Application of double-road arch in the reconstruction and expansion of eight-lane highway
In order to strengthen the pavement drainage of the two-way eight-lane highway,the application of the double-road arch method in the reconstruction of the highway.First of all,by studying the changing laws of ultra-high grades at different lanes,determine the setting of the road arch.Secondly,the specific design of two-way arches with 2％and 3％super-height is given.Finally,the safety of the two-way arch method is evaluated.The results show that in the reconstruction of the two-way eight-lane highway,setting up dual-road arches can strengthen drainage on the pavement,which has no effect on driving safety.
double-road rrchhighway renovation and expansionultra-highultra-high gradient
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