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黔桂线车河站的软土地基位于斜坡地带,粘土液化特征显著,且有块石阻碍,采用振冲碎石成桩失败。确定强夯碎石墩处理,采用梅花等边三角形布置,选用粒径5～400 mm级配碎石,墩直径1.5m,间距2.5m,设计夯击能量为3000 KN·m,复合地基承载力可达160～240 kPa。施工后,经检验地基承载力达到210 kPa,达到设计要求。
The soft soil foundation of Qiche River Station of Qian-gui Line is located in the slope zone. The liquefaction characteristics of clay are obvious, and there are blocks of stone impeding. Determine the processing of rammed gravel piers, the use of plum equilateral triangle layout, the selection of particle size 5 ~ 400 mm graded gravel, piers diameter 1.5m, spacing 2.5m, design ramming energy of 3000 KN · m, composite foundation bearing capacity Up to 160 ~ 240 kPa. After construction, the bearing capacity of foundations has reached 210 kPa, meeting the design requirements.