基于频率法的单索玻璃幕墙索力测试研究  

Research on Cable Tension Measurement of Glass Curtain Wall with Single Cable Based on Frequency Method

作　　者：程文星[1,2] 徐诗童 杨琼 

机构地区：[1]重庆大学土木工程学院,400045 [2]山地城镇建设与新技术教育部重点实验室(重庆大学),400045 [3]中煤科工集团重庆设计研究院有限公司,400016 [4]重庆电力设计院,401121

出　　处：《特种结构》2017年第4期31-35,共5页Special Structures

基　　金：国家自然科学基金项目(51078370)

摘　　要：本文以某机场T3A航站楼建设项目为研究背景,对张拉后尚未安装接驳爪及玻璃面板的预应力单索幕墙拉索进行了现场实测。对所获得的振动时域数据进行频谱分析,利用现有的频率法理论计算公式得到索力,将其与压力表测试法得到的索力进行比较,结果表明:现有的频率法理论计算公式不宜直接运用于幕墙拉索的索力测试,否则将会导致所测得索力出现较大偏差。通过采用比对的方法对现有计算单索幕墙索力的频率法进行修正,修正后精度有明显改善,为类似的索力测试提供参考。In this paper, the construction project of terminal T3A of an airport was taken as the research background. The cable force of the single prestressed cable supported glass curtain wall with no installed the stainless steel glass spider and the glass panel was measured. The frequency spectrum of the obtained time do- main data was analyzed and the cable force was obtained by using the existing frequency method. Then the results was compared with the cable force obtained by the pressure gauge test method to analysis the error of the results of the frequency method. The results show that it is not appropriate to directly apply the existing theoretical frequen- cy method formula to the cable force test of the curtain wall cable, which would lead to the large deviation of the measured cable force. By using the matching method, the existing frequency method is modified in the curtain wall, and the precision is improved obviously, which can provide reference for similar cable force test.

关 键 词：单索玻璃幕墙 拉索 频率法 索力测试 

分 类 号：TU317[建筑科学—结构工程]