新老路基结合部处治技术

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。

Technologies to Treat the Junction between New and Old Subgrade

With China entering a peak era for road improvement and construction,many technical issues are confronted in terms of subgrade widening and connection between old and new subgrade.Through a combination of various technical approaches,this paper carried out a thorough and systematic research in the issues such as:(i) the technical characteristics and engineering problems of subgrade widening projects,(ii) the characteristics of inharmonious deformation between new and old subgrade,(iii) calculation method and its impacts on pavement structure,(iv) the design theories and methods of subgrade widening projects,(v) the treating principles,methods and construction technology for the junction between old and new subgrade,etc.It also proposed a calculation method for the inharmonious deformation between new and old subgrade,which provided a technological base for the design and construction of highway subgrade widening projects.