补水管道顶管设计方案研究

Studing the Design Scheme of Pipe Jacking to Cross the Expressway from Underground,to through the Subway and Cut Across the Bridge Pier

随着城市交通的多元化及城市管网日益密集,管道顶管下穿快速路、上穿地铁、横穿桥墩的应用在今后的工程中越来越多。文章结合南昌市水环境综合治理工程(前湖水系及乌沙河上游段)一级水力调控工程,对管道顶管下穿三清山大道、上穿南昌地铁2号线、横穿生米大桥西互通匝道桥墩的设计方案进行研究。计算结果表明:一级补水管道施工以及运营期间对隧道衬砌及生米大桥的影响非常小,其计算方法及经验可为类似工程设计提供参考。

The application of pipe jacking to cross the expressway from underground, to through the subway and cut across the bridge pier will be more and more popular in the future projects, with the diversification of urban traffic and the increasing density of urban pipe network. Based on the First class hydraulic control project of Nanchang water environment comprehensive treatment project(Qianhu river system and the upper reaches of Wusha river), In this paper the design scheme of pipe jacking to cross Sanqingshan avenue, Nanchang metro line 2 and the bridge pier of the west interchange ramp of Shengmi bridge are introduced. The results show that the influence of the construction and operation of the primary water supply pipeline on the tunnel lining and Shengmi bridge is very small. The calculation method and experience can provide reference for similar engineering design.