轴压比取值对考虑波纹管组合钢筋浆锚连接预制剪力墙抗剪性能的影响

发布时间：2018-01-04 23:29

本文关键词：轴压比取值对考虑波纹管组合钢筋浆锚连接预制剪力墙抗剪性能的影响　出处：《沈阳建筑大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：目的研究考虑波纹管组合、钢筋约束浆锚连接的预制混凝土剪力墙在低周期反复荷载作用下的抗剪性能.方法通过4片剪力墙构件的拟静力试验,在设计轴压比取值分别为0.2和0.4的试验工况下对剪力墙的破坏模式、承载力、延性和耗能能力等方面进行分析,得到了荷载与位移关系的滞回曲线和骨架曲线.结果 4个试件的破坏模式主要表现为试件边缘竖向钢筋首先受拉屈服,墙体两侧底部混凝土受压破坏;各试件滞回曲线饱满,骨架曲线也基本一致,采用0.4轴压比的剪力墙试件承载力比轴压比为0.2的试件提高了25%,延性系数均大于4,预制剪力墙试件的弹塑性层间位移角大于1/120.结论预制墙体的设计轴压比取值较大者,其内部浆锚钢筋连接仍然保证可靠,在地震作用下墙体的吸能与耗能能力越大.
[Abstract]:Aim to study the shear resistance of precast concrete shear wall with corrugated pipe combination and rebar confined grouting anchor connection under low cycle repeated load. Methods the pseudostatic test of four shear wall members was carried out. The failure mode, bearing capacity, ductility and energy dissipation capacity of the shear wall are analyzed under the test conditions of 0.2 and 0.4 of the design axial compression ratio, respectively. The hysteretic curve and skeleton curve of the relationship between load and displacement are obtained. Results the failure modes of the four specimens are as follows: the vertical reinforcement at the edge of the specimen is first subjected to tensile yield and the concrete at the bottom of both sides of the wall is subjected to compressive failure. The hysteretic curve of each specimen is full and the skeleton curve is basically the same. The bearing capacity of the shear wall specimen with 0.4 axial compression ratio is 25% higher than that of the specimen with 0.2 axial compression ratio, and the ductility coefficient is more than 4. The elastic-plastic interstory displacement angle of prefabricated shear wall specimens is greater than 1 / 120.Conclusion if the design axial compression ratio of prefabricated wall is larger than that of prefabricated wall, the connection of internal grouting anchor steel bar is still reliable. The more energy absorption and energy dissipation capacity of the wall under earthquake action.
【作者单位】：大连理工大学建设工程学部;沈阳建筑大学土木工程学院;辽宁省现代建筑产业工程技术研究中心;
【基金】：国家重点研发计划项目(2016YFC0701402)
【分类号】：TU398.2
【正文快照】： 预制剪力墙是装配式结构中用于抵抗水平荷载作用的重要承重构件之一,它既承受来自外部的剪力和弯矩作用,同时又承受结构自重及上部楼层传递下来的轴力作用,而剪力墙承受一定的轴压力对其抗剪承载力起着有利的作用[1-4].剪力墙承受轴向压力将延迟、抑制墙体表面斜裂缝的出现和

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