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自上世纪八十年代中叶上海开始起步修建高等级公路以来,已相继建成了一批高速公路,为上海的经济建设,树立国际大都市的形象起到重要作用。由于高速公路建设周期长、投资大,在控制高速公路项目投资的各种措施中,软土地基处理乃是设计、建设及日后养护管理中需要重点考虑的问题。本文通过对同三高速公路上海段在软基处理中所采取的真空载联合预压等措施的方法、效果成本及问题的分析,提出适合本市高速公路软土地基处理的新途径。
Since the start of the construction of high-grade highways in Shanghai in the mid-1980s, a number of expressways have been built one after another, which plays an important role in Shanghai’s economic construction and building an international metropolis. Due to the long construction period of the expressway and the large investment, soft foundation treatment is the key consideration in the design, construction and future maintenance and management of various measures for controlling the investment in expressway projects. In this paper, through the analysis of the method, the effect cost and the problems of joint preloading of vacuum load in the treatment of soft ground in the Shanghai section of Tong-San expressway, the paper puts forward a new approach to deal with the soft ground of expressway in our city.