宽肢组合异形柱-钢梁节点抗震性能试验研究

发布时间：2018-04-16 18:54

本文选题：高层钢结构住宅 + 宽肢组合异形柱　；参考：《建筑结构学报》2017年06期

【摘要】：为研究适用于高层钢结构住宅体系的组合异形柱框架结构的翼缘加强型节点的抗震性能,设计了两种不同构造形式的足尺节点试件,即格构式宽肢组合异形柱节点和实腹式宽肢组合异形柱节点,并进行拟静力试验,研究了该类节点的破坏形态、滞回性能、承载能力、梁端转角、延性及耗能能力。试验结果表明:2个节点最终均在加强件端部发生了翼缘开裂而破坏;节点的受弯承载力是梁端全截面塑性承载力的1.10~1.13倍;钢梁转角是梁端总转角的主要组成部分,节点区转角只占梁端总转角的1.0%~1.8%,柱变形转角占9.2%~13.0%;节点的位移延性系数约为2.33~2.38,黏滞阻尼系数约为0.264~0.267。此外,2个节点的承载能力基本相当,格构式宽肢组合异形柱节点的抗震性能指标相对实腹式宽肢组合异形柱节点较好;但与传统翼缘加强型节点相比,其延性和耗能能力略有降低。
[Abstract]:Flange for high-rise steel structure residential system combined special-shaped column frame structure to strengthen the seismic performance of nodes, designed two different structural forms of full-scale joints, namely the lattice combination of broad limb special-shaped column joints and solid combination of broad limb special-shaped column joints, and pseudo static test and the destroy of joint on the hysteretic behavior, bearing capacity, beam angle, ductility and energy dissipation capacity. The experimental results show that the 2 nodes are in the final end of the reinforcing flange crack and failure; node bending capacity is 1.10~1.13 times the total cross section of the beam end plastic bearing force; beam angle is the main part of the total beam angle, joint angle only beam total angle 1.0%~1.8%, angle 9.2%~13.0% column deformation; the displacement ductility coefficient of joints is about 2.33~2.38 and the viscous damping coefficient is about 0.264 ~0.267. in 2 The bearing capacity of each node is basically the same. The seismic performance index of the grid type wide limb combined special-shaped column node is better than that of the solid belly wide limb combined special-shaped column node, but it has a slightly lower ductility and energy dissipation capacity compared with the traditional flange strengthened node.

【作者单位】：中国建筑第八工程局有限公司;同济大学土木工程学院;清华大学土木工程系;清华大学土木工程安全与耐久教育部重点实验室;沈阳建筑大学土木工程学院;
【分类号】：TU352.11;TU398.9

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