平原区高速公路纵断线形优化策略探析

Analysis of Vertical Alignment Optimizing Tactics for Expressway in Plain

由于平原区地势平坦,沟渠纵横,河道众多,同时平原地区经济发达,路网也相应发达,故需要修建的构造物较多。构造物类型的选择与布置,不仅对纵断面线形设计的工程造价有着举足轻重的作用,还对线形设计效果及其使用质量的优劣有着重要影响。该文对平原区高速公路纵断面线形优化策略进行了探析,对构造物的选取与布置进行综合衡量,并选择适当的纵断线形技术指标与合理的交通组织,来对纵断线形进行优化,以期实现在工程造价最经济的同时,纵断线形设计效果及其使用质量达到最佳。

Owing to the smooth terrain, vertical and horizontal ditches, and many rives in the plain regions, at the same time, the flourishing economy and the relatively developed road networks in the plain regions, there are more structures to be built and constructed. The selection and arrangement of the structure types not only play the pivotal role in the engineering construction cost of the vertical alignment design, but also have the important influence on the effect of alignment design and its good and bad use qualities. The article probes into and analyzes the vertical alignment optimizing tactics of the expressways in the plains, comprehensively judges the selection and arrangement of the structures, and selects the proper vertical alignment technical indexes and the reasonable traffic organization to optimize the vertical alignment for realizing the most economical engineering construction cost at the same time, reaching the optimum vertical alignment design effect and its use quality.