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通过温福高速铁路软土路堤试验段工程,对“桩(预应力管桩、CFG桩)-桩帽-土工网垫”复合结构形式加固软土地基进行分析,采用测斜仪对桩体及地基土的深层侧向变形进行现场实测,对桩及地基土的位移实际情况做出评判,了解路堤荷载下整个路堤“桩-网复合结构”位移变形场的分布,评价不同连接形式条件下桩及地基土的深层变形特点,进而评价路堤的稳定状态。
Through the soft soil embankment test section of Wen-Fu high-speed railway project, the pile foundation (prestressed pipe pile, CFG pile), pile cap, geotextile mat and composite structure reinforced soft soil foundation are analyzed. Body and subsoil in deep lateral deformation of the embankment on the spot to judge the actual displacement of pile and foundation soil to understand the distribution of the entire embankment “pile-net composite structure ” displacement deformation field under embankment load and evaluate the different connections Under the condition of deep pile and foundation soil deformation characteristics, and then evaluate the stability of the embankment.