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在全面考虑干振碎石桩挤密、减震、排水 3种作用的基础上 ,分析了干振碎石桩对高速公路液化地基处理后 ,复合地基中的孔隙水压力分布情况。分析表明 ,考虑 3种作用后 ,处理后的高速公路液化地基在地震作用下液化的可能性大大降低。
The distribution of pore water pressure in composite foundation after the treatment of dry-vibrated gravel piles on liquefied ground of expressway was analyzed based on the comprehensive consideration of the three functions of dry-vibration gravel pile compaction, shock absorption and drainage. The analysis shows that the liquefaction of treated liquefied ground under seismic action is greatly reduced after considering the three effects.