小剪跨比格构式混凝土墙体抗震性能试验  

Experimental study on seismic behavior of concrete grillage walls with different shear span ratio

作　　者：周静海[1] 王鹏里[2] 孟宪宏[2] 朱静雯[2] 侯延泽[2] 张志伟[2] 

机构地区：[1]沈阳建筑大学节能研究院,辽宁沈阳110168 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《地震工程与工程振动》2011年第3期127-133,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家科技支撑计划子课题(2008BAK51B06-07)

摘　　要：文章旨在研究不同剪跨比的格构式混凝土墙体抗震性能。将生产车间预制成EPS保温模块拼接成墙体模板,在横向和纵向孔洞中分别布置钢筋,然后在孔内浇筑自密实混凝土,形成＂EPS新型节能＂格构式混凝土墙体,然后对6个参数不同的试件进行低周反复水平荷载作用的试验。结果,墙体破坏形态为：首先墙体相邻格构柱间的连梁出现环状裂缝和＂X＂型裂缝,裂缝处混凝土逐渐被压碎,随后墙体格构柱混凝土出现斜向裂缝,逐渐贯通,最终试件破坏。试验证明,格构式混凝土墙的受剪承载力可按现行规范剪力墙的受剪承载力公式（扣除孔洞的截面面积）计算;墙体延性系数在2~4之间,极限位移角较大;随着剪跨比的增大,加强边柱对承载力的提高效果减弱,墙体的侧向刚度和极限承载力下降,但塑性变形能力增强。In the research of the seismic behavior of concrete grillage walls with different shear span ratios.we composed the wall with the EPS module,which was prefabricated in factory,and then provided the reinforcement in vertical and horizontal hole respectively,poured the self-compacting concrete in the holes,so formed the EPS concrete grillage wall.Six concrete grillage walls with different shear span ratios were tested under vertical load and cyclic lateral load.The end wall of the central cross beam was cracked and the ＂X＂-type cracks appeared in most of the core region and finally the walt was crushed and failed.The shear strength of the concrete grillage walls can be calculated by the current code formula for reinforced concrete shear wall.The displacement ductility ratio was between 2～4,the ultimate displacement angle was large;Increasing with shear span ratios,the effect of improving bearing capacity by reinforcing side columns will be weakened,lateral rigidity and ultimate bearing capacity of the walls lost,but the ability of plastic deformation can be improved.

关 键 词：剪跨比 混凝土墙 延性 抗震性能 

分 类 号：TU375[建筑科学—结构工程]