摘要
结构的动力特性主要包括固有频率、振型和阻尼比等参数,是结构的固有特性。在对结构进行加固时,有些加固方法会导致结构的动力特性发生改变,这种情况下可采用动力特性测试技术对加固效果进行判断。由于实体结构的动力特性测试结果包含了本构关系、边界条件、节点构造和施工影响等信息,能真实反映实体结构性能,将动力特性测试技术用于加固效果判断有其独有的优势。对动力特性测试技术用于结构加固效果判断的工作原理进行了分析,并介绍了该方法在工程中的应用情况,可为相关标准修订和动力特性测试技术的工程应用提供参考。
The dynamic properties of the structure mainly include parameters such as natural frequency,vibration mode and damping ratio,which are the inherent characteristics of the structure.Some structural strengthening methods will lead to the variation in the dynamic properties.In this case,dynamic properties testing technique could be used to judge the structural strengthening effect.Because the dynamic properties testing results of the entity structure contain information such as constitutive relationship,boundary conditions,joints detail and construction influence,which could truly reflect the structure performance,the dynamic properties testing technique has particular advantages in judging the strengthening effect.The working principles of the dynamic properties testing technique for structural strengthening effect judgment was analyzed,additionally,the application of this method in engineering was introduced,which could provide reference for the revision of relevant standards and the engineering application of dynamic properties testing technique.
作者
吴体
肖承波
刘汉昆
黎红兵
蒋智勇
WU Ti;XIAO Chengbo;LIU Hankun;LI Hongbing;JIANG Zhiyong(Sichuan Institute of Building Research,Chengdu 610081,China;Sichuan Huashi Group Co.,Ltd.,Chengdu 610081,China)
出处
《四川建筑科学研究》
2023年第6期68-74,共7页
Sichuan Building Science
基金
国家重点研发计划(2021YFF0602000)。
关键词
动力特性测试
结构加固
加固效果
dynamic properties testing
structural strengthening
strengthening effect
