考虑筏板厚度变化的共同作用数值分析  

Numeric analysis of interaction with raft thickness variation

作　　者：李小园[1] 冯春燕[1] 彭冬芹[1] 

机构地区：[1]海南有色工程勘察设计院,海南海口570206

出　　处：《兰州理工大学学报》2014年第2期137-140,共4页Journal of Lanzhou University of Technology

摘　　要：建立上部结构、筏板基础和地基的共同作用模型,通过改变筏板厚度,在考虑共同作用与不考虑共同作用两种情况下,研究筏板厚度对基础沉降的影响,筏板厚度对基础应力、应变的影响,筏板厚度对上部结构内力的影响.进行筏板基础的研究以改善筏板基础的设计方法,对于降低基础工程的造价具有非常重要的现实意义.通过改变筏板厚度,对考虑共同作用与不考虑共同作用进行对比分析.结果表明:在设计筏板基础时,不考虑共同作用的计算趋于保守,造成一定的浪费;筏板厚度对筏板沉降和差异沉降有一定的控制作用;筏板厚度的大小对于上部结构的内力有不可忽视的作用.The interaction model of superstructure, raft groundwork and foundation was established. In the case of considering the interaction and neglecting the interaction, the influence of raft thickness on foundation settlement, the stress and strain in foundation, and internal force of superstructure was studied. The raft groundwork was investigated to improve its designing method and this would have very important practical significance to reduce foundation cost. By changing raft thickness, the results of considering the interaction and neglecting the interaction were compared and analyzed. The results showed that the computation of the raft groundwork without the interaction was conservative, resulting in a certain amount of waste; the raft thickness had a certain control action over raft settlement and differential settlement; the raft thickness would play a nonnegligible role to determine internal forces of superstructure .

关 键 词：筏板厚度 上部结构 共同作用 

分 类 号：TU471.2[建筑科学—结构工程]