钢筋桁架混凝土双向叠合板的力学性能分析  

Mechanical Behavior Analysis of Reinforced Truss Concrete Two-way Composite Slabs

作　　者：张弛 朱杰江[1] ZHANG Chi;ZHU Jie-jiang(Department of Civil Engineering,Shanghai University,200444,China)

机构地区：[1]上海大学土木工程系,200444

出　　处：《混凝土与水泥制品》2020年第5期75-79,共5页China Concrete and Cement Products

摘　　要：利用有限元软件ABAQUS,分别建立了两种拼接方法(平行拼接和十字拼接)下的双向叠合板计算模型,并与现浇板计算模型进行了对比,分析了叠合板承载力和刚度的差异,并探讨了叠合板的损伤分布及桁架腹筋对叠合板承载力的影响。结果表明,线弹性阶段,双向叠合板的后浇带可增强结构的整体性;塑性阶段,双向叠合板后浇带属于受力薄弱环节,出现明显的应力集中和损伤分布;增大桁架腹筋的直径和排数对提高叠合板的承载力有显著影响。Using the finite element software ABAQUS, the calculation models of two-way composite slabs which have two kinds of splicing methods(parallel splicing joint and cross splicing joint) were established respectively, and compared with the poured concrete slabs calculation model, and the difference of bearing capacity and stiffness was analyzed, and the damage distribution of composite slabs and the influence of truss web bars on bearing capacity were discussed. The results show that during the elastic period, the post-pouring belt of the two-way composite slabs can enhance the integrity of the structure. In the plastic period, the post-pouring belt is the weak part of slabs. Increasing the diameter and the number of truss web bars has a significant effect on improving the bearing capacity of composite slabs.

关 键 词：拼缝 叠合板 ABAQUS软件 桁架腹筋 承载力 

分 类 号：TU375.2[建筑科学—结构工程]