北京南水北调配套工程隧洞衬砌结构型式分析

Comparison and Selection of Shield Tunnel Lining in the Auxiliary Project in Beijing for the South-to-North Water Transfer Project

在北京市南水北调配套工程输水隧洞设计中,为了选择适合北京地区工程实际情况的合理衬砌结构型式,做到工程安全、经济合理、工期有保障,通过调研和考察国内外一些典型工程应用实例,总结了盾构输水隧洞衬砌结构常见结构型式的使用条件、特点和施工工期等。通过对多种衬砌型式进行比较,认为外衬采用盾构管片、内衬采用常规钢筋混凝土的结构型式是比较适合在北京市南水北调配套工程输水隧洞中采用的。

By researching and investigating some typical project examples in the design of the Auxiliary Project in Beijing for the South-to-North Water Transfer Project, the applicable conditions, feature and construction period of shield tunnel was summarized.This contributed to selecting reasonable lining, ensuring project safety, economic rationality and assuring completion on schedule.After comparing several lining forms,the double composite lining with the shield tunnel lining outside and the reinforced concrete lining inside was chosen in the Auxiliary Project in Beijing for the South-to-North Water Transfer Project.