摘要
在路面结构分析和设计中,非线性材料层通常采用定值回弹模量,采用这一方法计算出的理论值与实测值之间存在较大差异。基于弹性层状体系理论和路面非线性材料本构模型关系,提出了一种计算路面非线性材料层弹性模量的新方法,结合计算实例,编制了非线性材料层弹性模量计算程序,并对弹性模量变化规律进行了探讨,绘制了弹性模量等值线图,从而验证了计算方法的可行性。采用有限元法对非线性材料层进行了线弹性和非线性弹性对比分析。
In the design of pavement structure, moduli of nonlinear materials have some differences between constant values computed by multi-layer elastic system theory and practical surveying values. Based on the multi-layer elastic system theory and constitutive models of nonlinear materials, a new algorithm was provided to solve resilient moduli of nonlinear material layers. Furthermore, a program was designed and programmed to compute resilient moduli of nonlinear material layers. In addition, an example was illustrated to show the feasibility of the algorithm, and contours of resilient moduli were drawn. At last, a finite element program was employed to carry out linear analysis and nonlinear analysis in nonlinear material layers.
出处
《交通与计算机》
2007年第1期96-99,共4页
Computer and Communications
关键词
弹性模量
非线性
弹性层状体系
本构模型
有限元
resilient modulus
nonlinear property
multilayer elastic system
constitutive model
FEM
