支护结构施工动态参数反演及变形预测  

Dynamic Back-Analysis and Displacement Prediction for Retaining Structures

作　　者：刘念[1] 马林建[2] 夏慧民[2] 华瑞平[3] 

机构地区：[1]苏宁环球集团南京房地产开发有限公司,南京210024 [2]解放军理工大学工程兵工程学院,南京210007 [3]南京军区司令部工程科研设计所,南京210016

出　　处：《建筑科学》2010年第9期79-82,共4页Building Science

摘　　要：基于Powell寻优反演分析的方法,利用施工过程中上一施工工况的变形监测值反演下一工况的土体m值、支护结构刚度及支撑刚度,进而对施工过程中支护结构变形量的准确预报,实现对整个施工过程的动态优化设计。通过具体工程实例中结构变形量实测值与预测值的对比分析,验证反分析方法在支护结构设计和施工过程中的合理可行性且具有较高的精确度。Based on the displacement monitoring data in the previous construction operating mode,the m value of soil,the stiffness of the retaining structure and the brace were obtained through Powell back analysis,by which the structure deformation in the next operating mode was predicted.The method was proved to be feasible and accurate to calculate and to predict the displacements of the retaining structure on the basis of deep foundation pit engineering.

关 键 词：支护结构 Powell寻优法 反演分析 变形预测 

分 类 号：TU473.2[建筑科学—结构工程]