Research purposes: By analyzing the effect on impact force between wheel and rail by track irregularity, technical evidences on limit of irregularity on rail welded joints are provided.

研究目的：为了研究轨道不平顺对轮轨作用力的影响，从而为钢轨焊接接头不平顺限值提供技术依据。

youdao

When a turnout is connected with CWR through welded joints, the longitudinal rail temperature force ACTS directly on the frog and the switch section along with the variation of rail temperature.

道岔与无缝线路焊接后，随着轨温的变化，长钢轨纵向温度力将直接作用于道岔的撤叉和转撤部分。

youdao

According to fatigue damage accumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.

依据疲劳损伤累积理论，确定了公轨两用钢桁桥轨道横梁与整体节点连接头验证性疲劳试验的试验荷载。

youdao

In track inspections in the months that followed, employees said the replacement rail should be welded into place, not bolted, he said.

WSJ: Probe of Metro-North Derailment in Connecticut Focuses on Rail