摘要
建立了强夯加固风成砂地基的分析模型,利用有限元分析软件ANSYS/LS-DYNA对强夯作用下的风成砂地基进行了模拟分析,对夯锤采用刚体模型,土体采用Drucker-Prager塑性模型进行模拟,考虑夯锤和土体接触面之间的接触。结合工程实例,分析了3000k N·m夯击能下风成砂地基的夯沉量随夯击次数的变化规律、夯后沉降量随深度的变化规律以及不同深度处土体塑性应变随夯击次数的变化规律等,所得结论可为强夯的设计施工提供参考依据。
The analysis model of the aeolian sand foundation treatment by dynamic consolidation method was conducted and the large software ANSYS / LS-DYNA was used to analyze the aeolian sand foundation by dynamic consolidation. The rigid body model and Drucker-Prager plastic model were adopted to simulate the rammer and the soil respectively considering the contact between the surface of the hammer and soil. With actual engineering experience,the variation characteristics of settlement with compacting number and depth on the 3000 k N·m tamping energy were obtained and analyzed. In addition,the change of plastic strain at different depth in soil was studied. The results could become a reference for engineering practice of compacted aeolian sand foundation.
出处
《北华航天工业学院学报》
CAS
2015年第5期1-3,11,共4页
Journal of North China Institute of Aerospace Engineering
基金
廊坊市科技计划项目(2014011050)
北华航天工业学院青年基金项目(KY-2014-14)
关键词
ANSYS
强夯法
风成砂地基
夯沉量
数值分析
ANSYS
dynamic compaction
aeolian sand foundation
settlement
numerical analysis
