# [1]王强,刘松玉,童立元,等.多支撑地下连续墙动态开挖过程中m值反分析[J].东南大学学报(自然科学版),2011,41(2):352-358.[doi:10.3969/j.issn.1001-0505.2011.02.027] 　Wang Qiang,Liu Songyu,Tong Liyuan,et al.Back-analysis of m value of multi-braced slurry wall in staged excavation[J].Journal of Southeast University (Natural Science Edition),2011,41(2):352-358.[doi:10.3969/j.issn.1001-0505.2011.02.027] 点击复制 多支撑地下连续墙动态开挖过程中m值反分析() 分享到： var jiathis_config = { data_track_clickback: true };

41

2011年第2期

352-358

2011-03-20

## 文章信息/Info

Title:
Back-analysis of m value of multi-braced slurry wall in staged excavation

(1东南大学交通学院,南京 210096)(2安徽理工大学土木建筑学院,淮南 232001)
Author(s):
(1 School of Transportation, Southeast University, Nanjing 210096, China)
(2School of Civil Engineering and Architecture, Anhui University of Science and Technology,Huainan 232001,China)

Keywords:

TU375.4
DOI:
10.3969/j.issn.1001-0505.2011.02.027

Abstract:
In order to accurately determine the m value, a reasonable calculation model must be chosen. Combining with support for dynamic multi-braced excavation process, the constrained nonlinear design model is established based on the elastic foundation beam method. Taking the minimum of relative residual sum of squares of measured and calculated displacement as the goal, the objective function of parameters of the back-analysis is established according to the measured data, and then the objective function is optimized by Matlab-constrained nonlinear optimization techniques. A multi-layer dynamic construction back-analysis method is established to enable m value to reflect soil properties. The practical engineering applications of deep pit of Suzhou subway shows that the displacement back-analysis method is simple and easy and m value obtained can well reflect the actual situation. Meanwhile, it can accurately predict the displacement of next working conditions.

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