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| Numerical simulation of dynamic response for quasi-high speed railway subgrade |
| Received:December 23, 2007 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20101029 |
| KeyWord:subgrade dynamic displacement influencing factors dynamic text double peaks |
| Author | Institution |
| 孙常新 |
重庆交通大学桥梁结构工程重点实验室,重庆 ;华北水利水电学院,郑州 |
| 胡金虎 |
华北水利水电学院,郑州 |
| 梁波 |
重庆交通大学桥梁结构工程重点实验室,重庆 |
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| Abstract: |
| Based on the railway subgrade of Qin-Shen special line for passenger transport, the dynamic response for quasi-high speed railway subgrade was simulated and studied. Using the finite element method, the railway subgrade's dynamic response's (dynamic displacement) distributed rule under the high speed train load was calculated and analyzed, the influencing factors of subgrade's dynamic displacement were discussed, "the double peaks phenomena" which denoting the change of subgrade's dynamic response (dynamic displacement) with railway speed was brought forward, and its causing reason was analyzed. The field testing dates of the qin-shen special line for passenger transport and the calculating dates were contrasted in the end, the conclusion was gotten that the numerical simulation and field test had accordant results. |
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