双路拱在双向八车道高速公路改扩建中的应用  

Application of double-road arch in the reconstruction and expansion of eight-lane highway

作　　者：房士伟 张太磊 FANG Shiwei;ZHANG Tailei(Shandong Provincial Communications Planning and Design Institute Group Co.,Ltd.,Shandong Jinan 250101 China;Shandong Hi-speed Engineering Consults Co.,Ltd.,Shandong Jinan 250000 China)

机构地区：[1]山东省交通规划设计院集团有限公司,山东济南250101 [2]山东高速工程检测有限公司,山东济南255000

出　　处：《山东交通科技》2024年第3期7-9,共3页

摘　　要：为加强双向八车道高速公路的路面排水能力,研究了双路拱法在高速公路改扩建中的应用。首先,通过研究不同车道位置处超高渐变率的变化规律,确定路拱的设置位置;其次,给出了超高为2%和3%的双路拱的具体设计方法;最后,对双路拱法的安全性进行评价。结果表明,在双向八车道高速公路改扩建中,设置双路拱能加强路面的排水能力,对行车安全无影响。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.

关 键 词：双路拱 高速公路改扩建 超高 超高渐变率 

分 类 号：U418.8[交通运输工程—道路与铁道工程]