摘要
以由格构冷弯薄壁轻钢框架和加气混凝土砌块填充墙共同构成的组合墙体为研究对象完成了组合墙体、单纯轻钢框架和单纯填充墙体3个试件的抗侧力试验,观察各试件在水平荷载作用下的变形过程和破坏形式,得到3个试件的抗侧极限承载力,并采用简化方法进行分析和对比。结果表明,单纯格构轻钢框架水平抗侧承载力和刚度均较低,而单纯填充墙体尽管初始水平抗侧刚度大,但墙体没有延性,且其抗侧极限承载力极低。组合墙体的水平抗侧刚度比单纯轻钢框架高得多,且其抗侧极限承载力远远大于格构轻钢框架与单纯填充墙体的极限承载力之和。组合墙体和单纯填充墙在水平荷载作用下墙体的破坏形式均为对角线上的斜裂缝内外贯通。三支杆模型适合于组合墙体抗侧极限承载力的计算。
This paper conducted three experiments on lateral resistance performance of light gauged steel frame structure in filled with aerated concrete block wall, light steel frame and aerated concrete block wall. The whole deforming processes and failure modes of the three specimens were observed. The lateral ultimate bearing capacities were gained, analyzed and compared with the results of a simplified calculation method. The main conclusions are as follows： firstly, the horizontal lateral bearing capacity and stiffness of light steel frame are small. The ductility and horizontal lateral bearing capacity of aerated concrete block wall are smallest although its initial stiffness is in a big level. Secondly, the horizontal lateral bearing stiffness of composite wall is much bigger than the light steel frame, and its lateral ultimate bearing capacity is much bigger than the adding of the ultimate bearing capacities of light steel frame and aerated concrete block wall. Thirdly, the failure modes of composite wall and the block filled wall under horizontal loading are the diagonal cracks link on internal and external. Finally, Three-strut model can be applied to the calculation of the lateral ultimate bearing capacity of composite wall.
出处
《武汉理工大学学报》
CAS
北大核心
2016年第6期66-72,共7页
Journal of Wuhan University of Technology
基金
湖北省科技厅项目(2014BAA122)
2015湖北省建设科技项目(湖北山区轻钢轻砌块组合结构农房关键技术研究)
关键词
格构轻钢框架
加气混凝土砌块填充墙
组合墙体
抗侧力试验
极限承载力
light gauged steel frame
aerated concrete block wall
composite wall
lateral resistant test
lateral ultimate bearing capacity
