rail impact

The results show that the vertical wheel/ rail impact can excite space vibration between wheel and rail, which leads to rail corrugation.

结果表明，轮轨垂向冲击可激起轮轨间横向与纵向的相对振动，从而导致轮轨磨耗数以较高频率变化，使钢轨产生波浪形磨耗。

Finite Element Analysis of Contact-Impact of Wheel/ Rail at Rail Gap

钢轨轨缝接触-冲击的有限元分析

Because the reserved space of the seamless rail is very short, the changing temperature will bring more greater impact to the seamless rail than the common rail.

由于无缝钢轨的预留间隙很小，因此温度变化对无缝钢轨的影响比传统钢轨要大的多。

Tensile, impact and fatigue test is carried out separately for rail joint welded with gas-pressure welding. tn addition to these, fracture and metallography analysis is accomplished, too. The factors affected the quality of gas-pressure welding joint for rail are approached.

对钢轨气压焊接头进行了冲击、拉伸及疲劳试验，并进行了断口及金相分析，探讨了对钢轨气压焊接头质量的影响因素。

Approach on Noise Impact Criteria for Urban Rail Transit Projects in America

美国城市轨道交通工程噪声环境影响评价标准探析

Qinhuangdao South Station is currently experiencing the development of competitive supply, freight single function, transport organizations and unscientific, the Port Rail multi-modal suited and so on, these problems have an impact on the development of Qinhuangdao South Station cargo barriers.

秦皇岛南站目前的发展遇到了货源竞争激烈、货运功能单一、运输组织不科学、港口铁路联运模式不适应等问题，这些问题已经成为影响秦皇岛南站货运发展的阻碍。