自攻钉集块连接混凝土复合剪力墙抗震性能试验
Experimental Study on Seismic Performance of Concrete Composite Shear Wall with Self-Tapping Nail Connection
曹万林 1谢晖 1杨兆源 1董宏英 1刘亦斌1
作者信息
- 1. 北京工业大学城市建设学部,北京 100124
- 折叠
摘要
提出了适用于装配式混凝土复合剪力墙结构的自攻钉集块连接构造,为研究自攻钉集块连接混凝土复合剪力墙的抗震性能,设计制作了3个剪跨比为1.39的足尺剪力墙试件,进行了低周反复荷载试验,主要变量包括自攻钉集块连接构造、自攻钉集块与后浇条带组合连接构造以及L形边框构造柱.分析了试件破坏模式、承载力、滞回特性、刚度及退化、变形能力、耗能性能和应变特征等.结果表明:自攻钉集块连接构造装配便捷,受力性能可靠;采用自攻钉集块与后浇条带组合连接构造试件的承载力及刚度相比自攻钉集块连接构造分别提高了8.54%和6.03%;设置L形边框构造柱的试件承载力、刚度及耗能分别提高了67.48%、129.33%和277.93%.自攻钉集块连接复合剪力墙具有良好的抗震性能,满足装配式低层住宅混凝土复合剪力墙结构的抗震设计要求,可用于实际工程.
Abstract
The self-tapping nails connecting construction for prefabricated composite shear wall was proposed in this research.Three full-scale composite shear wall specimens were designed and tested by low cyclic experiment to study the seismic behavior of concrete composite shear wall with self-tapping nails connection.The shear span ratio of specimens was 1.39.The experimental variables included self-tapping nails connection,self-tapping nails and post-pouring belt connection,and L-shaped structural column.The failure modes,bearing capacity,hysteretic characteristic,stiffness degradation,energy consumption,and strain response were analyzed and discussed.The experimental results showed that the self-tapping nails connection had the advantages of good mechanical behavior and convenient installation.Compared with the specimen with self-tapping nails connection,the ultimate bearing capacity and initial stiffness of the specimen with self-tapping nails and post-pouring belt connection increased by 8.54%and 6.03%,respectively.Compared with the specimen without L-shaped structural column,the ultimate bearing capacity,initial stiffness and energy consumption of the specimen with L-shaped structural column increased by 67.48%,129.33%,and 277.93%,respectively.The concrete composite shear wall with self-tapping nail connection has good seismic performance that meets the seismic design requirement of prefabricated concrete composite shear wall residence building and it can be used in practice.
关键词
装配式混凝土结构/复合剪力墙/自攻钉集块连接/抗震性能/试验研究Key words
prefabricated concrete structure/composite shear wall/self-tapping nail connection/seismic performance/experimental study引用本文复制引用
基金项目
国家自然科学基金面上项目(52378116)
出版年
2024
国家科技期刊平台
NSTL
万方数据