高速公路改扩建工程超高设置探讨  

Discussion on Superelevation Setting of Expressways Reconstruction and Expansion Project

作　　者：谢可 赵百磊[1] XIE Ke;ZHAO Bai-lei(CCCC Second Highway Consultants Co.Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉市430056

出　　处：《公路》2024年第7期256-261,共6页Highway

摘　　要：为满足高速公路改扩建工程中充分保障驾驶安全和充分利用既有工程的目标,结合改扩建工程特点,总结了改扩建工程超高设置原则,探讨了改扩建工程中圆曲线超高及超高过渡段设置方式。提出了采用横向力系数控制改扩建工程中圆曲线超高值的方法,进而判断能否维持现状横坡;当既有老路回旋线长度不足时可将部分超高过渡段布设在直线上,以此解决现状回旋线长度小于改扩建所需超高过渡段长度的问题;通过在改扩建工程超高过渡段增设路拱线的方法,改善超高过渡段排水不畅问题。所提出的设计思路在京港澳高速、沈海高速改扩建工程部分路段应用中取得了积极效果,可为其他改扩建工程超高及过渡段设计提供参考。In order to fully ensure driving safety and make full use of the existing project during expressway reconstruction and expansion projects,in this paper the principles for setting superelevation in reconstruction and expansion projects are summarized based on the characteristics of such projects,and the setting methods for circular curve superelevation and superelevation transition sections are explored.It is proposed to control the superelevation value of circular curves in reconstruction and expansion projects by using the lateral force coefficient so as to determine whether the current cross slope can be maintained.When the length of the existing spiral is insufficient,some superelevation transition sections can be arranged on straight lines to solve the problem that the length of the existing spiral is less than the length required for superelevation transition sections in reconstruction and expansion projects.By adding road camber lines to the superelevation transition sections in reconstruction and expansion projects,the problem of poor drainage in'superelevation transition sections can be improved.The proposed design ideas have achieved positive results in some sections of the Beijing-Hong Kong-Macao Expressway and Shenyang-Haizhou Expressway reconstruction and expansion projects,and can provide reference for the design of superelevation and transition sections in other reconstruction and expansion projects.

关 键 词：高速公路 改扩建工程 圆曲线超高 超高过渡段 横向力系数 双路拱 

分 类 号：U418.8[交通运输工程—道路与铁道工程] U412.33