预压弹簧自恢复耗能支撑子结构抗震性能研究

发布时间：2018-01-19 02:01

本文关键词： 自恢复耗能支撑铰接刚接数值模拟抗震性能　出处：《建筑结构学报》2017年06期 　论文类型：期刊论文

【摘要】：对预压弹簧自恢复耗能支撑进行了低周往复加载试验及数值模拟分析,结果表明,二者滞回曲线吻合较好,自恢复耗能支撑具有稳定的旗形滞回特性、良好的耗能能力和复位能力。对自恢复耗能支撑分别通过刚接和铰接与结构组成的支撑子结构进行了抗震性能数值模拟分析。结果表明:铰接支撑子结构具有更好延性、更稳定旗形滞回性能、更高承载力,对自身残余变形具有更好的控制能力;刚接支撑受力性能受连接板传递弯矩影响较大,铰接支撑耗能能力是刚接支撑的1.4~2.3倍,对结构的耗能贡献比刚接支撑提高了34%~40%,铰接支撑最大残余变形为刚接支撑的25.5%,基本消除了残余变形。
[Abstract]:The spring since the restoration of energy dissipation are analyzed, the low cyclic loading test and numerical results show that the two hysteretic curves agree well with self recovery energy dissipation flag lag stable return characteristics, good energy dissipation capacity and reduction ability. For self recovery energy dissipation respectively by sub structure rigid support and hinged with the structure is simulated and analyzed. The results show that the seismic performance of numerical hinged support sub structure has better ductility, more stable flaglike hysteretic performance, higher bearing capacity, deformation control has better ability of its residual; rigid braced by connecting plate moment transfer influence, hinged support the energy dissipation capacity is 1.4~2.3 times of rigid support, the structure of energy consumption with rigid support than improved 34%~40%, the maximum residual deformation of hinged support as rigid support 25.5%, basically eliminate the residual deformation.

【作者单位】：北京交通大学土木建筑工程学院;
【基金】：国家重点研发计划项目(2016YFC0701101) 国家自然科学基金项目(51322806,51578058)
【分类号】：TU352.11
【正文快照】： 0引言地震作用使结构产生过大的残余变形,严重影响结构的正常使用,自恢复结构能够减小或者消除结构的残余变形,可以实现结构快速恢复的目标[1]。近年来,国内外学者对摇摆墙[2-3]、可替换结构构件[4-5]、自复位结构[6-8]等功能可恢复结构进行了研究,如:Roke等[9]研究了基底摇摆

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