这一结论为公路钢桥疲劳设计标准和规范的制定，奠定了坚实的理论基础，提供强有力的数据支撑。

This conclusion provided a solid theoretical basis and the strong theoretical basis for the specifications formulation for fatigue design of highway steel Bridges.

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对几种常用膨胀节设计标准在适用范围、应力评定、失稳校核和疲劳寿命计算等方面进行了对比分析。

Several standards for the design of expansion joint were compared in terms of application scope, stress evaluation, buckling check and fatigue life calculation.

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疲劳是沥青路面设计标准之一，沥青混凝土的疲劳失效与沥青层底拉应变值的大小相关。

Fatigue is one of criterions in asphalt concrete pavement design, failure of asphalt concrete fatigue has correlation with the magnitude of tensile strain of asphalt layer bottom.

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