土石材料振动压实模型综述

Review of Vibration Compaction Model of Soil and Rock Materials

振动压实模型可用于分析振动碾压机与土体相互作用,理解振动压实机理。介绍了振动压实模型发展现状,根据模型特点进行分类并选取一些代表性的模型进行介绍。振动压实模型包括黏弹性模型与黏弹塑性模型,其中黏弹性模型包括线弹性模型和非线性弹性模型,黏弹塑性模型包括不对称滞回模型和包含塑性原件的黏弹塑性模型。通过对模型特点的介绍,指出了现有模型的优点和存在的不足,并提出振动压实模型应当合理考虑土体变形的黏弹塑性性质和碾压机行走的影响,为压实质量连续监测和压实过程优化提供理论基础。

The vibration compaction model can be used to analyze the interaction between vibratory roller and soil and to understand the mech⁃anism of vibration compaction.This paper introduced the development of vibration compaction model.The models were classified according to the characteristics and some representative models were selected to be introduced.Vibration compaction model included viscoelastic model and viscoelastic⁃plastic model.The viscoelastic model included linear elastic model and nonlinear elastic model.The viscoelastic⁃plastic model included asymmetric hysteretic model and the models containing viscoelastic⁃plastic elements.Through the introduction of the charac⁃teristics of the model,the advantages and disadvantages of the existing models were pointed out.The vibration compaction model should rea⁃sonably consider the viscoelastic⁃plastic properties of soil deformation and the influence of roller driving,so as to provide theoretical basis for the continuous monitoring of compaction quality and the optimization of compaction process.