华东交通大学学报2017，Vol.34Issue(4)：44-49,6.
钢弹簧浮置板阻尼比试验研究
Test and Research of Damping Ratio for Steel Spring Floating Slab
宋姣姣 1高志升 2练松良1
作者信息
- 1. 同济大学道路与交通工程教育部重点实验室,上海201804
- 2. 安境迩(上海)科技有限公司,上海200030
- 折叠
摘要
Abstract
Damping ratio is an essential index in structure vibration evaluation as well as one of the key parameters in dynamic simulation.In order to test damping ratio in a typical steel spring floating slab,this paper compared damping ratio results calculated by two kinds of different tests,the wheel-set dropping test and the circle loading test.Effects of various inherent frequency calculating methods and different circle loading times on the whole damping ratiowere also analyzed.The results showed that in wheel-set dropping test damping ratios are basically the same when involving various inherent frequencies calculated via either power spectral density or formula;in circle loading test damping ratio declines by 15.48％ after 2 million and 350 thousand times of loading.It finds out that the wheel-set dropping test and circle loading test share a good agreement in damping ratio results.关键词
轨道交通/钢弹簧浮置板/对数衰减法/滞回曲线Key words
urban rail transit/steel spring floating slab/logarithmic decay method/hysteresis curve分类
交通工程引用本文复制引用
宋姣姣,高志升,练松良..钢弹簧浮置板阻尼比试验研究[J].华东交通大学学报,2017,34(4):44-49,6.
