| 桥梁梁端抬枕装置垂向动力学特性分析 |
| Vertical Dynamic Characteristic Analysis of Bridge Terminal Sleeper supporting Apparatus |
| 投稿时间：2009-02-26 |
| 中文关键词:梁端抬枕装置 瞬态动力分析 动力响应 非线性 梁缝 大跨度桥梁 |
| 英文关键词:terminal sleeper supporting apparatus transient dynamic analysis dynamic response nonlinearity bridge seam long span bridge |
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| 中文摘要: |
| 随着铁路大跨度桥梁的数量的增加，实际工程中急需一种能够加强桥梁梁缝处轨道结构强度的部件，因此，中铁第一勘察设计院和中铁宝桥公司共同设计开发了桥梁梁端抬枕装置。基于ANSYS非线性瞬态动力分析原理，计算了抬枕装置在列车荷载作用在的竖向动力响应。计算结果表明，钢轨最大竖向位移为1.54 mm，抬枕装置有效地控制了钢轨在梁缝处的竖向不平顺；伸缩缝处钢轨扣件最大压力和最大上拔力分别为45.794 kN和5.135 kN，能够满足扣件强度要求；钢纵梁扣压件最大压力和最大上拔力分别为11.247 kN和23.7 kN |
| 英文摘要: |
| With the increment of railway long span bridges, components capable of intensifying the stiffness of track structure beside the bridge seam is in urgent need in the actual projects. Therefore, China Railway First Survey and Design Institute Group Ltd, together with Baoji Bridge Company of China Railway, has designed and developed the bridge terminal sleeper supporting apparatus. Based on the ANSYS nonlinear transient dynamic analysis principle, this paper calculates the vertical dynamic response of track structures equipped with terminal sleeper supporting apparatus under vertical mobile load effects. Its result indicates that the maximum vertical displacement of the railroad rail is 1.54 mm which shows the sleeper supporting apparatus can effectively control the vertical track irregularity of the railroad rail beside the bridge seam, and the maximum pressure and maximum upholding force of the railroad rail fastening beside the dilatation joint are 45.794 kN and 5.135 kN respectively while those of the steel longitudinal beam are 11.247 kN and 23.7 kN respectively, both of which meet the stiffness requirement of fastening. |
| 孔凡兵.桥梁梁端抬枕装置垂向动力学特性分析[J].石家庄铁道大学学报：自然科学版,2009,(3):82-85. |
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