The load bearing behavior of single bored piles grouted at the bottom of pile with sand and stone layers is researched.The characteristics of tip resistance and side friction of pile are analyzed.

• 研究了持力层为砂卵石层单钻孔灌注桩桩底注浆承载性状，并且综合对比分析了桩端阻力和桩侧阻力的特性。