半刚性框架-密肋框格防屈曲低屈服点钢板墙抗震性能试验研究

发布时间：2018-03-22 07:33

本文选题：半刚性框架　切入点：密肋框格防屈曲　出处：《建筑结构学报》2015年11期 　论文类型：期刊论文

【摘要】：为研究半刚性框架-密肋框格防屈曲低屈服点钢板墙结构的抗震性能,对一榀1/3缩尺的结构试件进行拟静力试验,对其滞回性能、承载力、延性、刚度、耗能和节点转动性能等进行分析。结果表明:试件最终呈面内弯剪破坏,结构屈服、破坏顺序为内填钢板面内受剪屈服、区格屈曲直至撕裂,边缘构件进入屈服并最终在框架梁端与柱脚形成塑性铰,结构的破坏机理符合"强框架、弱墙板"、"强柱弱梁"的设计理念;内填钢板与外框架形成了有效的两道抗震设防防线,抗震性能优良;试件具有稳定的承载力与优异的塑性变形能力;结构整体刚度好,初始侧向刚度大;密肋框格的设置改善了内填钢板的受力性能,实现了防屈曲的目标,试件滞回曲线饱满呈梭形,具有良好的耗能能力;位移加载后期节点角钢虽然进入塑性工作状态,但在内填钢板"衬板"作用的加强下,未发生明显损坏,且试件的整体承载力保持稳定。
[Abstract]:In order to study the seismic behavior of a semi-rigid frame-ribbed frame with low buckling and low yield point steel plate wall structure, a 1 / 3 scale structural specimen was tested by pseudostatic test. The hysteretic behavior, bearing capacity, ductility, stiffness of the specimen were tested. The results show that the specimens are subjected to in-plane bending shear failure and structural yield. The order of failure is the in-plane shear yield of the inner-filled steel plate, the buckling of the zone lattice and the tearing of the specimen. The edge members enter into yield and finally form plastic hinge at the end of the frame beam and column foot. The failure mechanism of the structure accords with the design idea of "strong frame, weak wall plate" and "strong column weak beam", and the inner filled steel plate and the outer frame form two effective seismic fortification lines. Good seismic performance; the specimen has stable bearing capacity and excellent plastic deformation capacity; the overall stiffness of the structure is good, the initial lateral stiffness is large; the setting of multi-ribbed frame lattice improves the mechanical performance of the steel plate, and achieves the goal of anti-buckling. The hysteretic curve of the specimen is full and fusiform, and has good energy dissipation capacity. Although the angle steel at the end of the displacement loading enters into the plastic working state, it is not obviously damaged by the strengthening of the "lining" action of the inner filled steel plate. And the overall bearing capacity of the specimen remains stable.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51178381)
【分类号】：TU398.9;TU352.11

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