摘要
为分析轻质填充墙对装配式钢框架抗震性能的影响,开展了3榀1/2缩尺的2层1跨装配式钢框架的低周往复加载试验研究。通过对比有轻质填充墙及无轻质填充墙试件的受力过程,得到了采用可变梁高梁柱节点的装配式钢框架的受力特点和失效模式,分析了蒸压加气混凝土(ALC)填充墙板和轻钢龙骨纸面石膏板填充墙(LSF干式墙)对装配式钢框架的滞回性能、刚度退化以及耗能能力的影响。结果表明:由可变梁高梁柱节点拼装而成的钢框架具有良好的延性以及足够的抗侧刚度和承载能力;ALC墙板可延缓钢框架的失效,并提高其初始刚度、峰值荷载以及耗能能力,但LSF干式墙板对钢框架力学性能的加强作用不明显。采用数值建模的方法对试验进行了模拟,其结果与试验结果吻合较好。
In order to study the influence of lightweight infill walls on the seismic performance of fabricated frames,a low cyclic loading experimental research on three 1 /2-scale,two-story and single-bay fabricated frames,one of which was without infill walls and the others were with lightweight infill walls,were conducted. By comparing the response of the three assemblies,the mechanical features and failure patterns of the fabricated frames with bolted height adjustable steel beam-to-column connections（ BHA connections） were investigated. The effect of autoclaved aerated concrete infill panels（ ALC panels） and light steel joists with gypsum panels（ LSF panels） on the hysteretic properties,stiffness deterioration and energy dissipation of the fabricated frames were also studied. The results show that the steel frames assembled by BHA connections can exhibit a good ductility and provide sufficient stiffness and load carrying capacity during tests and ALC panels can postpone the failure of steel frames and increase their initial stiffness,peak loads and energy dissipation capacity,while the LSF panels have a negligible strengthening effect on the mechanical performance of steel frames. The results provided by the proposed simulating method also show a good agreement with experimental data.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2015年第8期9-15,共7页
Journal of Building Structures
基金
国家自然科学基金项目(51378147
51278160)
关键词
装配式钢框架
可变梁高装配式梁柱节点
轻质填充墙
蒸压加气混凝土
轻钢龙骨
滞回性能
fabricated steel frame
bolted height adjustable steel beam-to-column connection
lightweight infill wall
autoclaved aerated concrete
light steel joist
hysteretic property
