铁道标准设计2016，Vol.60Issue(10)：22-26,5.DOI:10.13238/j.issn.1004-2954.2016.10.006
基于冲击回波法识别无砟轨道混凝土结构中的蜂窝伤损深度研究
Identify the Depth of Honeycomb in Ballastless Track Concrete Structure Based on Impact-echo Method
摘要
Abstract
To study the different degrees of damages in ballastless track concrete structure encountered in the operation of railway ballastless track, this paper uses the finite element software ANSYS LS-DYNA3D to simulate the impact-echo and learn the propagation speed and rules of the stress wave in the track slab, and employs the impact-echo method to identify the depth of damage in the track slab. The results show that the stress waves reflect on honeycomb and mortar interface and generate different peak values in frequency spectrum graph, and the specific depth of honeycomb can be calculated according to the principle of frequency spectrum to locate damages.关键词
冲击回波法/蜂窝伤损/无砟轨道/高速铁路Key words
Impact-echo method/Honeycomb damage/Ballastless track/High-speed railway分类
交通工程引用本文复制引用
胡志鹏..基于冲击回波法识别无砟轨道混凝土结构中的蜂窝伤损深度研究[J].铁道标准设计,2016,60(10):22-26,5.基金项目
四川省科技支撑计划项目(2012GZ0104) （2012GZ0104）
