某粉喷桩复合地基有限元分析

Finite element analysis on a dry jet mixing pile composite foundation

某工点因设计需要,要在软土地基上修筑悬臂式挡土墙.经力学验算,地基强度不能满足要求,拟采用粉喷桩对地基进行加固.通过对粉喷桩加固方案进行有限元分析,探讨了粉喷桩复合地基的有限元分析方法及该复合地基变形和受力特点,得出了粉喷桩桩身应力分布和复合沉降变形,验证了该方案的可行性.

A cantilever retaining wall has to be built on soft soil foundation in order to meet the needs of design. The foundation bearing capability is too low according to a mechanic calculation. Therefore, dry jet mixing pile is applied to strengthen the bearing capability of foundation. Dry jet mixing pile is analyzed using finite element method. Finite element analys is method of dry jet mixing pile, the characteristics of stress and settlement deformation are mainly studied. The stress distribution and settlement deformation of the pile are obtained, which shows that the dry jet mixing pile is effective.