Abstract:The development of social economy relies on the construction of urban road networks, and the treatment of poor roadbeds is the key and difficult point of road construction. It is necessary to analyze and compare the types, physical parameters and burial depths of different soft foundations in detail from the feasibility, applicability, economy and other aspects to determine the most suitable treatment scheme. Taking the supporting infrastructure project (Phase Ⅵ) of Jiangdong New Area Park in Haikou City as an example, based on the current relevant design specifications and combined with the poor roadbed conditions at the project site, four schemes of shallow replacement and filling, preloading, high-pressure rotary jet grouting pile and cement mixing pile are compared. Finally, the treatment method of cement mixing pile is selected, and the bearing capacity and settlement of this treatment method are checked to ensure the rationality of the design scheme.
