预制装配整体式框架节点的抗震性能仿真研究

Study on Seismic Behavior Simulation of the Precast Assembled Integral Frame Joint

目前我国装配整体式框架结构正得到大力发展,因此对该类结构的抗震研究极其必要,而节点的抗震性能又是整个结构的关键。为了分析现有的装配整体式框架节点的抗震性能,本文应用ANSYS有限元软件对预制梁-柱-叠合板边节点进行数值仿真,分析表明:数值仿真结果与试验结果基本一致,装配式框架节点随着轴压比增加其屈服荷载和极限荷载都略有增加,叠合梁现浇部分的高度在规范限定范围内变化对节点骨架曲线的影响较小,相同条件下装配式框架节点与现浇框架节点的抗震性能相近。

At present,the integral frame structure of our country is developing vigorously,therefore,the seismic research of the structure is necessary,and the seismic behavior of the joint is the key of the whole structure. In order to analyze the seismic performance of the assembled integral frame joint,the ANSYS is used to simulate precast concrete layered slab and beam to column exterior joints. The results show that the numerical simulation results are basically consistent with the experimental results,the yield load and ultimate load are increased slightly with the increase of the axial compression ratio,the height of cast-in-place section of composite beam has little influence on the curve of the joint in the range of the specification limits,and the seismic performances of the same condition of the assembled integral frame joint with cast-in-situ frame joints are similar.