反向曲线铁路桥梁车桥耦合动力分析研究
发布时间：2018-08-31 09:03
【摘要】：研究目的:铁路桥梁设在反向曲线上时,相关规范要求需进行充分论证。本文以某车站扩能改造工程中由于受到地形条件限制而设计的反向曲线铁路桥梁为例,采用MSC.PATRAN和ADAMS/RAIL分析软件,分别建立完整的桥梁和列车三维空间模型,分析CRH1动车组在不同车速条件下通过该桥的车桥耦合振动情况。研究结论:(1)通过对桥梁各跨的纵、横向位移,加速度以及脱轨系数、轮重减载率、车体加速度、Sperling舒适性指标等动力性指标计算结果的分析可以得到:CRH1动车组以70~90 km/h速度通过该反向曲线铁路桥梁时,车辆的脱轨系数和轮重减载率随着车辆的行驶速度增加而增加,桥梁各跨的竖向和横向振动位移较小,桥梁竖向和横向振动加速度小于规范规定的限值;(2)该桥梁具有较大的纵、横向刚度,满足列车运行的安全性及舒适性要求;(3)由于受到地形条件限制而设计的反向曲线桥梁方案是可行的;(4)本研究成果能够为位于反向曲线的铁路桥梁车桥耦合振动研究提供参考。
[Abstract]:Research purpose: when the railway bridge is located on the reverse curve, the requirements of the relevant specifications need to be fully demonstrated. In this paper, taking the reverse curve railway bridge designed due to the limitation of terrain condition in a station capacity expansion project as an example, using MSC.PATRAN and ADAMS/RAIL analysis software, the complete three-dimensional space model of bridge and train is established, respectively. The coupling vibration of CRH1 EMU through the bridge under different speed conditions is analyzed. The conclusions are as follows: (1) through the longitudinal and lateral displacement, acceleration and derailment coefficient of each span of the bridge, the wheel load reduction rate, The analysis of the calculation results of the dynamic performance indexes such as acceleration and Sperling comfort index of the car body can be obtained when the mass CRH1 EMU passes through the reverse curve railway bridge at the speed of 70 ~ 90 km/h. The vehicle derailment coefficient and wheel load reduction rate increase with the increase of vehicle speed, the vertical and lateral vibration displacements of each span of the bridge are smaller, and the acceleration of the vertical and transverse vibration of the bridge is less than the limit value stipulated in the code. Transverse stiffness, To meet the safety and comfort requirements of train operation; (3) the design of reverse curve bridge scheme is feasible due to the constraints of terrain conditions; (4) the results of this study can provide a reference for the study of vehicle-bridge coupling vibration of railway bridge located in reverse curve.
【作者单位】： 中铁二院工程集团有限责任公司;
【分类号】：U441.3;U448.13
本文编号：2214527
[Abstract]:Research purpose: when the railway bridge is located on the reverse curve, the requirements of the relevant specifications need to be fully demonstrated. In this paper, taking the reverse curve railway bridge designed due to the limitation of terrain condition in a station capacity expansion project as an example, using MSC.PATRAN and ADAMS/RAIL analysis software, the complete three-dimensional space model of bridge and train is established, respectively. The coupling vibration of CRH1 EMU through the bridge under different speed conditions is analyzed. The conclusions are as follows: (1) through the longitudinal and lateral displacement, acceleration and derailment coefficient of each span of the bridge, the wheel load reduction rate, The analysis of the calculation results of the dynamic performance indexes such as acceleration and Sperling comfort index of the car body can be obtained when the mass CRH1 EMU passes through the reverse curve railway bridge at the speed of 70 ~ 90 km/h. The vehicle derailment coefficient and wheel load reduction rate increase with the increase of vehicle speed, the vertical and lateral vibration displacements of each span of the bridge are smaller, and the acceleration of the vertical and transverse vibration of the bridge is less than the limit value stipulated in the code. Transverse stiffness, To meet the safety and comfort requirements of train operation; (3) the design of reverse curve bridge scheme is feasible due to the constraints of terrain conditions; (4) the results of this study can provide a reference for the study of vehicle-bridge coupling vibration of railway bridge located in reverse curve.
【作者单位】： 中铁二院工程集团有限责任公司;
【分类号】：U441.3;U448.13
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