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杭州绕城高速公路南线工程位于平原水网地区,沿线水系发达,河网密布,地下水位高,淤泥层深厚,含水量高,压缩性大,承载力低。在这样的地段修建高速公路需要对软土地基进行加固处理,才能满足规范规定的工后沉降要求。经过对目前常用的公路工程软土地基处理方法的初步技术、经济比较后,我们选择了28个桥头路段应用现浇混凝土薄壁筒桩技术加固桥头软土地基,以克服“桥头跳车”的质量通病。
Hangzhou Ring Expressway south line project is located in the plain water network area, along the developed river system, river network, groundwater level is high, silt deep, high water content, compressibility, bearing capacity is low. The construction of expressways in such areas requires the reinforcement of soft soil foundations in order to meet the post-construction settlement requirements stipulated in the code. After the initial common technology of highway soft soil foundation treatment methods, after economic comparison, we chose 28 bridge sections of the application of cast-in-situ concrete thin-walled pile technology to strengthen the bridgehead soft soil foundation in order to overcome the "The quality of common problems.