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软弱地基作为特殊路基广泛分布在中国的沿海区域,内陆平原和山区,为了满足公路建设,中国在各种软土处理技术上,积累了一些经验,但仍存在一些问题,特别是对深软土处理,由于其广泛的范围涉及到很多因素,成为软基处理的主要困难和影响工程质量的关键因素之一。四川省乐山至宜宾高速公路位于西南边缘,特殊路基的情况在四川很有代表性,本文通过大量的分析研究,提出了当地的软基路堤填土加固的方法,标准和建筑的设计和施工控制点,对其基础软弱问题,主要采用土工格栅和塑料排水板堆载预压的方法。塑料排水板方法对四川成渝高速公路软基处理效果显着,而且价格便宜,施工简单。
As a special subgrade, soft foundation is widely distributed in China’s coastal areas, inland plains and mountainous areas. In order to meet the needs of highway construction, China has accumulated some experience in various soft soil treatment technologies. However, some problems still exist, especially for deep soft Soil treatment, due to its wide range of involved many factors, has become one of the major difficulties in soft foundation treatment and one of the key factors affecting the quality of the project. The Leshan-Yibin Expressway in Sichuan Province is located on the southwestern margin. The situation of special subgrade is very representative in Sichuan Province. Based on a large amount of analysis and research, this paper presents the local methods, standards and design and construction control of embankment filling Point, its basic weakness, the main use of geogrids and plastic drain preloading method. Plastic drainage board method of Sichuan-Chongqing Expressway soft foundation treatment effect is remarkable, but the price is cheap, the construction is simple.