张其一, 曲程, xxxx. 考虑应力罗德角的修正剑桥模型在ABAQUS中的数值实现及其在海堤工程中的应用[J]. 海岸工程, x(x): xx-xx. doi: 10.12362/j.issn.1002-3682.20231207001.
    引用本文: 张其一, 曲程, xxxx. 考虑应力罗德角的修正剑桥模型在ABAQUS中的数值实现及其在海堤工程中的应用[J]. 海岸工程, x(x): xx-xx. doi: 10.12362/j.issn.1002-3682.20231207001.
    ZHANG Q Y, Qu C, xxxx. Numerical implementation of the modified cam-clay model considering the stress rhodes angle in ABAQUS and its application to seawall engineering[J]. Coastal Engineering, x(x): xx-xx. DOI: 10.12362/j.issn.1002-3682.20231207001
    Citation: ZHANG Q Y, Qu C, xxxx. Numerical implementation of the modified cam-clay model considering the stress rhodes angle in ABAQUS and its application to seawall engineering[J]. Coastal Engineering, x(x): xx-xx. DOI: 10.12362/j.issn.1002-3682.20231207001

    考虑应力罗德角的修正剑桥模型在ABAQUS中的数值实现及其在海堤工程中的应用

    Numerical Implementation of the Modified Cam-clay Model Considering the Stress Rhodes Angle in ABAQUS and Its Application to Seawall Engineering

    • 摘要: 基于有限元软件ABAUQS提供的UMAT用户材料子程序接口,考虑应力罗德角对黏土力学特性的影响,改进了修正剑桥模型中的临界状态线。采用相关联流动法则,通过引入剪胀比推导了弹塑性矩阵,从而开发了考虑应力罗德角影响的修正剑桥模型UMAT子程序。运用该子程序模拟了正常固结土的静三轴和真三轴试验,并分析了应力罗德角改变引起的海堤最终沉降量的变化。模拟结果表明,考虑应力罗德角的修正剑桥模型能够较好模拟土体的应力-应变特性;应力罗德角变化对海堤最终沉降量的影响随地基深度增加而降低,对海堤-地基交界处的最终沉降量影响最为显著。

       

      Abstract: Based on the UMAT user material subroutine interface provided by the finite element software ABAQUS, By considering the impact of the stress Lode’s Angle on the mechanical properties of clay, the critical state line in the modified Cam-clay model has been enhanced. The elastic-plastic matrix is derived by introducing the shear expansion ratio using the correlated flow rule, thus the UMAT subroutine of the Cam-clay model considering the influence of the Stress Lode’s Angle is developed. This subroutine is used to simulate the static triaxial and true triaxial tests of normal consolidated soil and analyze the change of the final settlement of the seawall caused by the change of the Stress Lode’s Angle. The simulation results show that the Cam-clay model considering the stress Lode’s Angle can simulate the stress-strain characteristics of soil well. The influence of the change of the Stress Lode’s Angle on the final settlement of the seawall decreases with the increase of the foundation depth, and the influence on the final settlement of the seawall-foundation junction is the most significant.

       

    /

    返回文章
    返回