摘要
结合发生过脱轨事故的桥梁,定性分析了桥梁横向刚度对列车脱轨的影响。进一步运用列车脱轨能量随机分析理论,对比分析了老滦河桥上、下行线上的列车走行安全性,分析了增大钢板梁主梁中心距对提高桥梁抗脱轨能力的影响。分析结果表明,桥梁横向刚度不足是引起桥上列车脱轨的主要原因。最后提出,预防桥上列车脱轨的根本途径是使桥梁具备满足行车安全需要的桥梁横向刚度,即加固可能发生脱轨事故的既有线桥梁,或对拟建桥梁制定预防列车脱轨的桥梁横向刚度标准。
Due to train derailments on bridges, influence on train derailment on bridge caused by bridge lateral rigidity is analyzed. With the theory of energy random analysis of train derailment, the security of moving train on up line and down line of Laoluanhe bridges is analyzed contrastively, and the influence on improving resisting derailment ability of bridges by widening the distance between two main beams of the deck steel plate girder bridge is studied. A conclusion that shortage of bridge lateral rigidity is the main cause of derailment on bridges has been drawn. Finally, the approach to prevent derailment on bridges is presented. For the existing bridge on which derailment may happen, reinforce measure may be made on them, and the criterion on bridge lateral rigidity which can prevent derailment may be set up for the bridges to be built.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2005年第2期30-33,共4页
Journal of Railway Science and Engineering
基金
国家自然科学基金资助项目(50078006)
铁道部科技开发计划项目(2001G029
2003G043)
