| 路桥过渡段桥头搭板容许坡差确定的参数影响 |
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| 引用本文： | 张洪亮,胡长顺.路桥过渡段桥头搭板容许坡差确定的参数影响[J].长安大学学报(自然科学版),2003,23(3):11-14,59. |
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| 作者姓名： | 张洪亮 胡长顺 |
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| 作者单位： | 长安大学,公路学院,陕西,西安,710064 |
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| 摘 要： | 采用三自由度车辆模型 ,考虑上桥和下桥两个方向 ,建立了对车辆通过路桥过渡段进行动力响应分析所需的振动方程和初始条件 ,并提出以人的最大瞬态振动值作为搭板容许坡差确定的控制指标。在动力响应分析的基础上 ,详细分析了行进方向、车速、搭板坡差、搭板长度、载重和桥面沉降坡差等参数对人的最大瞬态振动值的影响 ,得到的一系列结论对于在各种不同的情况下准确确定搭板容许坡差具有重要的价值。
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| 关 键 词： | 跳车 桥头 搭板容许坡差 动力响应 最大瞬态振动值 参数影响 |
| 文章编号： | 1671-8879(2003)03-0011-04 |
Parameters' influence on determination of allowable differential slope of approach slab |
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| ZHANG Hong liang,HU Chang shun.Parameters'''' influence on determination of allowable differential slope of approach slab[J].JOurnal of Chang’an University:Natural Science Edition,2003,23(3):11-14,59. |
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| Authors: | ZHANG Hong liang HU Chang shun |
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| Abstract: | Simplifying the vehicle as a three degree freedom system, taking into account two different movement directions, the vibration equations and the initial condition in dynamic response analysis for vehicle's passing the approach slab were developed. The maximum transient vibration value was selected as the controlling index for determining the differential slope of the approach slab based on the dynamic response analysis. The influence factors on the maximum transient vibration value such as movement direction, speed, differential slope and length of approach slab and weight of the load, were studied. |
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| Keywords: | vehicle bump bridge approach slab allowable differential slope dynamic response maximum transient vibration value parameters' influence |
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