【摘要】 罗汉山隧道设计为双向八车道连拱隧道,为目前国内最大跨度公路连拱隧道。文章对超大断面连拱隧道设计的技术标准、净空断面选取、结构支护参数拟定、中墙设计、施工工法选择、施工辅助措施以及监控量测等进行总结介绍,并应用有限元数值模拟方法对支护结构的强度及围岩的稳定性进行了模拟分析,为今后相关类似超大断面公路隧道的工程设计与施工积累经验。更多还原

【Abstract】 Luohanshan tunnel has been designed as a 8-lane double-arch tunnel, the excavation width of which is the largest among highway tunnels in China. In this paper, the comprehensive introductions are given including the technical standard of design, the selection of internal cross-section, the decision of the composite lining parameters, the design of center pillar, the choice of construction methods, the assistant measures of construction, monitoring of the tunnel, and so on. Simulation analyses for the strength of support structure and the stability of surrounding rocks were carried out by finite element method.更多还原