两边连接X型屈曲约束钢板墙的简化分析模型

Simplified analysis model of X-shape buckling restrained steel plate shear wall with two-side connection

为简化带有X型屈曲约束钢板墙的结构体系受力分析,提出用交叉支撑模型来模拟X型屈曲约束钢板墙。当钢板墙高宽比小于1.5时支撑点取在距墙边缘h/10处,当钢板墙高宽比大于等于1.5时支撑点取在距墙边缘b/6处。等效交叉支撑杆件的截面面积和材料强度按与X型屈曲约束钢板墙的初始刚度和屈服承载力相等进行换算。对提出的简化分析模型进行了对比验证,分析结果表明该模型能够准确模拟X型屈曲约束钢板墙及其在框架结构中的受力行为,且不受加载方向和钢板墙高宽比的限制,可以作为两边连接X型屈曲约束钢板墙的等代模型进行结构受力分析。

In order to simplify the analysis of the structure with X-shape buckling restrained steel plate shear wall,a crossing brace model is presented to simulate the X-shape buckling restrained steel plate shear wall.When the height-to-width ratio of steel plate is less than 1.5,the brace point is h/10 far away from the edge of the wall,when the height-to-width ratio of steel plate is greater than or equal to 1.5,the brace posint is b/6 far away from the edge of the wall.The cross sectional area and material strength of equivalent crossing brace could be calculated according to the initial stiffness and yield capacity of the X-shape buckling restrained steel plate shear wall.The accuracy of the presented simplified analysis model is validated by comparing to X-shape buckling restrained steel plate shear wall.The results show that the simplified analysis model could accurately simulate the X-shape buckling restrained steel plate shear wall,and could not restricted by the direction of loading and height-to-width ratio of the steel plate.So it could be used in structural analysis as equivalent model of buckling restrained steel plate shear wall with two-side connection.