| 地铁车站洞桩法开挖中板下土体的侧向作用研究 |
| 投稿时间：2010-02-08 修订日期：2010-02-08 点此下载全文 |
| 引用本文：耿东阳,赵文,周永伟.地铁车站洞桩法开挖中板下土体的侧向作用研究[J].钻探工程,2010,37(3):71-73,81.GENG Dong-yang,ZHAO Wen,ZHOU Yong-wei. Research on the Soil Lateral Effect during the Excavation with PBA Method in a Subway Station[J]. Drilling Engineering, 2010,37(3):71-73,81. |
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| 基金项目:国家自然科学基金项目（项目编号：50508008） |
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| 中文摘要:为得到在开挖过程中围护桩受到的弯矩和侧向位移随开挖深度变化的规律，对比分析不同断面在开挖中板下土体过程中加撑与不加撑对围护桩内力和位移的影响，采用了GTS软件对中街车站PBA法开挖中板下土体进行二维分析，确定了钢支撑的间距和位置，得出了加撑后围护桩所受的最大弯矩及侧向位移都有较大幅度的减小的结论，其中最大弯矩能减少27.8%，侧向偏移最多能减少31.7%。 |
| 中文关键词:稳定性 有限元 加撑 弯矩 位移 地铁车站 |
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| Research on the Soil Lateral Effect during the Excavation with PBA Method in a Subway Station |
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| Abstract:In order to get the moment of retaining pile during the excavation and the regulation of lateral displacement changing with excavation depth, comparative analysis was made on the internal force and displacement of retaining pile both with and without steel support during the excavation in different crossing-sections. Two-dimensional analysis was made on the excavation soil in Zhongjie Station with PBA method by MIDAS-GTS to determined the location and the spacing of the steel support and the conclusion was got that the largest moment of piles and the displacement would be reduced 278% and 317% respectively with steel support. |
| keywords:stability FEM steel support moment displacement subway station |
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