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Comparative analysis on dynamic behavior of two HMA railway substructures |
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| Authors: | Mingjing FANG Yanjun QIU Jerry G. ROSE Randy C. WEST Changfa AI |
| Affiliation: | 1. National Center for Asphalt Technology (NCAT), College of Engineering, Auburn University, Auburn, AL 36830-5577, USA;School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China 3. College of Engineering, Civil Engineering Department, University of Kentucky, Lexington, KY 40506-0281, USA 4. National Center for Asphalt Technology (NCAT), College of Engineering, Auburn University, Auburn, AL 36830-5577, USA |
| Abstract: | A numerical analysis using a finite element program was performed on three structures:hot mix asphalt(HMA) reinforced trackbed(RACS-1),HMA directly supported trackbed(RACS-2),and traditional Portland Cement Concrete(PCC) slab track(SlabTrack).Although the comprehensive dynamic responses of RACS-1 were similar with SlabTrack,HMA layer can positively affect the stress distributions.In particular,the horizontal stresses indicate that the resilience of RACS-1 was improved relative to SlabTrack.In addition,HMA r... |
| Keywords: | high-speed railway HMA railway substructure FEM analysis |
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