较强的实用性。

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关键词 ：隧道工程, 城市轨道交通, 地下管线, 变形预测

Abstract：Through summarizing the monitoring results，it is pointed that when the pipeline rigidity is large，and the settlement between pipeline and formation is large. The general deformation law of underground pipeline is basically the same to the move of stratum. When the pipeline is vertical above the tunnel，the settlement curve fits to the normal distribution. The Peck formula for ground surface settlement prediction in tunnel engineering is corrected，and the pipeline settlement prediction formula is established. Combining the former research results of stratum loss rate ，the reference value of pipeline settlement trough width parameter is calculated. The result of numerical simulation shows that the deformation of pipeline parallel above the tunnel is more than vertical above the tunnel，and the pipeline settlement prediction formula may preliminarily evaluate the deformation of pipeline parallel above the tunnel. The rigid pipeline longitudinal strain calculation formula may also be modified to get the pipeline deformation. The engineering application proves that the pipeline settlement prediction formula，numerical simulation and monitoring results are in good agreement，and the pipeline settlement prediction formula is good in application.

Key words： tunnelling engineering urban rail transit underground pipeline deformation prediction

收稿日期: 2012-05-24

引用本文:

吴锋波1，2，3，金淮1，尚彦军4. 城市轨道交通隧道周边地下管线变形预测研究[J]. 岩石力学与工程学报, 2013, 32(s2): 3592-3601.
WU Fengbo1，2，3，JIN Huai1，SHANG Yanjun4. UNDERGROUND PIPELINE DEFORMATION PREDICTION AROUND URBAN RAIL TRANSIT TUNNEL ENGINEERING. , 2013, 32(s2): 3592-3601.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/3592

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