森林工程2012，Vol.28Issue(3)：27-29,3.
频率法测短吊杆索力测量方法的比较分析
Comparative Analysis on Measurement Methods of Short Suspender Tensile Force by Frequency Method
摘要
Abstract
Taking the KangFu South Road Overpass in Yiyang city as an example, the suspender tensile force was tested by DASP dynamic collection and analysis system and JMM-268 cable force vibration measuring device, respectively, in order to compare the two frequency measurement methods. The comparison results showed that the DASP dynamic collection and analysis system has higher precision compared with the JMM-268 cable force vibration measuring device, which is more suitable for the measurement of short suspender tensile force. Vibration frequency method is based on the theory of the string vibration, which is the conventional indi- rect testing method of cable force in bridge health detection. The suspender of bowstring arch is short and the both ends constraint conditions have great impacts on boom cable force. In the case study, the flexural rigidity of stubby guy cable was considered and the boundary conditions was adopted to analyze the free vibration of both-end hinged cable, and the approximation formula to obtain cable force from frequency was established.关键词
短吊杆/索力/振动频率法/系杆拱桥Key words
short suspender/cable force/vibration frequency method/bowstring arch bridge分类
农业科技引用本文复制引用
刘灵勇,陈强..频率法测短吊杆索力测量方法的比较分析[J].森林工程,2012,28(3):27-29,3.基金项目
湖南省自然科学基金项目 （）
