多层钢板剪力墙自复位结构性能研究

发布时间：2018-01-09 04:09

本文关键词：多层钢板剪力墙自复位结构性能研究　出处：《苏州科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：蝴蝶形钢板剪力墙自复位结构是近几年发展起来的一种新型抗侧力结构,它将梁柱自复位节点技术和蝴蝶形钢板剪力墙技术结合,使用常规钢材和预应力钢绞线,具有优越的抗震性能,且能有效控制结构的残余变形,降低震后修复成本,越来越受到国内外学者的关注。为了进一步明确结构的性能,本文先从结构的性能目标出发,阐述性能目标的设定,接着,从理论上分析了结构的传力路径和破坏机理,介绍结构刚度计算和理论设计方法。运用经验证有效的有限元软件对钢板高厚比、高宽比、柱刚度系数、初始预拉力、框架跨高比和钢板竖向错位布置展开研究,从耗能、能量耗散系数、刚度退化、延性系数和自复位性能等方面系统分析了各参数对结构性能的影响。得到了一些有益的结论:(1)蝴蝶形钢板剪力墙自复位结构在当前结构抗震领域和新型结构中具有代表性和前瞻性。(2)运用有限元软件数值模拟蝴蝶形钢板剪力墙自复位结构具有可行性和有效性。从理论上分析蝴蝶形钢板剪力墙自复位结构的耗能、破坏机理和推导结构的刚度计算方法,对优化蝴蝶形钢板剪力墙自复位结构具有指导意义。(3)设计合理的蝴蝶形钢板剪力墙自复位结构抗震性能优越,残余变形可控。设计时钢板高厚比宜控制在300左右;高宽比控制在1.25左右;框架柱应保证在大震作用下保持弹性,但框架柱过大不利于发挥结构的整体抗震性能;预应力钢绞线初始预拉力不宜过大,可按理论公式估算,并使自复位节点在小震作用下脱开。减小框架的跨高比将小幅提高结构的强度,结构刚度、延性和自复位性能趋同。蝴蝶形钢板错位布置时,结构滞回性能稳定,有利于满足建筑空间布置的要求,钢板同向错位布置和反向错位布置各有利弊,须加强构造。
[Abstract]:The butterfly shaped steel plate shear wall self centering structure is a new type of anti lateral force structure developed in recent years, it will be Liang Zhu self centering connection technology and the butterfly shaped steel plate shear wall technology, the use of conventional steel and prestressed steel strand, with excellent seismic performance, and can effectively control the residual deformation of the structure, reduce the earthquake repair costs, more and more attention of domestic and foreign scholars. In order to further clarify the performance of the structure, this paper first from the performance goal structure of this performance target setting, then the force transmission path and the failure mechanism of structure is analyzed theoretically, the structure stiffness calculation theory and design method. By using finite element method software validation of plate height to thickness ratio, aspect ratio, column stiffness coefficient, initial prestress, frame span and plate vertical dislocation arrangement study, from energy consumption, the energy dissipation coefficient, stiffness of the back , ductility coefficient and self reduction performance, analyzed the influence of parameters on structural properties. Some useful conclusions are obtained: (1) the butterfly shaped steel plate shear wall self resetting structure in the current seismic field and new structure of representative and prospective. (2) by using the finite element numerical simulation software the butterfly shaped steel plate shear wall self centering structure is feasible and effective. Energy consumption analysis of the butterfly shaped steel plate shear wall self centering structure theoretically, damage stiffness calculation method and mechanism of derivation structure, optimization of the butterfly shaped steel plate shear wall structure with self reset significance. (3) the butterfly shaped steel plate shear wall design since the seismic reduction structure of superior performance, residual deformation control. Design of plate height to thickness ratio should be controlled at around 300; the ratio of height to width is controlled at about 1.25; the frame column should ensure to maintain flexibility in the large earthquake, but the box Frame column is too large is not conducive to the overall structure of the seismic performance of prestressed steel strand; initial tensile force should not be too large, according to the theoretical formula to estimate, and from self centering connection under small earthquakes. The decrease of the span depth ratio framework will be slightly improve the structural strength, structural stiffness, ductility and self reduction performance of convergence the butterfly shaped plate. The dislocation arrangement, structure stable hysteretic performance, to meet the requirements of architectural space layout, the same plate dislocation arrangement and reverse dislocation arrangement have advantages and disadvantages, to strengthen the structure.

【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU398.2

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