装配式钢结构住宅外围护墙板L型节点性能试验研究  

Experimental Research on Mechanical Properties of L-Shaped Joints Between Peripheral Wall Panels of Prefabricated Steel Structure Residences

作　　者：袁维光 赵华[1] 高涌涛[1] 王俊 刘宜丰[3] YUAN Weiguang;ZHAO Hua;GAO Yongtao;WANG Jun;LIU Yifeng(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China;School of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China;China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610042,China)

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [2]成都理工大学环境与土木工程学院,成都610059 [3]中国建筑西南设计研究院有限公司,成都610042

出　　处：《工业建筑》2024年第9期125-132,共8页Industrial Construction

基　　金：四川省科技厅重点研发项目(2020YFS0061);四川省科技厅面上项目(2019YJ0466);自然资源部丘陵山地地质灾害防治重点实验室自主课题(KLGHZ202101)。

摘　　要：作为装配式钢结构住宅罕遇地震对策研究的一部分,提出罕遇地震下实现外围护墙板体系可快速更换的恢复功能的理念,基于对墙板与主体结构传统连接节点技术进行优化和改进,提出了一种角钢垂直于轻质墙板放置的L型节点。设计了6个蒸压加气混凝土墙板(ALC墙板)的连接节点试件,对其进行低周往复水平荷载试验,研究连接节点的变形性能和ALC墙板的破坏形态,探讨连接节点角钢厚度和墙板下端约束情况对外围护墙板体系的滞回特性、变形能力、刚度退化、节点角钢应变、耗能能力的影响。研究结果表明:L型节点角钢厚度越小,变形能力越大,耗能越好,墙板损伤小;增强墙板下端约束,外围护墙板体系的整体刚度和承载力增大,残余变形小;位移角达2%时,L型节点具有足够的稳定性,墙板无明显损伤;位移角大于2%时,L型节点具有良好的变形性能,能够使外围护墙板适应较大的结构变形。As a part of the research on the countermeasures of prefabricated steel structure residences under rarely occurred earthquakes,the concept of realizing rapid replaceable resilient function of peripheral wall panel system under rarely occurred earthquakes was put forward,based on the traditional connection technique between wallboard and main structure was optimized and improved,and an L-shaped joint with angle steel perpendicular to light wall panel was proposed,six specimens of autoclaved aerated concrete wall panels(ALC)were designed.Through the quasi-static load test,the deformation behavior of the new connection and the failure mode of ALC were studied.The effects of thickness of angle steels at connections and restraint at the lower end of wall panels on the hysteretic characteristics,deformation capacity,stiffness degradation,angle steel strain and energy dissipation capacity of peripheral wall panels were discussed.The test results showed that the smaller thickness of angle steel of L-shaped joints,the greater the deformation,the better the energy consumption and the less the damage of wall panels;the lower end restraint of the wall panels was strengthened,the overall stiffness and bearing capacity of the peripheral wall panels were increased,small residual deformation;when the drift reached 2%,the L-shaped node had sufficient stability and the wall panel had no obvious damage;when the drift exceeded 2%,the L-shaped joint showed a good deformation performance,which could make the peripheral wall plate adapt to large structural deformation.

关 键 词：蒸压加气混凝土墙板(ALC墙板) L型节点 抗震性能 

分 类 号：TU391[建筑科学—结构工程]