在运用断裂力学模式所建立的故障模型基础上，该法用铁道部部颁换轨标准处理寿命估算。

Based on a failure model of fracture mechanics pattern, this new method deals with the life estimation in the light of the standard promulgated by the Railway Ministry for rail replacement.

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疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。

Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.

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并从断裂力学的角度综述了反射裂缝在纵向、横向扩展的模式及其对路面的破坏。提出了多种防治措施与处理方法。

Then its extending on latitude and longitude direction and its destruction are stated here on the basis of fracture mechanics. Finally, the paper launched out a few new procedures on how to preve…

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