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| 行车速度对桥路过渡段路基动应力的影响 | |
| 引用本文： | 李献民,肖宏彬,王永和.行车速度对桥路过渡段路基动应力的影响[J].地震工程与工程振动,2005,25(1):49-53. |
| 作者姓名： | 李献民 肖宏彬 王永和 |
| 作者单位： | 1. 郑州大学,环境与水利学院,河南,郑州,450002;中南大学,土木建筑学院,湖南,长沙,410075 2. 中南大学,土木建筑学院,湖南,长沙,410075;株洲工学院,土木系,湖南,株洲,412008 3. 中南大学,土木建筑学院,湖南,长沙,410075 |
| 基金项目： | 铁道部科技专项基金项目(2003G019) |
| 摘 要： | 通过对秦沈客运专线一路桥过渡段路基动应力的现场实测，得到了行车速度对无缝线路桥路过渡段路基动应力的影响特征，同时，定义了速度动力系数的概念，并得到了过渡段路基中速度动力系数变化规律。同时提出随行车速度的提高，必存在一个临界车速使得列车在通过路桥过渡段时，其动响应(动应力、动应变、动位移、振动加速度等)变化总趋势发生改变。研究结果对铁路客运专线过渡段的设计和施工有参考意义。 |
| 关 键 词： | 路桥过渡段 路基 动应力 速度动力系数 现场试验 |
| 文章编号： | 1000-1301(2005)01-0049-05 |
Study on influence of train speeds upon the dynamic stress of bridge-approach roadbed |
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| Li Xianmin.Study on influence of train speeds upon the dynamic stress of bridge-approach roadbed[J].Earthquake Engineering and Engineering Vibration,2005,25(1):49-53. | |
| Authors: | Li Xianmin |
| Institution: | Li Xianmin~ |
| Abstract: | The dynamic stress influence rule subjected to the train speed of continuously welded rail bridge-approach roadbed is obtained by a field test in the Qin-Shen passenger transport special railway line. At the same time, the conception of speed power coefficient is presented, and the rule of speed power coefficient of bridge-approach roadbed is also gained. It is presented that there is a critical speed which will make the trend of dynamic response change when the train passes through the transition section. The study results may provide some important instruction for the design and construction of bridge-approach roadbed of passenger transport special railway line. |
| Keywords: | Bridge-approach roadbed dynamic stress speed power coefficient field test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |