基于FLAC^(3D)含SMP强度准则黏弹塑性模型的二次开发

Secondary development of viscoelasto-plastic model with SMP strength criterion in FLAC^(3D)

在分析岩土工程时通常会用到强度准则,在众多强度准则中,SMP准则的物理意义最为明确,其屈服函数表达式是非线性形式,对其进行二次开发研究具有较为重要的意义。利用FLAC3D的二次开发平台,使用VC++环境在FLAC3D软件中实现了含SMP强度准则的黏弹塑性模型的开发,其中的SMP强度准则推广到了黏性土,通过一个简单的算例验证了程序编制的正确性和可靠性,所采用的相关二次开发的思路可以为其他强度准则及流变本构模型的二次开发提供参考。

The strength criterion is used to analyse geotechnical engineering.The physical significance of SMP criterion is most explicit than other strength criteria,its expression is nonlinear,and its Secondary development has important meaning.The viscoelasto-plastic rheological constitutive model with SMP strength criterion is developed according to the further developing platform in FLAC3D with VC＋＋;and the SMP criterion is deduced to adapt to cohesive soil.At last,its accuracy and reliability are confirmed by a simple engineering calculation.The proposed mode can bring forward references for the secondary development of other rheological models and strength criteria.