考虑动态因素的深基坑开挖反演分析及预测

›› 2005, Vol. 26 ›› Issue (3): 455-460.

考虑动态因素的深基坑开挖反演分析及预测

冯俊福¹，俞建霖²，杨学林³，龚晓南²

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

收稿日期:2003-11-06 出版日期:2005-03-10 发布日期:2013-11-21
作者简介:冯俊福，男，1978年生，硕士，现从事基坑开挖及围护方面的研究工作

Back analysis and prediction of deep pit foundation excavation considering dynamic factors

FENG Jun-fu¹, YU Jian-lin², YANG Xue-lin³, GONG Xiao-nan²

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

Received:2003-11-06 Online:2005-03-10 Published:2013-11-21

摘要/Abstract

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。

关键词: m法, 支护结构, 反分析

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.

Key words: m-method, retaining structure, back-analysis

中图分类号:

TU 473.2

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]. , 2005, 26(3): 455-460.

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]. , 2005, 26(3): 455-460.

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