嵌岩深基坑支护结构施工过程内力监测与反分析研究  

Observation and Back Analysis of Inter Force of Rock-socketed Retaining Structure for Deep pit

作　　者：谢军 孙旻[2] 徐伟[2] 张太科 

机构地区：[1]广州市公路管理局北城分局,广州510425 [2]同济大学建筑工程系,上海200092 [3]广州珠江黄埔大桥建设有限公司,广州511434

出　　处：《建筑监督检测与造价》2011年第4期18-20,30,共4页Supervision Test and Cost of Construction

摘　　要：基于广州珠江黄埔大桥工程实例,介绍了嵌岩地下连续墙在深基坑工程的应用,针对其在基岩位置应力集中的特点,在开挖施工中采用了多种监测手段并利用数值方法进行反分析。建立了支护结构的有限元模型,利用现场实测位移数据反演地连墙和内衬在开挖过程中的应力水平。计算结果与现场实测值吻合较好,为支护结构安全性评价提供了理论依据。The application of rock-socheted diaphragm is introduced through the construction of the Guangzhou Pearl River Huangpu Bridge.During the process of construction,the internal force of the support for this pit must be controlled strictly,especially on the top of bedrock.Informational construction technology such as numerical method and observation system is applied to control excavation process.The stress of diaphragm wall and liner is presented by back analysis based on measured displacement of FEM model of retaining structure retaining structure.The result fit the in-situ data well and provides theoretical basis for the safety evaluation of the support.

关 键 词：嵌岩深基坑 支护结构 反分析 地下连续墙 

分 类 号：TU753[建筑科学—建筑技术科学]