Track structure mechanical property evaluation method based on vibration noise frequency spectrum feature matching

• Main Authors: ZHANG TAO, ZHONG YANGLONG, WANG YIZHEN, GAO LIANG, HOU BOWEN, ZENG QIN'E, LIU XINCHENG, CUI RIXIN, ZHANG XIANHENG
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a track structure mechanical property evaluation method based on vibration noise frequency spectrum feature matching, wherein vibration acceleration and noise radiation, generated when a train passes by, of a track structure in normal and defected states are tested, and consequently a frequency spectrum curve feature database of the acceleration and sound pressure data corresponding to various damage defects is built. The processed to-be-detected track structure vibration and noise test data is compared through the built database, thus, track traffic track structure mechanical state assessment and identification and judging of various damage defects based on vibration noise joint test are realized, the shortcoming of failure in systematic assessment of the track structure mechanical state through single vibration or noise test data in the past is remedied, and safe and steady running of the track traffic is guaranteed. 本发明公开种基于振动噪声频谱特征匹配的轨道结构力学性能评价方法，通过对列车通过时正常及病害状态下轨道结构振动加速度、噪声辐射进行测试，