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德国慕尼黑技术大学交通运输线路工程试验研究所新进行了“钢轨高弹性扣件系统对钢轨变形和荷载分布特性的影响”研究专题,历时3年,现已结束,除了用有限元法作理论研究外,还在实验室和线路上根据各种不同的钢轨扣件系统对有碴轨道的钢轨变形和荷载分布的特性进行了深入研究。首先在实验中在钢轨各个支点上进行研究,以便确定为有限元法模拟的输入参数。使用的钢轨扣件有W14(中间衬垫刚度>500 kN/mm)、W21(中间衬垫刚度<50 kN/mm)和W28。中间衬垫大都由弹性体组成。试件固定在角支点上,角度为0°~45°,垂直支点力保持60 kN。
Research Institute of Transportation Route Engineering, University of Technology, Munich, Germany, has recently carried out a research project entitled “Impact of Rail Elastic Fastener System on Rail Deformation and Load Distribution Characteristics”, which lasted for three years and is now over. Except for the finite element method Theoretical research, but also in the laboratory and the line according to a variety of different rail fastener system for ballasted track deformation and load distribution characteristics of the rail carried out in-depth study. First of all, experiments were carried out on each fulcrum of the rail to determine the input parameters for the finite element method simulation. The rail fasteners used are W14 (intermediate pad stiffness> 500 kN / mm), W21 (intermediate pad stiffness <50 kN / mm) and W28. The middle liner mostly consists of elastomer. The specimen is fixed on the angle fulcrum, the angle is 0 ° ~ 45 °, and the vertical fulcrum force is maintained at 60 kN.