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建立了基于石膏模壳的混凝土空腹板架楼盖的有限元模型,通过施加竖向均布荷载对楼盖进行材料非线性分析,得出了其开裂荷载和极限荷载,描述了裂缝的形成、发展和破坏模式,总结了易开裂位置。通过修改模型几何参数,研究了参数的改变对现浇空心楼盖受力性能的影响,给出了荷载-挠度曲线图,对比了承载能力,得到较优楼盖模型,供设计人员参考。
The finite element model of plaster cast-in-situ concrete slab floor was established. The material nonlinear analysis of the floor was carried out by applying vertical uniform load. The cracking load and ultimate load were obtained. The formation of cracks, Development and destruction patterns, summed up the easy to crack location. By modifying the geometric parameters of the model, the influence of the parameter changes on the mechanical performance of the cast-in-situ hollow floor was studied. The load-deflection curve was given, and the bearing capacity was compared. The better floor model was obtained for designers’ reference.