配置斜筋单排配筋混凝土双肢剪力墙抗震性能试验研究

发布时间：2018-01-11 05:15

本文关键词：配置斜筋单排配筋混凝土双肢剪力墙抗震性能试验研究　出处：《建筑结构学报》2016年05期 　论文类型：期刊论文

【摘要】：在水平地震作用下,低轴压比的单排配筋混凝土剪力墙易在底部施工缝处产生剪切滑移现象,影响其耗能能力,在剪力墙底部配置斜向钢筋可以较好地避免此现象发生。为研究配置斜筋单排配筋混凝土双肢剪力墙的抗震性能,对3个1/2缩尺的单排配筋混凝土双肢剪力墙进行了拟静力试验,研究了在墙肢及连梁中配置斜筋对混凝土双肢剪力墙破坏机制与抗震性能的影响。对比分析了配置斜筋双肢墙与未配置斜筋双肢墙的破坏形态、滞回特性、承载力、延性、刚度和耗能能力。试验结果表明:在墙肢配筋量相同的条件下,在墙肢底部设置适量的斜筋,可提高双肢墙的延性和耗能能力,并对其破坏机制产生影响;在墙肢分布钢筋量不变条件下,在墙肢底部和连梁中增设斜筋,可明显提高双肢墙的延性和耗能能力。
[Abstract]:Under the action of horizontal earthquake, single row reinforced concrete shear wall with low axial compression ratio is easy to produce shear slip phenomenon at the bottom of construction joint, which affects its energy dissipation ability. This phenomenon can be avoided by placing oblique reinforcement at the bottom of the shear wall. In order to study the seismic behavior of double-leg shear wall with single row reinforced concrete with inclined reinforcement. The pseudostatic test of three single-row reinforced concrete double-leg shear walls with 1/2 scale was carried out. The influence of inclined reinforcement on the failure mechanism and seismic performance of concrete double-leg shear wall is studied. The failure patterns and hysteretic characteristics of double-leg wall with and without inclined reinforcement are compared and analyzed. Bearing capacity ductility stiffness and energy dissipation capacity. The experimental results show that the ductility and energy dissipation capacity of double-legged wall can be improved by setting a proper amount of inclined reinforcement at the bottom of the wall limb under the condition of the same reinforcement quantity of the wall limb. And it has an influence on the destruction mechanism; The ductility and energy dissipation capacity of the two-leg wall can be improved obviously by adding oblique reinforcement to the bottom of the wall and the connecting beam under the condition of constant reinforcement distribution of the wall limb.
【作者单位】：北京工业大学城市与工程安全减灾省部共建教育部重点实验室;
【基金】：国家自然科学基金项目(51378029);国家自然科学基金创新研究群体项目(51421005)
【分类号】：TU352.11
【正文快照】： 0引言在钢筋混凝土剪力墙中开设较大洞口会对其承载能力、变形能力及破坏形态产生影响[1]。针对高层建筑结构中的开洞双肢剪力墙,国内外学者进行了较系统地研究,如丁永君等[2]进行了高强钢筋高强混凝土双连梁联肢剪力墙的抗震性能研究,结果表明双连梁联肢剪力墙能有效降低连梁

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