公路桥梁伸入隧道方案探讨  

Discussion about the Option of Highway Bridges Extending into Tunnels

作　　者：曹校勇[1] 张武祥[1] 刘杨[1] 韩常领[1] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710075

出　　处：《现代隧道技术》2010年第2期33-36,共4页Modern Tunnelling Technology

摘　　要：包(头)茂(名)高速公路陕西境柞水至小河段出现多处桥隧相接,文章对项目中采用的桥梁伸入隧道方案进行了分析,介绍了桥梁伸入隧道方案设计施工中可能出现的问题及处理措施,如隧道断面加宽、隧道内排水系统出水口通畅、洞外管线进洞、隧道和桥台施工干扰、桥梁跨径布置等。桥梁伸入隧道方案可避免洞口高边坡,有利于环境保护,对开拓设计思路、提高选线的灵活性有一定的借鉴意义。Many bridges on Zhashui to Xiaohe section of Baotou to Maoming expressway in Shanxi province are connected with tunnels.This paper analyses the option of bridges extending into tunnels,proposes measures such as tunnel cross-section widening,unblocked tunnel drainage system outlet,pipelines extending into tunnels,avoiding construction interference of bridge abutment and tunnel,bridge span arrangement etc.to solve problems encountered in design and construction of bridges extending into tunnels.Option of bridges extending into tunnels can not only avoid high slope,protect environment,but also gives guidelines for developing design idea and improving the flexibility of route investigation.

关 键 词：高速公路 桥梁进洞 方案分析 技术措施 

分 类 号：U453.1[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]