深圳填海场地基坑设计参数反分析研究  

Back Analysis for Design Parameters of Foundation Pit in Shenzhen Reclamation Site

作　　者：冯永乾[1] 郭亚磊[2] 马驰[2] FENG Yongqian;GUO Yalei;MA Chi(Bureau of Public Works of Shenzhen Municipality,Shenzhen Guangdong 518000,China;Shenzhen Research and Design Institute,China Academy of Railway Sciences,Shenzhen Guangdong 518000,China)

机构地区：[1]深圳市建筑工务署,广东深圳518000 [2]中国铁道科学研究院深圳研究设计院,广东深圳518000

出　　处：《铁道建筑》2018年第10期94-96,102,共4页Railway Engineering

基　　金：中国铁道科学研究院基金(2016YJ157)

摘　　要：深圳填海场地受地质条件以及土体不确定性的影响较大,其土层参数难以确定。结合深港西部通道深基坑工程,根据实测的支护结构内力和变形,反演出地基土层的土体变形模量、地基系数的比例系数和综合等效内摩擦角。结果表明,反分析方法原理简单,计算快捷,结果精确,可以更好地应用于后续基坑工程变形预测分析。反演得到的土工参数可以用于设计。Shenzhen reclamation site is greatly affected by geological conditions and soil uncertainty,and its soil parameters are diff icult to determine.Combing with the deep foundation pit project of Shenzhen-Hong Kong West Corridor,soil deformation modulus of foundation soil layer,ratio coeff icient of the foundation coeff icient and the comprehensive equivalent internal friction angle were inversed according to the measured internal force and deformation of the supporting structure.The results show that the back analysis method is simple in principle,fast in calculation and accurate in result,which can be well applied to the deformation prediction analysis of subsequent foundation pit engineering.The geotechnical parameters obtained by inversion can be used for design.

关 键 词：基坑设计 反分析 弹性模量 基床系数 等效内摩擦角 

分 类 号：TU431[建筑科学—岩土工程]