【摘要】 结合双洞双向8车道大跨度公路隧道的设计和施工,从技术可行性、经济效益和社会效益方面对3个备选方案进行了比较,并采用综合评分法进行了定量化评价,推荐采用暗挖分离式小净距隧道方案,可以在确保隧道交通功能的前提下,实现经济效益和社会效益的双赢。更多还原

【Abstract】 Design and construction technologies of two-tube highway tunnel with eight lanes are not well mastered at home and abroad and referenced projects can hardly been found.Three schemes,in- cluding separated-neighborhood tunnel,multi-arch tunnel and cut-and-cover tunnel are put forwards in this project and are compared in such three aspects as technical feasibility,economic benefit and social benefit.Comprehensive scoring method is used to evaluate quantificationally each scheme.According to the evaluation result,the scheme of separated-neighborhood tunnel is nominated by experts.This comparison technical course will not only ensure the basic traffic function of the tunnel,but also pro- duce economic benefit and social benefit at the same time.更多还原