Effect of Rubber Soil Backfill on Vibration Isolation of Open-cut Tunnels
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 12
Abstract
［Objective］ During the operation of urban rail transit, the train operation induced vibration can damage buildings and precision instruments along the line, and even affect people's daily lives. Therefore, effective vibration reduction measures need to be studied. ［Method］ The long-mileage open-cut section tunnel of Xiong'an Rail Transit R1 Line is taken as an example, which uses rubber soil instead of plain fill. With numerical simulation method, a corresponding tunnel-stratum finite element model is established in ABAQUS software to analyze the vibration isolation effect of different rubber soil damping ratios on open-cut tunnels. ［Result & Conclusion］ Using rubber soil with a damping ratio of 0.04 for backfilling can reduce the ground vertical vibration acceleration by 6.2% and the vibration acceleration level by 1.1% at most; using rubber soil with a damping ratio of 0.06 for backfilling can reduce the ground vibration acceleration by 11.4% and the vibration acceleration level by 1.3% at most. The vib-ration isolation effect of rubber soil with the above two damping ratios on open-cut tunnels is quite obvious. At the same measuring point, the reduction amount of vibration acceleration and vibration acceleration level by rubber soil with a damping ratio of 0.06 is generally greater than that by rubber soil with a damping ratio of 0.04, with the maximum reduction rates reaching 5.2% and 0.667% respectively.
Authors and Affiliations
Donghao YIN, Hao JIN, Ruimeng XIA, Xingyu GU
Keywords
Related Articles
- EP ID EP752739
- DOI 10.16037/j.1007-869x.2024.12.034
- Views 15
- Downloads 0
Research and Application of City (Suburban) Railway Post-station Fully Automatic Turn-back Method
Objective CTCS2+ATO (Chinese Train Control System Level 2 + Automatic Train Operation) system can meet the requirements for cross-line operation between city (suburban) railway and national mainline and intercity railway...
Development of Automatic Calculation Program for Passenger Flow Assignment in Urban Rail Transit Network Based on VISUM
[Objective] In view of the much repetitive work in the calculation process of passenger flow assignment in urban rail transit network, an automatic calculation program is developed on the basis of the research on the pas...
Research of Active Radial Device for Metro Train
Objective Metro trains experience wheel wear and noise issues when negotiating small radius curve section. Active radial technology for bogie wheelsets is considered an effective solution theoretically. It is essential t...
Timing Design and Commissioning Scheme for Linkage between Urban Rail Transit Electric Passenger Car Doors and Platform Doors
Objective Realizing the synchronous linkage between electric passenger car doors and platform doors (hereinafter referred to as "car-platform doors") in urban rail transit can further improve the metro operation efficien...
Analysis of Metro Vehicle Operational Stability and Safety under Crosswind Effects
Objective When urban rail transit trains operate on elevated tracks, crosswinds have a significant impact on the stability and safety of vehicle operation. It is essential to conduct a more in-depth study on the dynamics...