钢管束混凝土组合墙-梁翼缘加强型节点抗震性能试验

发布时间：2018-04-06 01:23

本文选题：钢管束混凝土(BLC-C)组合墙　切入点：墙梁节点　出处：《天津大学学报(自然科学与工程技术版)》2016年S1期

【摘要】：对钢管束混凝土组合墙-梁刚接节点抗震性能进行研究,设计1个肋板型节点和3个翼缘加强型端板节点试件,进行低周反复荷载试验.考察翼缘与墙体是否焊接对肋板型节点的影响和翼缘补强及端板厚度对端板型节点的影响,研究节点的破坏形态、极限承载力、滞回性能、延性、耗能能力等.研究结果表明,肋板型节点和端板型节点都展现了很好的承载能力和抗震性能;肋板型节点因翼缘与墙体未进行焊接,虽延性有所提高但降低了其承载力,削弱了其抗震性能;端板型节点的承载力和抗震性能随着端板厚度的增加而增强,端板厚度对节点有较大影响;端板型节点在梁翼缘增加了贴板后,对极限承载力、延性、刚度等均有一定提高,但耗能能力有微小下降,翼缘加强后在梁翼缘可以有效地形成塑性铰,达到"强节点,弱构件"的抗震设计要求.
[Abstract]:The seismic behavior of concrete-filled steel tube (CFST) composite wall-beam-rigid joint is studied. One ribbed plate joint and three flange reinforced end-plate joints are designed and tested under low cycle cyclic loading.The influence of flange and wall welding on ribbed plate joint and the effect of flange reinforcement and thickness of end plate on end-plate joint were investigated. The failure mode, ultimate bearing capacity, hysteretic performance, ductility and energy dissipation capacity of joints were studied.The results show that both the ribbed joints and the end-plate joints have good bearing capacity and seismic performance, and the stiff-plate joints have improved ductility but reduced their bearing capacity and weakened their seismic performance because the flange and wall were not welded.The ultimate bearing capacity and seismic performance of end-plate joints increase with the thickness of end-plate, and the thickness of end-plate has a great influence on the joints, and the ultimate bearing capacity, ductility, stiffness and so on of end-plate joints are improved when the flange of beam flange increases, and the ultimate bearing capacity, ductility and stiffness of end-plate joints are increased with the increase of end-plate thickness.However, the energy dissipation capacity is slightly reduced, and the plastic hinge can be effectively formed at the beam flange after the flange is strengthened, which can meet the seismic design requirements of "strong joints and weak members".
【作者单位】：天津大学建筑工程学院;杭萧钢构股份有限公司;
【基金】：国家自然科学基金资助项目(61272264)
【分类号】：TU398.9;TU352.11

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