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桥梁横向刚度限值
相关语句
  limit value of bridge lateral rigidity
     Study on Limit Value of Bridge Lateral Rigidity for Preventing Derailment
     预防列车脱轨的桥梁横向刚度限值研究
     Based on energy random analysis theory for derailment,a new method to analyze the limit value of bridge lateral rigidity for derailment prevention is established.
     基于列车脱轨能量随机分析理论,提出了预防列车脱轨的桥梁横向刚度限值分析方法。
短句来源
     Based on energy random analysis theory for derailment,a new method for analyzing the limit value of bridge lateral rigidity for derailment prevention is established.
     基于列车脱轨能量随机分析理论,提出新的铁路桥梁横向刚度限值分析方法。
短句来源
     Based on theory of random energy analysis of train derailment,a new method was put forward to establish the limit value of bridge lateral rigidity with which derailment on bridges can be prevented.
     基于列车脱轨能量随机分析理论,提出了预防列车脱轨的桥梁横向刚度限值的制定方法。
短句来源
     On basis of energy random analysis theory for derailment, a new method is presented with which the limit value of bridge lateral rigidity for preventing derailment can be established.
     本文以列车脱轨能量随机分析理论为基础,提出了制定预防列车脱轨的桥梁横向刚度限值的新方法。
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  “桥梁横向刚度限值”译为未确定词的双语例句
     In the paper, the dynamic performances of the speed increase coach are investigated. Compared with the vacant freight vehicles, the derailment factors of coaches are smaller, and the derailment safety is not a dominant factor to rate the lateral stiffness of bridge.
     研究了提速客车车辆的动力性能 ,与空载货车相比 ,客车的脱轨系数 ( Q/ P)小 ,脱轨安全度不是桥梁横向刚度限值的控制因素。
短句来源
     The fundamental problem is also pointed out in stipulating for the limit value of lateral rigidity of continuous steel truss girder bridge in the design criterion for steel structure of railway bridge in China. It is necessary to modify the limit value of lateral rigidity of railway bridge based on the theory of random energy analysis of train derailment on the bridge.
     最后,指出我国《铁路桥梁钢结构设计规范》中制订连续钢桁梁桥横向刚度限值时存在的问题,论证了按列车脱轨能量随机分析理论重新制订桥梁横向刚度限值的必要性。
短句来源
     Many derailment cases on bridge show that derailment on bridges cannot be prevented with the existing limit value of steel bridge lateral rigidity. The reason is that the train running safety on bridge cannot be analyzed by means of the existing method for bridge lateral rigidity analysis.
     多起桥上列车脱轨事故表明:现有铁路钢桥横向刚度限值不能预防列车脱轨,原因是现有桥梁横向刚度限值分析方法不能分析桥上列车走行安全性。
短句来源
     The lateral rigidity limit values determined by the new method can ensure trains to run on bridges with smoothness and comfort,and also can prevent derailment.
     该方法确定的桥梁横向刚度限值既能保证列车平稳舒适运行,又可防止脱轨。
短句来源
     (7) The re-research problems are discovered about some limited values of lateral stiffness for bridge stipulated by "Design Prescription for Railway Bridge" and some limited values of lateral vibration amplitude for bridge stipulated by "Test Prescription for Railway Bridge" .
     (7)发现了《铁路桥梁设计规范》规定的某些桥梁横向刚度限值及《铁路桥梁检定规范》规定的某些桥梁振幅限值需要重新研究的问题;
  相似匹配句对
     Study on Limit Value of Bridge Lateral Rigidity for Preventing Derailment
     预防列车脱轨的桥梁横向刚度研究
     Study on limiting value and rational distribution of vertical and lateral rigidity for mid-and small-span high speed railway bridge
     高速铁路中小跨度桥梁竖、横向刚度及合理分布的研究
短句来源
     Analysis of Lateral Rigidity Limit Value for Railway Steel Bridge
     铁路钢桥横向刚度分析
短句来源
     A Research over the Limit Value Standard for Transversal Deformation of Railway Bridges
     铁路桥梁横向变形标准问题的研究
短句来源
     Based on energy random analysis theory for derailment,a new method for analyzing the limit value of bridge lateral rigidity for derailment prevention is established.
     基于列车脱轨能量随机分析理论,提出新的铁路桥梁横向刚度分析方法。
短句来源
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Aimed at the two types of high speed railway long span steel bridge-slab truss composite system and arch truss composite system, an analysis of random vibration response of time dependant train bridge system has been made in detail. Taking into account of running safety (expressed as derailment coefficient Q/P <0 88,wheel load variance Δ P/P <0 60), the relation curve between the maximum lateral Sperling comfort criteria Wz.max and the width B of truss are drawn at various speeds of single and double...

Aimed at the two types of high speed railway long span steel bridge-slab truss composite system and arch truss composite system, an analysis of random vibration response of time dependant train bridge system has been made in detail. Taking into account of running safety (expressed as derailment coefficient Q/P <0 88,wheel load variance Δ P/P <0 60), the relation curve between the maximum lateral Sperling comfort criteria Wz.max and the width B of truss are drawn at various speeds of single and double track operations on bridge respectively. In accordance with the allowable lateral Sperling comfort criteria W H z .max 3 0, the width B of truss is determined, which is just the allowable width B of bridge. The transverse stiffness limitation indexes-width span ration of bridge are then obtained. The research achievements obtained in this paper can be referred in the design of high speed railway long span steel bridge.

