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柔性路面的拱度和刚性路面的横向坡度是路面使用品质的重要指标之一。对路面拱度的评定,比平整度更为复杂。一般在设计中,除要求拱度之外,同时还得指定构成拱度线型的方程式。诸如三次抛物线、二次抛物线以及其它型式的修正抛物线;在刚性路面中,除规定两侧直线外还要指定中线那一段的圆弧半径。无论怎样精心施工,都不可能没有误
The camber of the flexible pavement and the horizontal gradient of the rigid pavement are one of the important indexes of pavement quality. Evaluation of the camber of pavement is more complicated than flatness. Generally in the design, in addition to the requirement of camber, but also have to specify the camber line of the equation. Such as cubic parabolas, quadratic parabolas and other types of modified parabolas; in rigid pavements, in addition to the provisions of both sides of the straight line but also to specify the radius of that section of the arc. No matter how carefully constructed, are not without error