地基摩擦力对预应力筏板基础的影响分析  

The Analysis of the Affects of the Soil Restraint on the Prestress Effect in the Prestressed Raft Foundation

作　　者：王翠颖[1] 王庆海 严青荣 李国华[1] 孙海峰[3] 

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京银泰建构预应力工程有限公司,北京100085 [3]天颂建设集团有限公司,浙江台州317500

出　　处：《施工技术》2016年第9期77-79,共3页Construction Technology

基　　金：住房和城乡建设部研究开发项目(K220140073)

摘　　要：为研究地基摩擦力对预应力作用效应的影响,采用ABAQUS软件对预应力筏板基础进行模拟计算,分析在不同地基摩擦系数、预应力大小、筏板基础长度等因素下,地基摩擦力对筏板混凝土中预压应力的影响,并与国内外相关计算结果进行对比分析。在类似工程中可以偏保守增加10%～20%的预应力筋来考虑地基摩擦力的影响。To study the effect of prestress on ground friction,ABAQUS software is used to simulate the prestressed raft foundation,with different friction coefficients,magnitude of prestress,and the foundation length. The results are compared with the results calculated by the domestic and foreign codes in order to draw some conclusions for the design of prestressed raft foundation. The effect of foundation friction can be offset by adding 10% ~ 20% prestressed tendons in similar engineering projects.

关 键 词：预应力 基础 筏板基础 地基摩擦力 作用 

分 类 号：TU471.15[建筑科学—结构工程]