Dynamic response and pile-soil interaction of a heavy-haul railway embankment slope reinforced by micro-piles

We investigated the dynamic characteristics and pile-soil interaction of a heavy-haul embankment reinforced by micro-piles. First, the vibration of a heavy-haul railway under a C80 train was tested. Based on the acceleration test, the dynamic response characteristics were further studied using a mod...

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Bibliographic Details
Published in:Computers and geotechnics 2018-08, Vol.100, p.144-157
Main Authors: Dong, Jie, Wu, Zhi-Hui, Li, Xin, Chen, Hong-Yun
Format: Article
Language:English
Subjects:
Attenuation
Computer simulation
Dynamic characteristics
Dynamic response
Embankments
Field test
Field tests
Heavy-haul railway
Mathematical models
Mechanical properties
Micro piles
Model experiment
Model testing
Numerical simulation
Piles
Railway networks
Simulation
Soil
Soil dynamics
Soil investigations
Soil-pile interaction
Three dimensional models
Vibration
Vibration analysis
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Summary:We investigated the dynamic characteristics and pile-soil interaction of a heavy-haul embankment reinforced by micro-piles. First, the vibration of a heavy-haul railway under a C80 train was tested. Based on the acceleration test, the dynamic response characteristics were further studied using a model test and 3D numerical simulation, which were verified via comparison with the field test. Finally, by integrating the model test and numerical simulation results, the influence of the pile length, pile diameter and pile spacing on the dynamic behavior of the embankment was analyzed, and the vibration-attenuation characteristics and dynamic soil-arching effect were discussed.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2018.04.005