High speed railway slab track damage detection method based on strain mode

• Main Authors: RONG LIFAN, ZHANG XIAODONG, YANG YONG, XIE KAIZE, ZHAO JIA, ZHAO WEIGANG
• Format: Patent
• Language: Chinese; English
• Published: 25.10.2019
• Subjects: OTHER AUXILIARY EQUIPMENT FOR RAILWAYS; PERFORMING OPERATIONS; RAILWAYS; TRANSPORTING

The invention discloses a high speed railway slab track damage detection method based on a strain mode. The method comprises the following steps: acquisition of a first-stage longitudinal bending strain mode actual value of an undamaged slab track; division of measuring points of a track slab and arrangement of a sensor; stimulation and signal collection; signal analysis processing and damage identification. In the using process, the strain mode of the slab track can be compared with the strain mode of the undamaged slab track by measuring service conditions, so that detection for the slab track under the service conditions is realized; and moreover, for the damaged slab track under the service conditions in the detection process, the positions of damages can be identified accurately, andthen the method is beneficial for popularization and application. 本发明公开了一种基于应变模态的高速铁路板式轨道伤损检测方法，包括如下步骤：无伤损板式轨道的第一阶纵向弯曲应变模态实际值获取；轨道板测点划分和传感器布置；激励与信号采集；信号解析处理与伤损识别。本发明在使用的过程中可通过测量服役条件下板式轨道的应变模态，与无伤损的板式轨道的应变模态对比，从而实现对服役条件下板式轨道的检