基于有限元的刚性桩复合地基优化设计  

THE OPTIMIZATION DESIGN OF RIGID-PILE COMPOSITE FOUNDATION BASED ON THE FINITE ELEMENT

作　　者：凌劲[1] 

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《低温建筑技术》2012年第9期93-95,共3页Low Temperature Architecture Technology

摘　　要：将采用美国CSI公司开发的通用有限元结构分析程序SAP2000对刚性桩复合地基进行计算分析。采用基于有限元分析的整体刚度+面弹簧法对筏板基础进行内力及变形分析。通过调整筏板厚度和群桩的布桩方式来调整筏板内力。结果表明,通过调整筏板厚度和群桩布桩方式可以使筏板内力在满足冲切要求的条件下,达到一个最小值,使得配筋量最优。This paper uses the CSI＇s integrated software SAP2000 for rigid-pile composite foundation＇s structure analysis and design.The method of overall stiffness and the surface springs based on finite element is adopted to analyze the internal force and deformation of the raft foundation.The results show that through the change of the raft thickness and the layout of the pile group,the raft internal force can reach a minimum on the condition of meeting the punching requirements.In this case,the amount of the reinforcing steel achieves optimal.

关 键 词：复合地基 刚性桩 筏板内力 不均匀沉降 

分 类 号：TU473[建筑科学—结构工程]