考虑共同作用对结构内力影响的有限元分析  

Finite Element Analysis for Influence of Structural Internal Force Considered the Interaction

作　　者：田丹丹[1] 张富钧 王国龙 TIAN Dan-dan;ZHANG Fu-jun;WANG Guo-long(Gansu Vocational and Technical College of Communications,Lanzhou 730070,China;Jinchang Planning&Architecture Design Institute,Jinchang 737100,China)

机构地区：[1]甘肃交通职业技术学院,兰州730070 [2]金昌市规划建筑设计院,甘肃金昌737100

出　　处：《工程建设与设计》2020年第17期3-5,共3页Construction & Design for Engineering

基　　金：2019年度甘肃省高等学校创新能力提升项目(2019A-232)

摘　　要：利用大型通用有限元软件ANSYS14.0建立了传统模型和框架结构-桩筏基础-地基共同作用的有限元模型.通过对2种模型框架柱的内力和筏板内力及沉降的计算来分析考虑共同作用后对结构内力的影响.计算结果表明:通过对传统方法和考虑共同作用下模型的受力进行对比分析,发现建筑物在考虑共同作用后,框架柱的轴力和弯矩发生了重分布现象,角柱和边柱的轴力普遍增加,中柱的轴力则普遍减小.所有柱的弯矩普遍增加,尤其是底层柱的弯矩增加的幅度较大.对于筏板的沉降和应力,有较明显的减小趋势.The traditional model and the finite element model of frame structure-pile raft foundation-foundation interaction are established by using ANSYS14.0. Through the calculation of the internal force of the frame column and raft and settlement of the two models, the influence of the combined action on the internal force of the structure is analyzed. The results show that: through the comparative analysis of the traditional method and the model considering the joint action, it is found that the axial force and bending moment of the frame column are redistributed after considering the joint action, the axial force of the corner column and the side column is generally increased, and the axial force of the middle column is generally reduced. The bending moment of all columns increases generally,especially in the bottom column. For the raft settlement and stress, there is a more obvious reduction trend.

关 键 词：框架结构 桩筏基础 共同作用 数值模拟 

分 类 号：TU375.4[建筑科学—结构工程]