两个特大超深基坑嵌岩支护结构可靠度分析  

Analysis on Reliability of Rock-socketed Support Structures in Two Big and Deep Foundation Pits

作　　者：毛金萍[1] 徐伟[2] 

机构地区：[1]浙江理工大学建筑工程学院土木系,杭州310018 [2]同济大学建筑工程系,上海200092

出　　处：《地下空间与工程学报》2009年第A02期1646-1652,共7页Chinese Journal of Underground Space and Engineering

基　　金：高等学校博士学科点专项科研基金(2000024712);浙江理工大学基金资助(0714057-Y)

摘　　要：受岩土性能参数不确定性和基坑开挖过程中未知因素的影响,深基坑嵌岩支护结构在开挖过程中的内力和变形是不确定的,需要采用可靠度理论对其进行分析。以润扬北锚碇深基坑和阳逻南锚碇深基坑为对象,对两个特大超深基坑的嵌岩支护结构进行可靠度计算和比较分析。分析结果在一定程度上可以说明一些问题,得到一些有益结论,比如可靠度水平取值,反过来可以指导以后类似工程的设计与施工,以期达到安全与经济的统一。Due to the uncertainty of rock and soil mechanical characters and unknown factors in pit excavation, the internal force and deformation of rock - socketed support structures in deep foundation pits are uncertain. The reliability theory are used in analysis on two big and deep foundation pits, i.e. Runyang North Anchor Foundation Pit and Yangluo South Anchor Foundation Pit. The reliability comparison of rock - socketed support structures between them are carried out using the reliability method. In the end, some conclusions are drawn, such as the reliability level selection, which can be used as a reference in design and construction of similar engineering for the unity of safety and economy.

关 键 词：可靠度 嵌岩支护结构 人工神经网络 

分 类 号：TU473.2[建筑科学—结构工程]