厦门机场路隧道双连拱与小间距工法设计比选

小间距隧道是双洞隧道净距介于连拱隧道与规范要求上下行分离式隧道最小净距之间的一种特殊隧道结构形式。文章以厦门机场路高速公路隧道为依托,对隧道双连拱、小间距工法进行了施工过程的动态数值模拟。以地表沉降作为主要控制目标,对不同的施工方案进行了优化分析,得出采用小间距断面的方案优于双连拱方案,数值模拟过程中地下结构和周围环境没有安全隐患。这为工程的顺利实施提供了依据和指导,可供类似工程参考。

THE DESIGN AND COMPARION BETWEEN DOUBLE-ARCH TUNNEL AND LITTLE NEIGHBORING SPACE RUNNEL IN XIAMEN AIRPORT LINE

With the Xiamen airport line highway tunnel as a practical example,the paper studies dynamic numerical simulation during construction of double-arch and little neighboring space tunnel.Different construction projects are optimized based on ground settlement,the scheme of little neighboring space is better than that of double-arch,The important conclusion that underground configuration and ambience are safe is arrived.The basis and guidance are supplied for real engineering and some meaningful conclusions ar...