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首页> 外文期刊>Ocean Engineering >Three-dimensional consolidation of a porous unsaturated seabed under rubble mound breakwater
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Three-dimensional consolidation of a porous unsaturated seabed under rubble mound breakwater

机译：砾石防波堤下多孔非饱和海床的三维固结

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The consolidation status of a seabed under marine structures and hydrostatic pressure is the basis for the evaluation of the liquefaction and dynamic shear failure of seabed foundation under ocean wave loading. However, only a few investigations have been conducted for the seabed consolidation under hydrostatic pressure and marine structures. Furthermore, most previous numerical models for the Biot's consolidation theory are limited to two-dimensional cases. In this study, based on Biot's dynamic poro-elastic theory {"u-p" approximation), a three-dimensional FEM seabed model is adopted to investigate the consolidation of seabed under a rubble mound breakwater and hydrostatic pressure. Numerical results show that the rubble mound breakwater significantly affect the stress/displacement fields in the seabed foundation. Based on the parametric study, it can be concluded: (1) Young's modulus of a seabed significantly affects the settlement of breakwater; and (2) the magnitude of the shear stress concentrates in the zones beneath the toes of breakwater.
机译：海洋结构和静水压力作用下海床的固结状态是评估海浪荷载作用下海床基础液化和动力剪切破坏的基础。但是，对于静水压力和海洋结构下的海床固结只进行了很少的研究。此外，大多数以前的Biot固结理论数值模型都限于二维情况。在这项研究中，基于Biot的动态孔隙弹性理论（“ u-p”逼近），采用三维有限元海床模型来研究碎石墩防波堤和静水压力下的海床固结。数值结果表明，瓦砾堆防波堤对海床基础中的应力/位移场有显着影响。根据参数研究，可以得出以下结论：（1）海床的杨氏模量显着影响防波堤的沉降； （2）剪应力的大小集中在防波堤脚趾下方的区域。

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