本文针对高速铁路大跨度钢桥板桁或拱桁组合体系两种主要桥式 ,对列车与桥梁时变系统的随机振动响应作了较详细的分析。在确保桥上列车安全的前提下 ,分别按桥上双线列车对开与单线行车工况绘制各种车速下车辆横向最大斯佩林舒适度指标WHz max与桁宽B的关系曲线 ,从这些曲线中找出对应于容许最大斯佩林舒适度指标WHz max=3 0的桥宽B ,即为桥梁在相应行车工况下的容许最小宽度 ,其除以桥梁各跨的跨长 ,得出了桥梁的横向刚度限值———桥梁容许极限宽跨比 [B/L]。本文研究成果对高速铁路大跨度钢桥的设计具有一定的参考作用。

In the paper, the dynamic performances of the speed increase coach are investigated. Compared with the vacant freight vehicles, the derailment factors of coaches are smaller, and the derailment safety is not a dominant factor to rate the lateral stiffness of bridge. Based on the real bridge testing dada, vehicle bridge dynamic coupling action of the existing steel railway bridges is analyzed. The results show that when the speed increase passenger vehicles pass through a half trough truss bridge or a steel...

In the paper, the dynamic performances of the speed increase coach are investigated. Compared with the vacant freight vehicles, the derailment factors of coaches are smaller, and the derailment safety is not a dominant factor to rate the lateral stiffness of bridge. Based on the real bridge testing dada, vehicle bridge dynamic coupling action of the existing steel railway bridges is analyzed. The results show that when the speed increase passenger vehicles pass through a half trough truss bridge or a steel plate girder bridge at a speed between 140 km·h -1 and 160 km·h -1 , the vehicles have sufficient safety derailment. The vehicles behave in a good riding comfort. The lateral amplitude of the mid span of the bridges increases with the speed of the passing vehicles. However the absolute values of the maximum amplitude are rather small and within the limit proposed in the rating code (1978). The vertical resonance character of a steel plate girder bridge with 32 m in span is also analyzed. The vertical resonance is found not the dominant factor in the vertical stiffness of the bridge, because the resonance does not increase the maximum dynamic deflections in the span. Finally, the phenomenon of the jump point in the lateral amplitude of the steel bridge is analyzed. It is suggested that the CWR rails orjoint frozen rails should be used to avoid the jump point in the lateral amplitude when the vehicles pass through the bridges at a speed over 140 km·h -1 .

研究了提速客车车辆的动力性能 ,与空载货车相比 ,客车的脱轨系数 ( Q/ P)小 ,脱轨安全度不是桥梁横向刚度限值的控制因素。根据实测试验数据和车桥耦合振动理论分析 ,当提速客车以 14 0 km· h- 1和 160 km· h- 1的车速通过限速半穿式钢桁梁桥及下承钢板梁时 ,车辆具有富裕的脱轨安全度 ,车辆舒适度达到良好等级 ;桥梁跨中横向振幅 Amax随车速增加增大 ,但 Amax的绝对值较小 ,未超过 1978年检规的参考限值。本文分析了提速客车以 160 km· h- 1 的车速通过 3 2 m下承式钢板梁桥时的竖向共振特性 ,竖向共振没有使主梁动挠度最大值增加 ,不是桥梁竖向刚度的控制因素。文章最后讨论了钢桥横向振幅出现跳跃点的现象 ,建议当过桥车速超过 14 0 km· h- 1 时应采用无缝线路或采取桥上轨缝冻结措施

Using automatic control theory,mechanical mechanism of derailment of train running on a bridge was discussed.It is found that the derailment results from losing stability of transverse vibration of train-bridge time-variant system.According to the theory of random energy analysis of train derailment on the bridge,a derailment case of freight train running on Youshui Bridge in Jiaoliu line was calculated and analyzed,respectively.The calculated results are corresponded to the real results,and the time history...

Using automatic control theory,mechanical mechanism of derailment of train running on a bridge was discussed.It is found that the derailment results from losing stability of transverse vibration of train-bridge time-variant system.According to the theory of random energy analysis of train derailment on the bridge,a derailment case of freight train running on Youshui Bridge in Jiaoliu line was calculated and analyzed,respectively.The calculated results are corresponded to the real results,and the time history curves of vibration response of the system were obtained when the train derails.Meanwhile,before reinforcing the bridge,the suggested limit value of velocity for preventing train on the bridge from derailment was presented,which is consistent with the limit velocity value obtained by field test.The fundamental problem is also pointed out in stipulating for the limit value of lateral rigidity of continuous steel truss girder bridge in the design criterion for steel structure of railway bridge in China.It is necessary to modify the limit value of lateral rigidity of railway bridge based on the theory of random energy analysis of train derailment on the bridge.

结合自动控制理论,研究了桥上列车脱轨的力学机理,发现桥上列车脱轨是列车-桥梁时变系统横向振动丧失稳定的结果。根据桥上列车脱轨能量随机分析理论,对焦柳线酉水大桥上货物列车是否脱轨进行了计算和分析,并得到了列车脱轨时此系统振动响应的时程曲线;同时,提出了该桥在不采取加固措施的条件下预防列车脱轨的限速建议值,该值与该桥实车振动试验所确定的限速值一致。最后,指出我国《铁路桥梁钢结构设计规范》中制订连续钢桁梁桥横向刚度限值时存在的问题,论证了按列车脱轨能量随机分析理论重新制订桥梁横向刚度限值的必要性。

 
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