某高层长短桩地基-基础-上部结构共同作用分析  

Analysis on Co-action of Upper Structure and Long-Short Pile Foundation of a Building

作　　者：尹骥[1] 

机构地区：[1]上海岩土工程勘察设计研究院有限公司,上海200438

出　　处：《地下空间与工程学报》2009年第A02期1568-1572,1579,共6页Chinese Journal of Underground Space and Engineering

摘　　要：利采用三维岩土工程有限元程序zsoil.pc v2009,采用三维地基-基础-上部结构的分析方法,计算了某采用长、短桩基的33层剪力墙结构的沉降。根据桩基施工对土体的扰动情况,提出了桩基沉降计算的"大值"和"小值",并分别采用了Mohr-Coulomb模型和HSS模型计算。计算结果表明,采用不同的本构模型分析,桩基的沉降、长短桩的内力分配有较大差别。The settlement of a 33 storey shear wall structure is calculated with considering the co - action of up per structure and foundation. The geotechnical 3D FEM software zsoil, pc v2009 is employed to establish the numeri cal model. The conception of ＂large value＂ and ＂small value＂ of the pile settlement is proposed according to the disturbance degree of construction of the piles. Mohr - Coulomb model and HSS model are recommended to calculate the ＂large value＂ and ＂small＂ value of the pile settlement. The results of the analysis shows that the pile settlement and force distribution of long - short pile is quite different when using different model.

关 键 词：桩基沉降 筏板内力 长短桩地基 三维有限元 地基基础共同作用 HSS模型 

分 类 号：TU470.3[建筑科学—结构工程]