钢—混凝土组合结构节点抗震性能研究

【作者】 陈伟恩；

【导师】 房贞政；

【作者基本信息】 福州大学 ， 结构工程， 2002， 硕士

【摘要】 钢—混凝土组合结构是今后多高层建筑应用的主要结构形式之一，尤其是采用劲性柱—钢组合梁结构体系，而目前对于这种新型组合结构体系研究工作还不完善。本文主要研究劲性柱—钢梁节点的受力性能，对劲性柱—钢梁节点进行低周反复加载试验研究，同时用ANSYS三维有限元非线性分析软件进行计算机模拟。通过中柱节点和边柱节点的拟静力试验，着重分析了劲性柱—钢梁节点在模拟地震作用下的破坏形态、承载力、延性、滞回特性与应力传递机制，并与钢筋混凝土节点、劲性混凝土节点进行了比较。探讨考虑混凝土、型钢腹板、箍筋共同贡献的劲性柱—钢梁节点极限抗剪承载力计算公式，并就轴压力、翼缘在节点受力过程中的作用进行了分析与评价。更多还原

【Abstract】 Steel-concrete composite structure will be one of main structures used in multi-stories and high buildings in the future, especially the SRC column and steel composite beam structure system. But the research on properties of this structure system is rarely carried out. In this paper, the mechanics behavior of the SRC column and steel beam joints is studied. The tests of the SRC column and steel beam joints under the cyclic reversed loading are carried out, which are analyzed by the ANSYS 3D nonlinear finite element program. In the pseudo static tests of the middle joint and border joint, the failure modes, the carrying capacity, the ductility, the hysteresis loops and the stress transfer mechanism of the SRC column and steel beam joints under seismic loads are researched, which are compared with RC beam-column joints and SRC beam-column joints. An equation to calculate ultimate shear-resistant capacity of SRC column and steel beam joint is discussed, with consideration of the actions of concrete, steel web and horizontal hoop. The effects of axial press and steel wing under loads are also discussed.更多还原