Affiliation:
1. China Railway Design Corporation, Co. Ltd
Abstract
Abstract
The structural instability caused by the loosening of bolts of the sound barrier of high-speed railways has become an important reason affecting its safe use, but there is still a lack of basic research on the possible structural vibration of the sound barrier when the bolts are loosened. In this study, a finite element model of the sound barrier of high-speed railway was constructed, and the vibration mode simulation analysis under different bolt loosening conditions was carried out. The results show that the loosening of the bolts between the column and the concrete foundation will cause the vibration frequency of the overall structure of the sound barrier to change, induce new local mode shapes, and lead to the increase of vibration displacement at the top of the column. The results of this study will provide a reference for the structural health detection method of high-speed railway sound barrier in the future.
Publisher
Research Square Platform LLC
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