地鐵停車場上蓋結(jié)構(gòu)車致振動試驗研究

打開文本圖片集

中圖分類號：U231 文獻(xiàn)標(biāo)志碼：A文章編號：1006-0316（2025）06-0040-07

doi ： 10.3969/j.issn.1006-0316.2025.06.006

Experimental Study on Train-Induced Vibration in Over-Track Structures of a Metro Depot

DONG Bonan1，CHENDilai2，LIU Wei1，F(xiàn)U Junfeng'，LONG Hui1 （1. Zhuzhou Times New Material Technology Co.，Ltd.， Zhuzhou 412007， China;

2.School of Railway Transportation，Shanghai Institute of Technology，Shanghai 201418， China）

Abstract ∵ To investigate the vibration issues inan operational metro depot’s structure，this study systematically examines the transmission characteristics of train-induced vibrations and their impact on the structure through field measurement and data analysis. Vibration monitoring points were arranged in both the depot area and the over-track area，with synchronous data collction of vibration responses from rails，track beds， structural columns，and on-track slab under different train speeds （ 10-25km/h . The time-frequency joint analysis revealed a strong correlation between the dominant 53Hz frequency component and the P2 mode. The study identified the attenuation pattrns of vibration transmission along the structure： the vibration transmission loss from the track bed to structural columns was notably insufficient below 50Hz ，allowing low-frequency vibrations to travel long distances through the structure. The evaluation based on the GB/T1Oo70-88 indicated that when trains operated at 15km/h ，themaximum Z-vibrationlevel on thecoverreached 75dB ，exceeding thenighttime limit for residential areas by 8dB . The parametric analysis showed that when the train speed was reduced by more than half， the maximum vibrationaccelerations of rails，track beds，structural columns beneath the cover， and columns above the cover decreased by 50% ， 55% ， 45% ，and 60% ，respectively，and themaximum Z-vibration level of the building structure was reduced by 5～6 dB.These findings provide critical insights for vibration control in existing metro depots.

Key words ∵ metro ; over-track structure ; train-induced vibration ;P2 resonance ; transmission characteristics

隨著我國城市化進(jìn)程的加速推進(jìn)，土地資源集約化利用已成為建設(shè)資源節(jié)約型社會的核心議題。（剩余5059字）