输电塔结构杆件及节点损伤识别  

Damage Identification of the Member and Node for the Transmission Tower

作　　者：肇鸿儒 杨礼东[1] 刘福海[1] 

机构地区：[1]中国电力工程顾问集团东北电力设计院有限公司,长春130021

出　　处：《吉林电力》2016年第2期14-16,20,共4页Jilin Electric Power

摘　　要：由于受到荷载和环境条件等因素的影响,输电结构在使用期间可能会出现损伤。结构的损伤会导致某些物理参数在结构损伤前后发生明显的变化,理论上利用这些参数就可以判断结构有无损伤,以及损伤的位置。按照结构的受力特点,用杆单元和梁单元来模拟结构,获得结构的震动周期等动态性能,然后用单元模态应变能损伤指数法对角钢铁塔杆件、节点损伤识别诊断,结果表明,单元模态应变能损伤指数法对单处损伤可以取得良好的效果。Due to the influence of the load and environmental conditions,damage may occur during the life of the transmission structure.The structural damage will cause obvious changes of some physical parameters before and after the structural damage,and these parameters can determine whether the structure is damaged,and the position of the damage.According to the force characteristics of the structure,obtained the dynamic performance such as vibration period of the structure,using the link and beam elements simulation structure,then,the damage identification and diagnosis of the steel tower and the joint of the steel tower are damaged by the Element Modal Strain energy Damage Index（EMSDI）method.The results indicated that EMSDI method can obtain good results for single damage.

关 键 词：输电塔 结构杆件 节点 单元模态应变损伤指数 损伤识别 

分 类 号：TU347[建筑科学—结构工程] TU317