防波堤抛石挤淤沉降数值计算方法研究

引用非定常西原黏弹塑性流变模型表达淤泥质软黏土的本构关系;结合模拟退火全局优化算法理念,基于MATLAB和ABAQUS交互软件平台,开发模拟退火法与有限元耦合反演程序,以获得模型计算参数;最后进行抛石挤淤后防波堤基础下卧淤泥质软黏土的变形数值计算分析。结果表明,非定常西原黏弹塑性流变模型适宜于表达淤泥质软黏土的本构关系;模拟退火全局优化算法与有限元耦合反演模型计算参数的效果好,适用于沉降数值计算分析。本文为抛石挤淤后防波堤基础沉降预测和控制提供了数值计算方法参考。

Study on the Numerical Method of Settlement Calculation of the Foundation of Breakwater by Riprapping

This paper introduces the nonstationary nishihara visco-elastoplastic rheological model to be made the constitutive equation of silt clay. Also, there is a method of obtaining parameters of the model, which couples SAA with the finite element analysis by software of ABAQUS and MATLAB. Then, the numerical analysis of settlement is done by the positive direction, that is for the foundation of breakwater after the riprapping. Studies have shown that the numerical method is good to calculate the settlement of silt clay layer in this paper. Finally, the research resuhs can provide a numerical reference for the prediction and control of the settlement of foundation of breakwater.