摘要
根据基坑开挖过程土体性态参数和围护结构力学响应的不确定性,建立基坑开挖力学响应的预报机制.针对基坑开挖工程地下连续墙方案,用实测的支护结构力学响应信息反演土体性态参数及支护结构力学计算参数,确定预报参数,对下一步支护结构的力学响应作预报,以达到分步开挖过程的动态仿真.工程实践表明:反演和预报计算取得了良好的效果,为工程决策提供了理论依据.
Considering the uncertainty of mechanics response of soil mass and its retaining wall during the excavation of deep foundation pits, an excavation forecast mechanism of deep foundation pits is developed . In respect of continuous concrete wall, the parameters of soil and structures are back analyzed with information of the measured mechanics response, and forecast parameters are then determined. Furthermore, the characteristics of following steps in excavation are forecasted to simulate practice construction procedure. The results of a case study demonstrate that good effects of back analysis and forecast have been achieved. The study can offer a theoretical basis for engineering de-
出处
《土木工程学报》
EI
CSCD
北大核心
1998年第5期33-38,共6页
China Civil Engineering Journal
基金
中国博士后科学基金
国家自然科学基金(重点项目批准号59738160)资助项目
关键词
基坑开挖
安全预报
工程决策
excavation of foundation pit, safety forecast, engineering decision
