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近些年,随着城市化进程加快,北京市路网建设外延不断扩大,很多道路建设项目在郊野地区。等级高、线路长的道路建设场地工程地质性质复杂多变。为了保证道路路基稳定,需要对不良地基进行处理,且同一项目中常会用到几种不同形式的地基处理方式,各处理方法均有其自身特点和最优适用条件。施工开始后,随着施工开槽将场地地层情况进一步揭示,设计人员常常要根据现场情况动态调整地基处理方案。结合北京周边机场南线、京良路等高等级城市道路设计实例,从建设场地地质条件分析入手,归纳设计中的控制因素,说明采用不同地基处理方法的设计思路和设计要点,同时对实施过程和后期效果进行评价。
In recent years, with the acceleration of urbanization, the extension of road network construction in Beijing has been continuously expanded, with many road construction projects in the rural areas. High-grade, long lines of road construction site engineering complex and complex geological changes. In order to ensure the stability of the road embankment, it is necessary to deal with the bad foundation. In the same project, several different forms of foundation treatment are often used. Each treatment method has its own characteristics and optimal conditions. After the construction starts, with the construction of the trench to further reveal the site stratigraphy, designers often have to dynamically adjust the foundation treatment program according to the site conditions. Based on the analysis of the geological conditions of the construction site, this paper summarizes the control factors in the design, explains the design ideas and design points of the different ground treatment methods, and at the same time, And the late effect evaluation.