混合配筋预应力混凝土密肋楼盖三维有限元数值模拟  

3-D Finite Element Numerical Simulation for Waffle Slab Floor with Unbonded Prestressed Tendons and Nonprestressed Steel

作　　者：刘忠[1] 周长顺[1] 杨涛[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2008年第4期60-64,共5页Natural Science Journal of Xiangtan University

基　　金：湖南省教委资助项目

摘　　要：采用有限元软件ANSYS,模拟了均布荷载作用下,周边简支混合配筋预应力混凝土密肋楼盖从开始加载到破坏的全过程,得到了极限荷载,荷载-挠度曲线和裂缝分布情况.分析表明,计算结果与试验结果吻合较好,从而验证了在对混合配筋预应力混凝土密肋楼盖进行非线性有限元数值模拟中,应用实体单元SOLID65和等效荷载法的合理性.The finite element software was adopted in this thesis,and the process from loading to failure of four sides waffle slab floor with unbounded prestressed tendons and nonprestrcssed steel under the condition of distributed load was simulated, and the ultimate load, loaddeflection curves and the distribution of crack could be obtained. It was showed that the result of the experiment agree with the calculation closely, and the reasonableness of adopting solid element SOLID65 and equivalent load method in the nonlinear finite element numerical simulation of waffle slab floor with unbounded prestressed tendons and nonprestressed steel was proved.

关 键 词：三维有限元数值模拟 等效荷载法 实体单元 极限荷载 荷载-挠度曲线 

分 类 号：TU470[建筑科学—结构工程]