Taking Changjiang tunnel project in Shanghai as the background, this presentation systematically describes critical techniques of structure design on super large, extra longtunnel.
本报告以上海长江隧道为工程背景，系统地阐述了超大特长隧道结构设计的关键技术。
2
Design code and key technical points for main tunnel and parallel heading of East Qinling Super-longTunnel are introduced.
介绍东秦岭特长隧道工程正洞及平行导坑的设计标准、施工技术要点。
3
Elastic monolithic track bed was used for East Qinling Super-longTunnel for its good elasticity, less maintenance and low cost.