摘要
借助有限元等数值模拟手段,基于复杂地质条件特点和恶劣运行环境影响,分析堤防工程的工作性态,揭示其驱动机制,对及时发现堤防工程安全隐患、合理进行补强加固具有重要意义。以建于软土地基上的堤防工程为对象,开展考虑堤基堤身相互作用的堤防工作性态有限元数值仿真研究,探究适用于软土堤防工程堤基与堤身特性的本构模型和数值计算方法。结合实际工程案例,通过为不同土体选取合理本构模型,建立基于摩擦接触模型的堤防有限元模型,对该软土堤防工作性态进行分析计算,并与未考虑相互作用的有限元计算结果进行对比分析。结果表明:定义摩擦模型的相互作用会使堤防应力和水平位移计算结果有所减小,而竖直位移计算结果稍有增大,经过分析认为,考虑相互作用的计算更符合实际情况。
The embankment built on soft ground was studied systematically in this paper. Considering the interaction between the dike and its foundation,it carried out finite element numerical simulation study on the behavior of dike working and explored the suitable numerical method and the constitutive model for the characteristics of soft soil dike levee and its foundation. Combined with practical projects,by selecting reasonable constitutive model for different soil,the dike finite element model based on the frictional contact was established to analyze and calculate. The working behavior of soft soil embankment was analyzed and calculated,meanwhile,the results were analyzed comparing with the finite element model which had not considered the interaction.
出处
《人民黄河》
CAS
北大核心
2015年第3期44-48,共5页
Yellow River
基金
江苏省杰出青年基金资助项目(BK2012036)
高等学校博士学科点专项科研基金资助项目(20130094110010)
国家自然科学基金资助项目(51179066
51139001
41323001
51079086)
水利部公益性行业科研专项(201301061
201201038)
国家重点实验室专项经费资助项目(20145027612)
关键词
软土堤防
堤基堤身相互作用
工作性态分析
数值模拟
soft soil embankment
interaction between dike and its foundation
working behavior analysis
numerical simulation
