| 考虑动态因素的深基坑开挖反演分析及预测 |
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| 引用本文： | 冯俊福,俞建霖,杨学林,龚晓南.考虑动态因素的深基坑开挖反演分析及预测[J].岩土力学,2005,26(3):455-460. |
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| 作者姓名： | 冯俊福 俞建霖 杨学林 龚晓南 |
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| 作者单位： | 1.杭州市建筑设计研究院，浙江 杭州 310001；2.浙江大学 建工学院岩土所，浙江 杭州 310027；3.浙江省建筑设计研究院，浙江 杭州 310006 |
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| 摘 要： | 以弹性地基梁法为基础，运用动态施工反演分析的思想，即在常规的反分析过程中引入隧步开挖和隧道支撑的动态施工因素，反算反映基坑土体性态的m值，以求仿真模拟深基坑工程实际施工情况，进而为下一工况的变形预报提供可靠保证。最后通过一个工程实例的计算值与实测值对比分析，验证了该法在基坑支护结构设计和施工过程中是合理可行性的。
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| 关 键 词： | m法 支护结构 反分析 |
| 文章编号： | 1000-7598-(2005)03-0455-06 |
| 收稿时间： | 2003-11-06 |
| 修稿时间： | 2003年11月6日 |
Back analysis and prediction of deep pit foundation excavation considering dynamic factors |
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| FENG Jun-fu,YU Jian-lin,YANG Xue-lin,GONG Xiao-nan.Back analysis and prediction of deep pit foundation excavation considering dynamic factors[J].Rock and Soil Mechanics,2005,26(3):455-460. |
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| Authors: | FENG Jun-fu YU Jian-lin YANG Xue-lin GONG Xiao-nan |
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| Institution: | 1.Hangzhou Architectural Design & Research Insititute, Hangzhou 310001, China; 2.Department of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China; 3.Zhejiang Architectural Design & Research Insititute, Hangzhou 310006, China |
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| Abstract: | Based on the elastic foundation beam method this paper presents the ideas of back analysis of m constructive process, i.e., a construction process of excavation and support in stage is introduced into the common back analysis, and providing reliable guarantee for predicting the deformations in succession construction stages. Grounded on the incremental measured datum between two arbitrary stages, such as the horizontal deformation of retaining structures, and by use of the back-analysis method of FEM and simplex optimization techniques, the elastic models of several layers of soils are calculated and back-analysised. Finally the method is proved to be feasible to calculate and to predict the displacements of retaining structures on the basis of a deep foundation pit engineering. |
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| Keywords: | m-method retaining structure back-analysis |
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