摘要
强夯法加固地基的机理非常复杂,影响因素众多,且涉及到多重耦合现象。笔者综合考虑地基士的流、固、动力耦合和地基与夯锤接触表面的动力耦合情况,给出了基于三维有限单元法的计算方法和迭代格式,并对一具体算例进行了耦合数值分析,总结了地基位移、应力及接触反力等在强夯作用时间内的变化规律和在空间上的分布特征。经与实际工程资料对比,结果令人满意。说明所建立的耦合方法可用于强夯加固法求解,并提出了适宜动力分析的有效方法,可应用于其它同类问题的分析计算中。
The multi-coupling in the dynamic consolidation method(DCM) for reinforcing foundations is analyzed. Integrated considering factors of liquid, solid, dynamic resulting from rammer bump into ground, the solution method and iterative format are given based on three-dimensional finite element method. Though coupling analysis of an actual project, the variational rule and distributing character on displacement, stress, and contact stress are obtained. The results have shown good agreement with those data of the actual project. The coupling method proposed is applicable to dynamic consolidation method and the similar dynamic questions.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2003年第3期471-474,共4页
Rock and Soil Mechanics
关键词
强夯法
有限单元法
耦合分析
dynamic consolidation method
finite element method
coupling analysis
