大跨越输电塔-线耦联体系振动台试验模型设计研究  

Design study on shaking table test model of a long span transmission tower-line coupling system

作　　者：田利[1] 牛延宏[1] 马瑞升[1] 李兴建[1] 易思银 辛爱强 国巍[2] 

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]中南大学土木工程学院,湖南长沙410075

出　　处：《世界地震工程》2017年第3期42-50,共9页World Earthquake Engineering

基　　金：国家自然科学基金项目(51578325);国家自然科学基金青年基金项目(51208285)

摘　　要：以某220V大跨越输电线路为背景,研究了大跨越输电塔-线耦联体系振动台试验模型设计。根据相似理论对输电塔模型设计,运用刚度等效原则确定各构件截面尺寸,通过有限元模型计算和试验模型白噪声扫频,得到输电塔的基频计算值与试验值。根据导(地)线动力特性和质量相似关系,对导(地)线进行二次缩尺,确定了导(地)线弧垂和线密度,对比分析了原型的频率和试验模型的频率。采用完全质量配重方法对大跨越塔-线体系缩尺模型进行配重,以期获取结构弹塑性响应结果。该缩尺模型设计理论可为大跨越输电塔-线体系结构振动台试验设计提供参考和依据。Based on practical project, shaking table model design of long span transmission tower-line system is in- vestigated. The experimental model was designed by similarity theory and section size of components was deter- mined using equivalent stiffness principle. The frequency of experimental model was measured by white-noise scan- ning technique and compared with the finite analysis result. According to similarity relationship of dynamic charac- teristic and mass of transmission lines, the scale of transmission lines was readjusted, the sag and line mass of transmission line was determined. The mass of long span transmission tower-line system was determined using full- mass counterweight method to obtain structural pXastic response. The design theory of scale model could provide meaningful reference for shaking table model design of large span transmission tower-line system.

关 键 词：大跨越输电塔-线耦联体系 振动台缩尺试验 线弹性缩尺设计 缩尺模型 

分 类 号：TU312.3[建筑科学—结构工程]