深圳滨海隧道盾构隧道土体位移及地面位移场分布分析

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI:10.1109/ICETCE.2011.5775839

C. Xuejun, Zou Baoping, Yi Jue, Mu Rigen, Liu Jingjuan

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引用次数: 1

摘要

在深圳填海区盾构施工中，准确预测土体位移和应力变化是至关重要的。以深圳地铁2号线滨海大道后科段盾构隧道施工为例，利用FLAC3D软件对隧道开挖进行数值模拟预测，对隧道数值勘探进行预测，研究隧道间隔距离、埋深、埋深对双车道隧道变形、开挖应力场和地表沉降变化的影响关系。以及盾构施工参数等因素。通过对监测数据的综合分析，得出地表累积沉降最大值均发生在中轴线纵向附近，隧道开挖后周边应力重新分布，影响最大主应力集中区有限的结论。

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Analysis on soil displacement and distribution of ground displacement field of shielding tunnel under the BinHai thorough fare of Shenzhen

It's crucial to predict soil displacement and stress variation accurately in shield construction of Shenzhen reclamation area. Citing shield tunneling on Hou-Ke section under the BinHai thoroughfare of Shenzhen Metro Line 2 as an example, authors forecasted the numerical simulation for the tunnel excavation with the software of FLAC3D, predicted the numerical tunnel exploration and made a research on the relationship between double-lane tunnel deformation as well as the changes of excavation stress field and surface sedimentation influenced by tunnel separation distance, depth, and shield tunneling parameter and other factors. Trough the comprehensive analysis of monitoring data, the authors reached conclusions that all the maximum value of surface accumulative sedimentation occurred near the longitudinal of medial axis, the peripheral stress was redistributed after tunnel excavation and the maximum principal stress concentration area of influence was limited.

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2011 International Conference on Electric Technology and Civil Engineering (ICETCE)

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