摘要： <正>分别从既有路基、加宽路基及新老路基结合部三方面分析了沪宁高速公路路基加宽工程的特点，指出了路基加宽处治工程常见的病害。从软土地基处理、路基填料的选择、结合部压实度控制、土工合成材料应用等方面提出了加宽路基工程的技术对策：减少工后沉降；严格路基填料的选择与控制；控制结合部压实度；强化接合部位处治等。

Abstract: The construction situation of road landscape in old city reconstruction was analysed. Some basic principles of the improvement of road landscape are concluded and the important parts of the improvement to each different kind of roads were pointed out. The main contents and practical methods of the improvement also were given out.

中图分类号: 

• X321