强夯碎石墩加固软基路堤的稳定性有限元分析

强夯碎石墩复合地基已经在工程中得到应用,但理论研究远远落后于工程实践。采用有限元数值分析方法,就碎石墩墩形、过渡区厚度、置换率、墩体长度等因素对复合地基上路堤稳定性的影响进行了定量分析。分析结果表明,强夯碎石墩的加固作用明显,在相同的置换率下采用少墩粗径可以获得更好的加固效果。

Analysis of Limited Element for Soft Embankment Stability Reinforced by Forced Tamped Debris Piers

Forced tamping debris pier complex foundation has been applying in projects,but the theoretical research is far below the engineering practice.With limited element number analysis method,we are able to conduct quantitative analysis to debris pier shape,thickness in transition zone,replacement rate,pier length,etc.that influences the stability of embankment on foundation.The result of analysis shows the force tamping debris pier has an obvious reinforcement function,better reinforcement may be achieved by less pier and bigger diameter piers at same replacement rate.