摘要
结构设计中往往不考虑上部结构与地基基础之间相互作用,通过ANSYS建立三座高层塔楼及其裙房有限元模型进行受力分析,研究上部结构和地基基础相互作用下的上部结构柱、梁、裙房剪力墙内力分布特点。结果表明:塔楼上部结构会在相互作用影响下出现边柱及角柱的内力增大,其中在角柱部位的内力增量最多,共同作用对上部结构柱轴力的影响主要在结构一、二层,且角柱受影响较大。相互作用同样对底层梁及裙房外墙计算结果影响较大,在设计时应注意裙房外墙等部位的裂缝控制。
Structural design usually does not cover the interaction between superstructure and foundation.Based on the force analysis of 3high towers built by ANSYS and finite element model of their podiums,the characteristics of internal force distribution of superstructure columns,girders and shear walls of podiums under the interaction between superstructure and foundation is studied.The analysis results indicate that the superstructure of tower will increase the internal force of side columns and corner columns under interaction,among which the internal force of corner columns increases most.The axial force influence of interaction on superstructure columns is mainly in the first and second layer of structure,and corner columns are influenced most.As the interaction has a bigger influence on the calculation results of basement girders and external wall of podiums,crack control of external wall of podiums and other locations shall be paid attention in design.
出处
《甘肃科学学报》
2016年第2期62-67,共6页
Journal of Gansu Sciences
基金
甘肃省科技支撑计划(1104GKCA035)
关键词
多塔裙楼
相互作用
筏板基础
内力分析
有限元
Multi-tower podium building
Interaction
Raft foundation
Internal force analysis
Finite element
