复合地基变形计算理论方法探讨  

Study on Settlement Calculation Theory for Composite Foundation

作　　者：周同和[1] 

机构地区：[1]郑州大学综合设计研究院,河南郑州450002

出　　处：《建筑科学》2005年第1期61-65,共5页Building Science

摘　　要：复合地基复合土层压缩模量的计算关系到建筑物变形计算和复合地基的选型 ,本文通过对《建筑地基处理技术规范》(JGJ79- 2 0 0 2 )刚性桩复合地基和柔性桩复合地基及半刚性桩复合地基复合土层模量计算式的分析 ,讨论界定规范公式的使用条件和复合模量计算统一方法 ,提出一种复合地基变形计算新方法并通过实例分析验证了计算模型的适用性。The compressive modulus of composite foundation is significant for the building settlement calculation and the structure style selection of foundation. After study on the items in Code for Building Foundation Reinforcement (JGJ79-2002), three types of composite foundation are compared: composite foundation with rigid pile (RP), composite foundation with flexible pile (FP) and composite foundation with semi-rigid pile (SP). The formula of compressive modulus for the three kinds of composite foundation are analyzed in detail, and the application circumstances for the formula is confined, then a Unified Calculation Approach is suggested for compressive modulus calculation. A new method is put forward for the settlement calculation of composite foundation. Finally, a case study is given to validate the suggested approach. It is useful for the practical application and further study.

关 键 词：刚性桩复合地基 变形计算 土层 柔性桩 建筑地基 压缩模量 复合模量 算理 理论方法 公式 

分 类 号：TU473[建筑科学—结构工程] G623[建筑科学—土工工程]