摘要
通过对天水木网架结构的静力和动力分析,对不满足的构件采用双钢管约束屈曲支撑进行加固。利用ABAQUAS有限元程序对网架加固前后分别建立模型,进行有限元静动力分析,对比分析结果,得出了采用BRB加固网架结构杆件稳定性和刚度不足是一种有效的方法。
Steel roof grid was detected and static analyzed.The grid was retrofitted because bearing capacity and rigidity of some steel members can’t meet requirement provided in codes.Method to reinforce the steel grid is adding members section area and replacing members with improved double-tube buckling restrained members. Analyze seismic behaviors of retrofitted grid using ABAQUAS software.
出处
《中国建材科技》
2016年第1期42-46,共5页
China Building Materials Science & Technology
基金
国家自然科学基金项目(51368037)
甘肃省高等学校基本科研业务费专项基金项目(1404ZTB256)
关键词
钢网架屋盖
加固
静力分析
动力非线性分析
steel roof grid
retrofitted
static analysis
nonlinear time history analysis
