基于海岛软土地基的地基加固方案比选

COMPARISON AND SELECTION OF FOUNDATION REINFORCEMENT SCHEMES BASED ON IS LAND SOFT SOIL FOUNDATION

软土地基的处理一直是建设工程中的技术难题,基于工程所处岛内广泛沉积了以粉质粘土、淤泥质粉质粘土以及混砂石淤泥质粘土为代表的深厚软土地质,对比了水泥搅拌桩方案、真空预压方案及预填骨料后膨胀混凝土桩方案,并通过PLAXIS有限元数值计算平台,得到水泥搅拌桩加固方案下地基土的位移结果,为浙江省岱山县第一人民医院迁建项目的设计和施工提供指导。相关成果可供类似工程项目参考。

The treatment of soft soil foundation has always been a technical problem in construction projects. Based on the deep soft soil geology represented by silty clay, muddy silty clay and muddy clay mixed with sand and gravel in the island where the project is located, the cement mixing pile scheme, vacuum preloading scheme and expansive concrete pile scheme after pre filling aggregate are compared, and through the PLAXIS finite element numerical calculation platform, the displacement results of foundation soil under the cement mixing pile reinforcement scheme are obtained,which provides guidance for the design and construction of the relocation project of the first people’s Hospital in Daishan County, Zhejiang Province. The relevant results can be used as a reference for similar projects.