超高层支撑钢框架结构改建和耗能减震加固设计与试验验证

发布时间：2018-01-20 06:07

本文关键词： 支撑钢框架梁端侧板补强屈曲约束消能支撑拟静力试验减震加固设计　出处：《建筑结构学报》2014年06期 　论文类型：期刊论文

【摘要】：针对一座超高层支撑钢框架结构建筑的改建工程,进行耗能减震加固设计,其中针对其梁柱连接提出梁端侧板补强的方案,针对提升结构整体抗震性能提出增设屈曲约束支撑的方案,并进行梁柱连接补强试验以及屈曲约束支撑构件性能试验。对改建前现场取样所得两组梁柱连接进行的反复加载试验结果显示,未补强梁柱连接试件在加载至AISC(2005)规定的层间位移角限值0.04 rad前断裂破坏,而补强连接试件的变形能力较好,均达到并超过了AISC(2005)规定的层间位移角限值0.04 rad的要求,且未发生梁柱连接焊缝断裂。屈曲约束支撑构件性能试验结果显示了其稳定良好的耗能减震能力。整体结构的有限元弹性分析表明,在地震及风荷载作用下,结构楼层的侧向位移满足台湾地区抗震及抗风规范的要求。根据试验及分析结果提出的加固设计方案,可供工程界有关既有高层建筑加固设计参考。
[Abstract]:In view of the reconstruction of a super-high-rise steel frame structure building, the design of energy dissipation vibration absorption and reinforcement is carried out, among which, the reinforcement scheme of beam end side plate is put forward for its Liang Zhu connection. According to the overall seismic behavior of the hoisting structure, the scheme of adding buckling restrained braces is put forward. The performance tests of Liang Zhu connection and buckling restrained bracing members were also carried out. The results of repeated loading tests obtained from two groups of Liang Zhu connections before reconstruction showed that. The specimens with unreinforced Liang Zhu connection were fractured before loading to the limit of 0.04 rad of interlayer displacement angle, but the deformation capacity of the reinforced specimens was better. All of them meet and exceed the requirement of 0.04 rad. And there is no fracture of Liang Zhu connection weld. The performance test results of buckling restrained bracing member show its stable and good energy dissipation ability. The finite element elastic analysis of the whole structure shows that under the action of earthquake and wind load. The lateral displacement of the structure floor meets the requirements of the seismic and wind-resistant codes in Taiwan. The reinforcement design scheme based on the test and analysis results can be used as a reference for the reinforcement design of the existing high-rise buildings in the engineering field.
【作者单位】：同济大学土木工程学院;台湾地震工程研究中心;台湾大学土木工程学系;
【分类号】：TU391
【正文快照】： 1工程概况本工程位于高雄市,原设计为饭店建筑,为地上34层、地下5层的支撑钢框架结构[1-2],原土建工程起始于1993年6月,后于1996年6月停工至今已十余年。由于该建筑用途由饭店改为集合住宅,结构的重力荷载和需考虑的活荷载都有改变。原结构依1989年版《台湾建筑技术规则》设计

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