| 重力式桥墩混凝土简支梁桥制动力冲击系数研究 |
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| 引用本文： | 李宏年,宋景振.重力式桥墩混凝土简支梁桥制动力冲击系数研究[J].北京交通大学学报(自然科学版),2001,25(2):81-84. |
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| 作者姓名： | 李宏年 宋景振 |
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| 作者单位： | 北方交通大学土木建筑工程学院!北京100044 |
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| 摘 要： | 对不同跨数的跨度为 32m的重力式桥墩铁路PC简支梁桥分别进行了承受列车制动力的动力和静力分析 .结果表明 :虽然制动力具有动力荷载特性 ,但就桥梁下部结构承受的最大制动力而言 ,两种计算结果相差甚微 ,冲击系数在 0 .98～ 1.0 2之间 ,为采用简单的静力方法计算该桥式的墩台最大制动力提供了依据 .
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| 关 键 词： | 铁路桥梁 重力式桥墩 制动力 制动力冲击系数 |
| 文章编号： | 1000-1506(2001)01-0081-04 |
| 修稿时间： | 2000年11月30日 |
Study on Impact Coefficient of Braking Force for Gravity Piers of Railway Bridges with Simple Supported Concrete Beams |
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| LI Hong nian,SONG Jing zhen.Study on Impact Coefficient of Braking Force for Gravity Piers of Railway Bridges with Simple Supported Concrete Beams[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2001,25(2):81-84. |
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| Authors: | LI Hong nian SONG Jing zhen |
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| Abstract: | Dynamic and static analysis have been proceeded for gravity piers of railway bridges with different spans of 32 meter simple supported concrete beams under the braking force. The analysis shows that although braking force processes the character of an impulsive loading, the maximum forces distributed on piers and abutments, given by two different analysis, are almost the same. This provides the basis to calculate the braking force exerting on piers and abutments by using simple static analysis. |
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| Keywords: | railway bridge braking force impact coefficient of braking force |
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