空间钢构架混凝土承台的非线性有限元分析

Non-linear Finite Element Analysis of Concrete Pile Cap with Spatial Steel Frame

基于ABAQUS大型有限元分析软件,建立了桩基厚承台非线性有限元分析模型.运用所建立的模型,对5个空间钢构架混凝土承台进行了非线性有限元分析,计算值与试验值吻合得较好,表明所建立的有限元计算模型可较好地模拟空间钢构架混凝土承台的性能;分析了空间钢构架混凝土承台内部完整的力流分布,探讨了空间钢构架混凝土承台的受力机理,为空间钢构架混凝土承台传力模型的建立提供了理论计算依据.在理论分析和以往研究的基础上,提出了空间钢构架混凝土承台的桁架模型.

The analysis model of non-linear finite element analysis （NFEA） of thick pile cap is established by using ABAQUS soitware. 5 Concrete Pile Cap with Spatial Steel Frame are analyzed by using the NFEA model proposed, which shows that the theoretical values are in good agreement with experimental values, and the behavior of Concrete Pile Cap with Spatial Steel Frame can be simulated by using NFEA model proposed. The internal integrate force flow distribution of Concrete Pile Cap with Spatial Steel Frame is analyzed and the stress mechanism of two piles thick caps is researched, which can provide theoretical calculation basis for establishing load transfer model of Concrete Pile Cap with Spatial Steel Frame. On the basis of theoretical analysis and the previous studies, the truss model of Concrete Pile Cap with Spatial Steel Frame is put forward, which can be referred to design of two piles thick pile cap.