浅议大型城市地下道路工程设计要点  

Discussion on the Design Points of Large Urban Underground Road

作　　者：吴金刚[1] 

机构地区：[1]北京市市政工程设计研究总院有限公司,100082

出　　处：《特种结构》2017年第4期71-79,共9页Special Structures

摘　　要：通过对城市地下道路设计中一些具有研究价值的设计要点进行归纳、探讨、分析和研究,为后续的城市地下道路工程提供一些可借鉴的经验。以具体工程为例,对比分析了常用明挖闭合框架结构的受力特点。对地下道路内部设置检修道的必要性、疏散通道的设置间距和疏散方式、通风方式等内容进行分析和对比。文章指出,明挖闭合框架结构采用折板框架结构具有较明显的优势,且隧道内宜设置检修道;对于盾构法地下道路,隧道内可不设置检修道以节约空间,宜采用纵横向相结合的疏散方式;城市地下道路可采用"集中排放+空气净化站"或"分散式多点排放"的方案,其中"集中排放+空气净化站"的方式可减少项目区域污染物排放量,但投资较高,建议在高端定位的大型城市中心区采用。Based on studing the valuable design points in urban underground road engineering, this paper provides some experience for the follow-up urban underground road project. Taking some special projects as ex- amples, force characteristics of four kinds of excavated and closed frame structures were analyzed. As the neces- sity of setting up the inspection road, the distance of the evacuation channel, the evacuation mode and the venti- lation mode were compared and analyzed. It is concluded that the frame structure of the open-cut closed frame is of obvious advantages, and the inspection road should be set in the tunnel. For the shield tunnel, the inspection road is not necessary to be set and the combination of vertical and horizontal evacuation should be adopted. ＂ Centralized discharge ＋ air purification station＂ and ＂decentralized multi-point emission in urban underground roads. The former which is of a higher investment can reduce the is recommended to use in high standard urban centers. programs can be used amount of pollutants. It

关 键 词：城市地下道路 施工工法 检修道设置 疏散方式 通风方式 

分 类 号：U412.373.1[交通运输工程—道路与铁道工程]