【作者】 吴克川； 陶忠； 胡大柱； 余文正； 张龙飞； 高永林；

【Author】 Wu Kechuan;Tao Zhong;Hu Dazhu;Yu Wenzheng;Zhang Longfei;Gao Yonglin;Institute for Earthquake Engineering of Kunming University of Science and Technology;Tongji University;Yunnan Quakesafe Seismic Isolation Technologies Co.Ltd;

【机构】 昆明理工大学工程抗震研究所； 同济大学； 云南震安减震技术有限公司；

【摘要】 国务院实施新一轮的校安工程以来,对中小学校舍建筑安全等级提出更高要求。《建筑抗震设计规范》的修订同样对云南省玉溪地区提出更高的抗震要求。玉溪一中教学楼在此背景下采用屈曲约束支撑及底层柱截面加大的混合加固法进行加固设计,通过反应谱分析和静力弹塑性分析对加固前后结构整体性能指标进行评价比较。结果表明,多遇地震作用下支撑为结构提供抗侧刚度,以提高抗震承载力,罕遇地震作用下支撑屈服耗能,为结构提供多道抗震防线,加固效果明显。更多还原

【Abstract】 Since the implementation of a new round of school safety project of the State Council,higher level of security is required to the construction of primary and secondary schools. "Code for seismic design of buildings" also put forward higher seismic requirements for Yuxi amendments of Yunnan province.Yuxi teaching building seismic strengthening design with buckling restrained braces under this background,by response spectrum analysis and nonlinear static analysis before and after reinforcement to evaluate and compare the overall performance.The results show that under small earthquake the braces provide lateral stiffness for the structure to improve the seismic capacity,under rare earthquake the braces yield and dissipation of energy to provide multi-channel seismic line of defense for the structure,reinforcing effect is obvious.更多还原