基于功能定位的公路市政化改造横断面设计研究  

Research on Cross-section Design of Highway Urbanization Reform Based on Functional Orientation

作　　者：杨永红 王杰聪 顾明恩 贺志勇[1] YANG Yonghong;WANG Jiecong;GU Mingen;HE Zhiyong(School of Civil Engineering and Transportation,State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou,Guangdong 510640,China;Key Laboratory of Highway Engineering of Ministry of Education,Changsha University of Science&Technology,Changsha,Hunan 410114,China;Guangzhou Transportation Design&Research Institute Co.,Ltd.,Guangzhou,Guangdong 511430,China)

机构地区：[1]华南理工大学土木与交通学院亚热带建筑科学国家重点实验室,广东广州510640 [2]长沙理工大学公路工程教育部重点实验室,湖南长沙410114 [3]广州市交通设计研究院有限公司,广东广州511430

出　　处：《公路工程》2021年第1期35-42,130,共9页Highway Engineering

基　　金：国家自然科学基金资助项目(51508204);亚热带建筑科学国家重点实验室开放课题(2018ZB32);长沙理工大学公路工程教育部重点实验室开放基金资助项目(kfj190201)。

摘　　要：随着我国城镇化进程的推进,周边公路逐渐被纳入城区范围,亟需对城郊公路进行市政化改造以满足市政功能和交通需求,而横断面设计是改造工程的重点和难点。以公路与城市道路的功能差异性分析为基础,将城郊公路市政化改造路段分成市政功能为主和公路功能为主两类,结合改造横断面设计原则和决策因素,研究提出了以市政功能为主的改造横断面形式,高速公路和一级公路改造横断面形式宜采用双幅路和四幅路,二、三、四级公路改造断面形式宜采用单幅路和三幅路;以公路功能为主的改造横断面形式,横断面布置形式宜在现状公路路基上进行拼接拓宽。最后,基于调研的车辆宽度和修正后的波良可夫模型计算分析小客车专用道宽度在设计速度低时可推荐选用2.8 m,中间车道宽度可适当缩窄,并给出了一条机动车道不同车道类型条件下最小宽度取值推荐表。With the advancement of China's urbanization process,the surrounding highways are gradually incorporated into the urban area,and the urbanization of suburban highways is urgently needed to meet the municipal functions and traffic needs.The cross-section design is the major difficulty of the reconstruction project.Based on the analysis of the functional differences,this paper divides the suburban highways into urbanization-modified sections and focuses on the functions of municipalities and highways.Combining the design principles and decision-making factors of the cross-section of reconstruction Function-oriented transformation cross-section forms,double-road and four-way roads should be adopted for expressway and first-grade road reconstruction cross-section forms,single-width roads and three-way roads should be adopted for second-,third-,and fourth-grade roads;The main transformation cross-section form,the cross-section layout form should be spliced and widened on the existing roadbed.Finally,based on the surveyed vehicle width and the revised Polyakov model calculation and analysis,the width of the dedicated lane for the passenger car can be recommended to be 2.8 m when the design speed is low,the width of the middle lane can be appropriately narrowed,and a recommended table of minimum width values for different types of motor lanes is given.

关 键 词：公路工程 公路市政化改造 横断面布置 机动车道宽度 

分 类 号：U412[交通运输工程—道路与铁道工程]