| 秦沈客运专线路涵过渡段动应力测试与分析 |
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| 引用本文： | 黄晚清,陆阳,罗书学,陈成叠. 秦沈客运专线路涵过渡段动应力测试与分析[J]. 西南交通大学学报, 2005, 40(2): 220-223 |
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| 作者姓名： | 黄晚清 陆阳 罗书学 陈成叠 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 基金项目： | 铁道部科技研究开发计划项目(2000G48 F 2) |
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| 摘 要： | 对秦沈客运专线DK49 689．0-DK49 700．7路涵过渡段进行了动应力测试，分析了动土压力与列车速度的关系、沿线路纵向分布以及随深度的变化．结果表明：动土压力随列车速度提高而增大，当列车速度超过220km／h时，动土压力基本趋于稳定，但始终大于准静态土压力；随深度增大，动土压力迅速衰减，趋于准静态土压力．此外，动土压力还受路基结构的影响，涵洞顶路基的动土压力明显大于一般路基的动土压力．
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| 关 键 词： | 铁道工程 秦沈客运专线 过渡段 动土压力 |
| 文章编号： | 0258-2724(2005)02-0220-04 |
Dynamic Stress Measurement and Analysis of Subgrade-Culvert Transition Section on Qinhuangdao-Shenyang Passenger Special Line |
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| HUANG Wan-qing,LU Yang,LUO Shu-xue,CHEN Cheng-die. Dynamic Stress Measurement and Analysis of Subgrade-Culvert Transition Section on Qinhuangdao-Shenyang Passenger Special Line[J]. Journal of Southwest Jiaotong University, 2005, 40(2): 220-223 |
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| Authors: | HUANG Wan-qing LU Yang LUO Shu-xue CHEN Cheng-die |
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| Abstract: | Dynamic soil stress of a subgrade-culvert transition section from DK49+689.0 to DK49+700.7 on the Qinhuangdao-Shenyang passenger special line was measured and its influencing factors, including train speed, structural changes and soil depth, were analyzed. The results indicate that dynamic earth pressure trends to rise with the increase of train speed. When train speed exceeds (220 km/h, ) dynamic earth pressure trends to be unchanged, but it is always bigger than the earth pressure of quasi-static state. In addition, dynamic earth pressure attenuates rapidly with the increase of soil depth, approaching to the quasi-static earth pressure. Furthermore, it is also related to the structure of subgrade and much greater over the culvert than in normal subgrade. |
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| Keywords: | railway engineering Qinhuangdao-Shenyang passenger special line transition section dynamic earth pressure |
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