This paper introduces a method of longitudinal slope design for vertical alignment smoothly transition.

为使路线交叉连接部处纵面线形平顺过渡，介绍了一种纵面坡度设计方法。

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In the construction of expressway in mountain area, the contradiction of the maximum longitudinal slope with engineering's volume and cost is very prominent.

山区高速公路建设中，路线最大纵坡与工程量、工程造价的矛盾十分突出，若严格执行标准会出现大量高填、深挖路基、长大桥梁及隧道。

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Meanwhile, analyze the impact of wheel drive force on the structure stress under the situation that vehicle pass the composite bridge deck with longitudinal slope.

同时，对车辆通过带纵坡的复合桥面铺时车轮驱动力对结构受力的影响进行了分析。

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