高速公路改扩建设计分析

Design Analysis of Expressway Reconstruction and Expansion

根据我国高速公路交通的现状,总结出我国高速公路改扩建设计需要遵循保证既有道路的正常运行,尽量减少需要拆除的房屋数量,对工程可持续发展有利,便于养护等基本原则。同时,从路基路面设计、路基边坡设计、路线调研设计、改扩建方式的选择、公路综合管线设计等方面分析了高速公路改扩建设计的要点。使设计方案既满足相应道路等级的技术指标,又最大限度地利用原有工程,同时减少项目投资,提高高速公路的社会与经济效益。

According to the current situation of highway traffic in our country,it is concluded that the reconstruction and expansion design of highway in China should follow the basic principles of ensuring the normal operation of the existing highway,minimizing the number of houses that need to be demolished,be beneficial to the sustainable development of the project and convenient for maintenance.At the same time,the key points of expressway reconstruction and expansion design are analyzed from the aspects of roadbed pavement design,roadbed slope design,route research and design,selection of reconstruction and expansion mode,highway comprehensive pipeline design,etc.,so that the design scheme not only meets the technical indicators of the corresponding road grade,but also makes maximum use of the original project,reduces project investment,and improves the social and economic benefits of expressway.