基于动态响应的结构安全性诊断  

Structural Safety Diagnosis Based on Dynamic Response

作　　者：况中华 何光辉 李鑫奎 KAUNG Zhonghua;HE Guanghui;LI Xinkui(Engineering General Institute of Shanghai Construction Group,Shanghai 200080,China)

机构地区：[1]上海建工集团股份有限公司,上海200080

出　　处：《建筑施工》2020年第12期2355-2357,共3页Building Construction

基　　金：上海建工集团股份有限公司科研项目(18YJKF-10)。

摘　　要：以结构的刚度作为结构安全性诊断的评估对象,把结构的刚度差值比α(即结构的实际刚度与理论刚度的差值比)作为评估标准,对结构安全状态的诊断方法进行了探究。当α≥0时,表明结构具备富余的安全度;当α<0时,表明结构存在损伤,无法达到理想的安全状态。先通过结构在荷载作用下的实际响应与理论响应进行差值计算,建立结构的理论-实际的联合振动方程,最终解析出结构的刚度差值比α。Taking the structure stiffness as the evaluation object of structural safety diagnosis, and taking the structure stiffness difference ratio α(that is, the difference ratio between the actual stiffness and the theoretical stiffness) as the evaluation standard, the diagnosis method of structural safety state is explored. When α≥0, it indicates that the structure has abundant safety degree;when α<0, it indicates that the structure is damaged and cannot reach the ideal safety state. Through the difference between the actual response and the theoretical response of the structure under the load, the theoretical and practical joint vibration equation of structure is established, and the stiffness difference ratio α of the structure is analyzed.

关 键 词：安全性诊断 动态响应 刚度差值比 刚度损伤系数 

分 类 号：TU312[建筑科学—结构工程]