摘要
为了研究单斜无粘结内藏钢板支撑剪力墙中,墙板为限制支撑整体失稳所需的约束宽度,通过有限元分析,考察了构造参数的变化对墙板约束宽度的影响。这些参数包括混凝土墙板厚度,钢板支撑的长度、宽度、厚度及钢材屈服应力。结果表明,对于特定的支撑墙板,在墙板整体受弯开裂前,墙板约束宽度基本不变。同时,当其它构造参数相同时,仅变化支撑钢板的宽度、厚度及钢材屈服应力中的某一参数,墙板的约束宽度基本不变。约束宽度与支撑长度基本成正比,随墙板厚度的增大约束宽度逐渐减小;墙板整体受弯开裂后,随着支撑轴向压力的增加,墙板的约束宽度逐渐增大。
The finite element analysis for the restraining width of concrete panel in the unbonded diagonal steel plate brace encased in the reinforced concrete panel has been carried out to investigate the effect of constructional parameters, including the length, the width, the thickness and the yield strength of the brace, and the thickness of the panel, on the restraining width of the panel. The results reveal that the restraining width of the panel in a specimen is almost unchangeable before craek of the panel under overall bending. At the same time, when the other constructional parameters are the same, the width, the thickness and the yield stress of the brace nearly have no effect on the restraining width. The restraining width increases linearly with the length of the brace increasing, and it decreases with the thickness of the panel increasing. However, after the crack of the panel occurs under overall bending, the restraining width of the panel increases with the axial compressive loading of brace increasing.
出处
《建筑钢结构进展》
2011年第6期44-48,共5页
Progress in Steel Building Structures
基金
中国博士后基金(20100471067)
黑龙江省博士后基金(LBH-Z09195)
关键词
防屈曲支撑
无粘结内藏钢板支撑剪力墙
构造参数分析
墙板的约束宽度
buckling restrained brace
unbonded steel plate brace encased in reinforced concrete panel
analysis of construction parameters
restraining width of panel
