摘要
利用二级公路改造提升为一级公路是改善当地通行能力、促进经济社会发展的较低成本途径,改建过程利用单线公路隧道改建为路线单幅隧道方案有较大经济意义。本文结合某改建工程中对二级公路单线隧道改建为一级公路单幅隧道的设计方案,从隧道速度的协调程度和平纵线形指标优劣、隧道横断面改造形式、交通标志标线的设置及完善等方面,建立利用既有单线公路隧道改建为路线单幅隧道方案的安全性评价。
The upgrading of secondary highways to the primary highways is a lower cost way to improve local traffic capacity and promote economic and social development.During the reconstruction process,it is of great economic significance to use single-track highway tunnels to transform into single-span tunnels.This article combines the design plan of a secondary highway single-track tunnel converted into a primary highway single-span tunnel in a reconstruction project,the safety evaluation of the scheme of using the existing single-track highway tunnel to be converted into a single-span tunnel is established from the coordination level of tunnel speeds,the pros and cons of vertical alignment indicators,the transformation way of the tunnel cross section,the setting and improvement of traffic signs and markings.
作者
敖宗岳
周洁
AO Zong-yue;ZHOU Jie(Linhai Transportation Investment Group Co.,Ltd.,Linhai 317000,China)
出处
《价值工程》
2020年第29期121-123,共3页
Value Engineering
关键词
单线隧道
改建
单幅隧道
安全性评价
single-track tunnel
reconstruction
single-span tunnel
safety evaluation
作者简介
敖宗岳(1992-),男,浙江临海人,本科,助理工程师,研究方向为公路工程。
