带外加强环不等高梁-钢管混凝土柱组合节点抗震性能试验研究

发布时间：2018-02-19 21:06

本文关键词： 钢管混凝土节点变截面外加强环循环加载试验单调加载试验抗震性能　出处：《建筑结构学报》2017年05期 　论文类型：期刊论文

【摘要】：对4个带外加强环不等高梁钢管混凝土柱节点试件进行了循环加载和单调加载试验,试件主要变化参数为节点两侧梁高度差,取值为0、75、150 mm。为了研究节点域的受剪承载力,对试件按"强构件,弱节点"进行设计。对于所设计的4个节点试件,其破坏分为整个节点域剪切破坏和部分节点域剪切破坏。试验结果表明:加载方式对试件节点域剪切承载力影响不大;节点试件在正反两个方向加载形成不同的破坏模式,并且在反向荷载作用下其承载力略高于其在正向荷载作用下的承载力;节点两侧梁高度差对节点域破坏形式和承载力影响显著;在整个加载过程中,所有试件节点均未出现开裂;该类节点具有很好的变形能力和稳定的耗能能力,但随着两侧梁高度差的增加,耗能能力逐渐降低。
[Abstract]:The cyclic loading and monotonic loading tests were carried out on four specimens of concrete-filled steel tubular column joints with different reinforcement rings. The main variation parameters of the specimens were the difference of beam height between the two sides of the joints, and the values were 0 ~ 75 ~ 150mm. in order to study the shear capacity of the joints, The test pieces are designed according to "strong members, weak joints". For the four node specimens designed, The test results show that the loading mode has little effect on the shear bearing capacity of the specimens in the joint domain, and different failure modes are formed when the joint specimens are loaded in both positive and negative directions. And the bearing capacity under the reverse load is slightly higher than that under the positive load; the height difference between the two sides of the joint has a significant impact on the failure form and bearing capacity of the joint domain; during the whole loading process, All the joints have no cracking, and the joints have good deformation ability and stable energy dissipation ability, but with the increase of the height difference between the two sides of the beam, the energy dissipation capacity decreases gradually.
【作者单位】：青岛理工大学土木工程学院;
【基金】：山东省中青年科学家科研奖励基金项目(ZR2016EEB38) 山东省博士后创新项目(201601017) 青岛市应用研究项目(2016194)
【分类号】：TU398.9

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