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我国已进入道路改扩建高峰期,路基拓宽、新老路基结合面临诸多技术难题。本项目通过多种技术手段相结合的方法,对路基拓宽工程的技术特征和工程问题、新老路基不协调变形的特点、计算方法及对路面结构的影响、拓宽路基的设计理论和方法、新老路基结合部处治的原理、方法和施工技术进行了深入系统的研究,提出了新老路基不协调变形的计算方法,为公路路基拓宽工程的设计和施工提供了技术基础。
China has entered the peak of road reconstruction and expansion, roadbed widening, the combination of old and new road is facing many technical problems. Through the combination of various technical means, the project will broaden the design theory and method of embankment for the technical characteristics and engineering problems of embankment widening project, the characteristics of uncoordinated deformation of new and old subgrade, the calculation method and the influence on the pavement structure, and new The principle, method and construction technology of the old roadbed junction are deeply and systematically studied. The calculation method for the uncoordinated deformation of the old and new subgrade is proposed, which provides the technical foundation for the design and construction of highway subgrade widening project.