基于并行计算的大跨度斜拉桥行车安全分析

杜新光;金先龙;陈向东

振动与冲击 ›› 2010, Vol. 29 ›› Issue (7) : 5-8.

PDF(1394 KB)
PDF(1394 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (7) : 5-8.
论文

基于并行计算的大跨度斜拉桥行车安全分析

  • 杜新光1;金先龙1,2;陈向东1
作者信息 +

Simulation Analysis of Running Safety on Long Span Cable-stayed Bridge Based on Parallel Computation

  • DU Xin-guang1; JIN Xian-long1,2 ;CHEN Xiang-dong1
Author information +
文章历史 +

摘要

采用有限元分析方法对轻轨车辆在大跨度双层斜拉桥上的行车安全进行了评估。建立了斜拉桥与轻轨车辆耦合振动的精细三维有限元模型,其中桥梁模型包括主塔、过渡墩、辅助墩、支撑桩、土体、斜拉索以及桥面系统等;轻轨车辆模型包括车体、转向架、轮对及弹簧阻尼系统等,整体有限元模型的单元与节点数均超过百万。设计了基于接触均衡的并行分区算法,在上海超级计算中心的曙光4000A上完成了仿真计算,解决了模型庞大带来的求解困难。求得了轻轨车辆在大跨度斜拉桥上运行的轮轨横向和垂向接触力,通过计算最高车速下单车匀速、双线汇车两种工况的轮重减载率及脱轨系数,分析了桥梁的行车安全,结果为斜拉桥的安全设计提供了参考依据。

Abstract

Based on the Finite Element Analysis Method, the running safety of light rail train on long span double deck cable- stayed bridge is evaluated. The total element and nodes amount of the refined 3D couple vibration finite element model, which the bridge is made up of main truss, cable, tower, piers, cap, piles, and soil and the light rail vehicles include the car body, bogie, wheel-set, and spring-damp system, is over 2.2 million. The model is solved on Dawning 4000A supercomputer of Shanghai Supercomputer Center based on the Contact Balance Bisection (CBB) algorithm for parallel computing and the vertical and transverse wheel-rail interaction force are obtained. According to the derailment coefficient and the wheel load reduction rate under maximum velocity, the running safety of light rail train is analyzed, which provides the reference for the safety design of long span cable-stayed bridge.

关键词

大跨度斜拉桥 / 行车安全 / 并行计算 / 仿真分析

Key words

Long span cable-stayed bridge / Running safety / Parallel computing / Simulation analysis

引用本文

导出引用
杜新光;金先龙;陈向东 . 基于并行计算的大跨度斜拉桥行车安全分析[J]. 振动与冲击, 2010, 29(7): 5-8
DU Xin-guang;JIN Xian-long;;CHEN Xiang-dong. Simulation Analysis of Running Safety on Long Span Cable-stayed Bridge Based on Parallel Computation[J]. Journal of Vibration and Shock, 2010, 29(7): 5-8

PDF(1394 KB)

2243

Accesses

0

Citation

Detail

段落导航
相关文章

/