立交匝道的超高与横坡

Super High and Cross Slope of Ramps in Intersection

为配合建设部《城市道路交叉设计规程》的编写 ,本文根据目前道路超高与横坡设计的习惯做法 ,结合国内外已取得的成功经验 ,针对城市立交匝道 ,从道路条件和行驶舒适性分别阐述了最大横坡和横向摩阻系数的取用原则 ,对比了超高与横向摩阻系数在平衡车辆行驶于弯道所产生的侧向离心力的各种组合及协同作用 ,总结提出了适合我国的立交匝道超高与横坡设计的各项设计指标和设计方法。

In order to cooperate the compilation of 'Rules of Urban Road Intersection Design'of the Ministry of Construction,the paper states the principle of the maximum cross slope and crosswise friction coefficient,respectively from the road conditions and travelling adaptability to the urban traffic ramps,in combination of the successful experiences obtained at home and abroad as well as in accordance with the common dosage of the present road super high and cross slope design,It compares the various kinds of combination and cooperation action of lateral centrifugal force by super high and crosswise friction coefficient,when the balance vehicles travel at curves.It also sums up and puts forward the various items of design targets and design methods which are suitable to the super high and crosswise slope design of intersection ramps in China.