高烈度区低配筋多层剪力墙结构的抗震性能分析

发布时间：2018-01-23 14:32

本文关键词： 剪力墙高烈度区低配筋抗震性能　出处：《建筑结构学报》2016年02期 　论文类型：期刊论文

【摘要】：为了研究高烈度区多层剪力墙结构采用比现行规范规定偏低构造配筋的抗震性能和工程应用可能性,针对4个不同平面布置形式的多层剪力墙结构,分别按我国规范设防烈度8度区(0.20g、0.30g)和9度区进行抗震设计,并在规范规定的基础上减少墙身构造钢筋量,形成低配筋多层剪力墙结构。采用Perform-3D程序对12个低配筋多层剪力墙结构模型进行了非线性动力反应分析。结果表明,在罕遇地震作用下,各结构模型的地震反应较小,进入非线性的程度不深,结构的损伤偏小,且更多损伤集中在连梁梁端,而不是在剪力墙墙身。将墙身分布钢筋配筋率与文中低配筋剪力墙相近或比其更低的低配筋剪力墙试件的试验结果与非线性动力分析结果对比后发现,低配筋剪力墙试件的极限位移角远大于非线性动力反应分析中获得的具有84%保证率的结构最大层间位移角需求值,且试件在达到这一层间位移需求值时的损伤非常小。因此,高烈度设防区(8度和9度区)低配筋多层剪力墙结构的抗震性能良好,经合理设计后可在高烈度区应用。
[Abstract]:In order to study the seismic performance and engineering application possibility of multi-story shear wall structure with lower reinforcement than the current code in high intensity region, four multi-story shear wall structures with different plane layout are studied. The seismic design is carried out according to the code of our country, which is 0.20g / 0.30g) and 9C respectively, and the amount of reinforcement in the wall body is reduced on the basis of the code. The nonlinear dynamic response analysis of 12 low reinforcement multi-story shear wall structures is carried out by Perform-3D program. The results show that under the rare earthquake action, the nonlinear dynamic response of the multi-story shear wall structure with low reinforcement is analyzed. The seismic response of each structural model is small, the degree of nonlinearity is not deep, the damage of the structure is small, and more damage is concentrated at the end of the connecting beam. Instead of the shear wall body, it is found that the distribution of reinforcement ratio of the wall body is similar to or lower than that of the low reinforcement shear wall in the paper, and the experimental results of the specimens with low reinforcement are compared with the results of nonlinear dynamic analysis. The ultimate displacement angle of the specimens with low reinforcement shear wall is much larger than the maximum interstory displacement angle of the structure with 84% guarantee rate obtained in the nonlinear dynamic response analysis. And the damage of the specimen is very small when it reaches the requirement value of the interstory displacement. Therefore, the seismic performance of the multi-story shear wall structure with low reinforcement is good in the high intensity fortification zone (8 degree and 9 degree). After reasonable design, it can be used in high intensity area.
【作者单位】：中国建筑科学研究院;重庆大学山地城镇建设与新技术教育部重点实验室;
【基金】：中国建筑科学研究院自筹基金课题(20070106330730011) 重庆市建委科研项目(城科字2008第70号)
【分类号】：TU398.2;TU352.11
【正文快照】： 0引言多层混凝土剪力墙结构的抗侧移刚度通常很大,其多遇地震弹性变形远远小于规范规定的限值。可以预测,即使在高烈度区(8度和9度区)罕遇地震作用下,这类结构进入非线性的程度也不会很明显。由于现行结构设计规范[1-3]中关于混凝土剪力墙的设计规定主要是针对高层剪力墙结构

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