铁道标准设计Issue(9)：52-54,55,4.DOI:10.13238/j.issn.1004-2954.2014.09.013
基于曲率模态法识别轨道板的伤损研究
Study on Damage Identification of Track Slab Based on the Curvature Modal
摘要
Abstract
Hollows and cracks develop in ballastless track slab during construction and operation. The occurrence of the damages will change the system dynamic characteristic. The modal analysis theory shows the change of the system characteristics will inevitably change the modal parameters. This paper illustrates the process to establish the finite element model of track slab-mortar, and to simulate single damage and multi damages of track slab by means of stiffness reduction of element. The calculation and analysis of curvature modal in transverse or longitudinal direction of track slab is conducted with the method of curvature modal damage identification. The results show that the curvature modal and curvature modal difference in either transverse or longitudinal direction of track slab can locate a single damage and multiple damages of track slab can also be identified.关键词
轨道板/CA砂浆/伤损/曲率模态/曲率模态差Key words
Tack slab/CA mortar/Damage/Curvature modal/Curvature modal difference分类
交通工程引用本文复制引用
胡志鹏,刘婷林,谢铠泽,王平..基于曲率模态法识别轨道板的伤损研究[J].铁道标准设计,2014,(9):52-54,55,4.基金项目
四川省科技支撑计划项目(2012GZ0104) （2012GZ0104）
