无界面钢筋的叠合板式剪力墙受力性能试验研究

发布时间：2018-01-11 10:03

本文关键词：无界面钢筋的叠合板式剪力墙受力性能试验研究　出处：《建筑结构学报》2016年10期 　论文类型：期刊论文

【摘要】：为研究无界面钢筋的叠合板式剪力墙的受力性能,进行了3个试件的拟静力试验,分析了预制混凝土板与现浇层之间的结合面特征,以及边缘纵筋配筋量对墙体压弯承载力、滞回特性、延性及刚度的影响。结果表明:叠合板式剪力墙变形能力良好,位移延性系数超过6.5;预制混凝土板面采用键槽构造措施或粗糙面均能保证后浇与预制混凝土的有效连接,在正常使用阶段,后浇与预制混凝土结合面未出现损伤,相同边缘纵筋的墙体压弯承载力基本相同;采用键槽的连接性能优于粗糙面连接性能,前者后浇与预制混凝土间裂缝的开展宽度和长度明显小于后者,且墙体刚度退化速率减缓;提高墙体的边缘纵筋配筋量可延缓后浇与预制混凝土结合面竖向裂缝的发展,减小结合面破坏区域,改善墙体的受力性能。采用现行规范中的剪力墙压弯承载力计算公式计算叠合板式剪力墙的承载力,与试验结果吻合良好。
[Abstract]:In order to study the mechanical behavior of laminated slab shear wall without interfacial reinforcement, the quasi-static tests of three specimens were carried out, and the characteristics of the joint surface between precast concrete slab and cast-in-situ layer were analyzed. And the influence of the longitudinal reinforcement on the flexural capacity, hysteretic characteristics, ductility and stiffness of the wall. The results show that the deformation capacity of the composite plate shear wall is good, and the displacement ductility coefficient is over 6.5; The prefabricated concrete slab can ensure the effective connection between post-pouring and precast concrete by means of keyway construction or rough surface. In the normal service stage, there is no damage to the post-pouring and precast concrete joint surface. The compressive and bending capacity of the wall with the same edge longitudinal reinforcement is basically the same; The connection performance of keyway is better than that of rough surface. The width and length of crack between post-pouring and precast concrete is obviously smaller than that of the latter, and the degradation rate of wall stiffness is slowed down. Increasing the amount of longitudinal reinforcement on the edge of the wall can delay the development of vertical cracks in the post-pouring and precast concrete joints and reduce the damage area of the joints. In order to improve the mechanical behavior of the wall, the calculation formula of the compression and bending capacity of the shear wall in the current code is used to calculate the bearing capacity of the superimposed plate shear wall, which is in good agreement with the experimental results.
【作者单位】：北京建筑大学土木与交通工程学院;烟台大学土木工程学院;清华大学建筑设计研究院;
【基金】：国家自然科学基金项目(51378450,51508490)
【分类号】：TU398.2
【正文快照】： 0引言研发性能良好的预制混凝土结构体系是建筑工业化的需求。叠合板式剪力墙结构是一种两侧为预制混凝土板,中间浇筑混凝土形成的剪力墙结构体系,是钢筋混凝土剪力墙结构体系由现浇到完全装配的过渡[1]:预制混凝土板在施工阶段为模板,在使用阶段是墙体的组成部分,参与结构受

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