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公路横断面设计常常被人们看作是最简单的,可是利用计算机来设计横断面,却是平、纵、横设计中最困难,也是编制程序中最关键的部分。首先,如同平时的横断面戴帽那样,在不同的桩号上,可能遇到挖方断面,填方断面,半填半挖断面;在不同地质条件下,填挖边坡将有变化;有时需要设置路肩挡墙,有时可以只设坡脚挡墙,挡墙的形式也是多种多样;当设计较小半径的弯道时,还要考虑设置超高和加宽等等。这样,在编制程序时,就要仔细进行判别,以确定合理的断面形式。
Highway cross-section design is often seen as the most simple, but the use of computer to design cross-section, but it is flat, vertical and horizontal design of the most difficult, but also the most critical part of the preparation of the program. First of all, as usual cross-section wearing a hat, excavation section, fill section, semi-fill and semi-dig section may be encountered on different stanchions; filling and dredging slopes will change under different geological conditions; sometimes it is necessary Set the shoulder retaining wall, sometimes only the slope foot retaining wall, wall form is also diverse; when designing a smaller radius of the bend, but also consider setting the high and widening and so on. In this way, in the preparation of the program, we must carefully determine in order to determine a reasonable cross-sectional form.