School of Civil Engineering and Architecture, Central South University, Changsha 410075,China
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文章历史+
收稿日期
修回日期
出版日期
1900-01-01
1900-01-01
2011-10-25
发布日期
2011-10-25
摘要
运用列车脱轨能量随机分析理论分析了金温线武义江桥列车走行性。计算结果表明尽管该桥横向振幅超过《检规》行车安全限值,但列车走行安全性、平稳性与舒适性有保障,在现行行车条件下,不需要对该桥采取加固或限速措施。对比超限桥梁横向振幅与《检规》行车安全限值可知,现有的桥梁横向振幅行车安全限值过于严格。基于列车脱轨能量随机分析理论,提出了铁路桥梁行车安全指标分析方法。具体内容为:确定桥梁跨中横向振幅作为梁墩系统行车安全判别参数,计算找出保证列车安全、平稳及舒适运行的临界梁墩系统,计算出临界梁墩系统跨中横向振幅作为桥梁行车安全限值。算出了金温线武义江32 m 预应力混凝土T形梁桥横向振幅行车安全限值为L/6200,研究成果已被金温铁路公司采纳。
Abstract
The running performance of train on Wuyijiang bridge is analyzed with energy random analysis theory for derailment. The calculated result shows that though the lateral amplitude exceeds the limit value of traffic safety given by code, the running safety , smoothness and comfort of train on Wuyijiang bridge can be guaranteed with the existing operation condition, and the measurement of rate-limiting or reinforcement is not needed to be taken for this bridge. By comparison between the lateral amplitude of the bridge and the limit value of traffic safety, it can be seen that the existing limit value of traffic safety of the lateral amplitude is too conservative. A method for establishing index of traffic safety for railway bridge is proposed on the basis of the analysis theory for train derailment, and the detailed contents are as follows. The lateral amplitude on the middle of beam is determined as index for traffic safety for the system of beam and pier. The critical system of beam and pier with which the running safety, smoothness and comfort of train can be guaranteed is determined. The lateral amplitude of critical system of beam and pier is calculated and determined as limit value for traffic safety. The limit value of lateral amplitude for traffic safety for Wuyijiang bridge is determined as L/6200, and the research findings have been applied by Jinwen railway corporation.
ZHOU Zhi-hui;ZHANG Jun;QIN Wen-xiao;ZENG Qing-yuan.
Study on Running Performance of Train and Index of Traffic Safety of Wuyijiang Bridge on Jinwen Line[J]. Journal of Vibration and Shock, 2011, 30(10): 9-13