摘要
筏板基础的受力性能较为复杂,同时学术界对筏基的探究相对缺乏,使得在实践过程中针对筏板的计算理论和分析方法并不全面和可靠.采用断开式分析方法的筏板基础造价费用相对较高,建筑材料浪费较大.为了探究上部建筑结构和基础共同作用,运用有限元设计程序对框剪结构-筏板基础-地基共同作用体系创建了三维有限元分析模型,比较分析了两种状态下上部结构轴力和弯矩的变化以及基础沉降.结果表明,考虑共同作用能够让筏板的差异沉降得以减小,上部结构的轴力和弯矩产生了重分布.同时,因建筑结构上部刚度的作用,筏板内力降低,钢筋使用量也相对减少.
The performance of the raft foundation is more complex, and the research of the raft foundation is relatively uncommon in the academic field, which makes the calculation theory and the analysis method of the raft plate not comprehensive and reliable in practice. The cost of the raft foundation is relatively high, and the waste of building materials is relatively high. In order to explore the interaction of upper structure and foundation, this paper uses the finite clemcnt program structure raft foundation soil interac- tion system of frame shear to create three-dimensional finite element analysis model, and comparative a- nalysis of the changes of two kinds of state of structure under axial force and bending moment of founda- tion settlement is carried out. The results show that the differential settlement can bc reduced by consider- ing thc interaction, and the axial force and bending moment of the superstructure can be redistributed. At the same time, due to the role of the upper stiffness of the building structure, the internal force of the raft is reduced, and the use of steel bars is relatively reduced.
出处
《湖南工程学院学报（自然科学版）》
2017年第2期71-76,共6页
Journal of Hunan Institute of Engineering(Natural Science Edition)
关键词
框剪结构
共同作用
筏板基础
frame shear wall structure
interaction
raft-foundation
