[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]
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多支撑地下连续墙动态开挖过程中m值反分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第2期
页码:
352-358
栏目:
土木工程
出版日期:
2011-03-20

文章信息/Info

Title:
Back-analysis of m value of multi-braced slurry wall in staged excavation
作者:
王强12刘松玉1童立元1李仁民1方磊1
(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):
Wang Qiang12Liu Songyu1Tong Liyuan1Li Renmin1Fang Lei1
(1 School of Transportation, Southeast University, Nanjing 210096, China)
(2School of Civil Engineering and Architecture, Anhui University of Science and Technology,Huainan 232001,China)
关键词:
约束非线性m值反分析弹性地基梁法动态开挖
Keywords:
constrained non-linear back-analysis of m value elastic foundation beam method dynamic excavation
分类号:
TU375.4
DOI:
10.3969/j.issn.1001-0505.2011.02.027
摘要:
为了能够准确地确定m值,必须合理选择计算模型.采用弹性地基梁法,结合现场多支撑动态开挖的过程,建立了有约束非线性最优化设计模型.通过以实测与计算位移的相对残差平方和最小为目标,首先根据实测位移建立参数反分析的目标函数,然后采用Matlab有约束非线性优化技术对其进行优化,以达到分阶段多层动态施工反分析的目的,从而使所得的m值能够反映土性特征.苏州地铁一号线深基坑工程的实际应用表明,位移反分析方法简洁方便,所得m值能够较好地反映现场实际情况,同时可以准确地预测下一工况的位移.
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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备注/Memo

备注/Memo:
作者简介:王强(1978—),男,博士生;刘松玉(联系人),男,博士,教授,博士生导师,liusy@seu.edu.cn.
基金项目:苏州市科技计划支撑资助项目(ZXJ0805)、安徽省高等学校省级优秀青年人才基金资助项目(2011SQRL045).
引文格式: 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]
更新日期/Last Update: 2011-03-20