斜筋对大洞口率单排配筋双肢墙的抗震性能影响研究

发布时间：2018-01-03 07:00

本文关键词：斜筋对大洞口率单排配筋双肢墙的抗震性能影响研究　出处：《土木工程学报》2016年S2期 　论文类型：期刊论文

【摘要】：单排配筋混凝土剪力墙易在基底施工缝处发生剪切滑移,影响其抗震性能。为了解在剪力墙底部配置斜向钢筋对大洞口率单排配筋混凝土双肢墙的抗震性能影响,对1个底部配置斜筋的双肢墙和1个未配置斜筋的双肢墙进行了低周反复荷载试验,并用ABAQUS有限元软件进行了数值模拟分析,研究了试验模型的破坏特征、滞回性能、承载力、延性、刚度和耗能能力。结果表明:对于洞口率较大的单排配筋混凝土双肢墙,在保持墙肢总配筋量不变条件下,墙肢底部适当配置斜向钢筋可限制其剪切变形发展,避免墙肢底部施工缝处发生剪切滑移现象,对双肢墙的延性和耗能能力有一定的提高作用。
[Abstract]:Single row reinforced concrete shear wall is prone to shear slip at the joint of the base construction. In order to understand the effect of inclined reinforcement at the bottom of shear wall on the seismic behavior of single row reinforced concrete double-legged wall with large hole rate. The low cycle repeated load tests were carried out on a double-leg wall with inclined reinforcement at the bottom and a double-leg wall without a inclined reinforcement, and the numerical simulation was carried out with ABAQUS finite element software. The failure characteristics, hysteretic performance, bearing capacity, ductility, stiffness and energy dissipation capacity of the test model are studied. Under the condition that the total reinforcement quantity of the wall limb is kept constant, the shear deformation development of the wall limb can be restricted by the proper arrangement of oblique reinforcement at the bottom of the wall limb, and the phenomenon of shear slip at the construction joint at the bottom of the wall limb can be avoided. It can improve the ductility and energy dissipation ability of double-limb wall to some extent.
【作者单位】：北京工业大学城市与工程安全减灾教育部重点实验室;
【基金】：国家自然科学基金(51378029),国家自然科学基金创新性研究群体(51421005)
【分类号】：TU352.11
【正文快照】： 引言单排配筋混凝土剪力墙因其具有良好抗震性能、造价低、施工简便等优势[1-4],可应用于多层住宅建筑结构。为避免单排配筋混凝土剪力墙基底出现剪切滑移现象,可采用在混凝土剪力墙底部配置斜向钢筋的构造措施[5-7],为此,笔者开展了较系统的带斜筋单排配筋混凝土剪力墙抗震性

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