中文摘要：

根据现有垃圾土地基碎石桩处理的试验,发现其破坏形式为桩体的侧向鼓胀;假设桩周垃圾土因桩的侧向鼓胀达到朗肯被动破坏状态,且不计地基垃圾土和桩身自重,由桩、桩周垃圾土的极限平衡,可以得到桩的极限承载力理论计算公式;依据已经进行的相关试验和参考资料确定公式中的计算参数,计算出桩的极限承载力;同时进行了桩身重型动力触探试验,可以由贯入击数推求承载力的特征值;经过理论计算与原位试验结果对比分析,两者比较接近。

英文摘要：

Based on presented tests of improvement of solid waste ground by stone column,the failure mode of lateral expansion of column body can be found.It is assumed that solid waste surrounding column is in Rankin＇s positive limit situation caused by lateral expansion of column body,self weight solid waste and column is neglected,the calculation theory of limit bearing capacity of stone column can be extended on equilibrium of solid waste and column.The limit bear capacity of stone column can be calculated on parameters by complete tests and reference data.The heavy dynamic penetration tests were finished in stone column and the characteristic value of bearing capacity can be recommended on blow count.It is shown that bearing capacities of calculation and field test are close.