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防屈曲支撑是一类特殊的中心支撑,通过特殊的构造,避免了普通中心支撑受压屈曲的问题,能更好地消耗地震能量。防屈曲支撑可用于新建和加固工程中,近年来在国内外的应用和研究逐渐增多。本文简要介绍了防屈曲支撑的构成、工作原理和防屈曲支撑杆件的计算。某图书馆拟进行全面改造,检测结果表明房屋整体抗震性能及构件承载力不满足要求。本工程采用防屈曲支撑进行抗震加固处理,以解决房屋整体抗震性能不足的问题,同时构件受力得到改善。结果表明,工程采用的耗能减震方案对减小部分构件地震作用力的效果明显,且结构层间位移角得到了有效控制。
Anti-buckling brace is a kind of special center support, through the special structure, it avoids the problem of buckling and buckling of ordinary center support and can consume the seismic energy better. Anti-buckling support can be used in new construction and reinforcement projects, applications and research at home and abroad in recent years gradually increased. This article briefly introduced the structure of buckling brace, working principle and calculation of buckling brace. A library intends to conduct a comprehensive renovation, test results show that the overall housing seismic performance and component bearing capacity does not meet the requirements. The project uses anti-buckling brace for seismic strengthening treatment to solve the problem of insufficient overall seismic performance of the house, meanwhile the component stress is improved. The results show that the energy-absorbing and damping scheme adopted by the project is effective in reducing the seismic forces of some members and the displacement angle between structural layers is effectively controlled.