摘要
利用大型通用有限元软件ANSYS14.0建立了框架结构–桩筏基础–地基共同作用的整体有限元分析模型。通过改变上部结构的刚度来研究考虑共同作用后筏板的沉降和筏板内力的变化规律。计算结果表明,随着上部结构刚度的增加,上部结构刚度对建筑物基础沉降的影响越来越小。上部结构刚度较小时,筏形基础主要以整体弯曲变形为主,上部结构刚度较大时,筏板中的应力呈增长趋势。随着上部结构刚度的增加,筏板弯曲变形的增长幅度减弱。
A finite element model of the interaction between frame structure-pile-raft foundation-foundation was established by using the large-scale general finite element software ANSYS14.0.By changing the stiffness of the superstructure,the settlement of the raft and the change of the raft internal force are studied.The results show that with the increase of the stiffness of the superstructure,the influence of the stiffness of the superstructure on the settlement of the building foundation reduces.When the stiffness of the superstructure is small,the raft foundation is mainly subject to overall bending deformation,and when the stiffness of the superstructure is large,the stress in the raft tends to increase.With the increase of superstructure stiffness,the increase of raft bending deformation decreases.
作者
张富钧
田丹丹
王国龙
Zhang Fu-jun;Tian Dan-dan;Wang Guo-long
出处
《建筑技术开发》
2020年第6期5-6,共2页
Building Technology Development
基金
2019年度甘肃省高等学校创新能力提升项目(2019A-232)
关键词
结构刚度
基础沉降
基础内力
数值模拟
structural stiffness
foundation settlement
fundamental internal force
numerical formulation
