Abstract

Offshore engineering is facing the challenges of modeling large deformation problems combined with the complexity of spatial variability of soils. This complex large deformation problem has not been extensively investigated, where one reason is believed due to limited practical approaches available. In this paper, the complex problem has been addressed through the in-house developed approach by implementing a remeshing-based large deformation method into finite element framework, where the spatial variability of the soil domain is realized by correlating the generated random field with the soil property distribution. By carrying large deformation analysis, the penetration of a T-bar penetrometer, the installation of a spudcan foundation and the sliding process of a slope are presented. This study provides an effective approach to investigate the large deformation problems by considering the effect of spatial variability, where the coupling between the complex soil properties and the excessive large displacement has not been intensively investigated.

摘要

海洋工程面临着模拟大变形问题以及土壤空间变异性的复杂性的挑战。这种复杂的大变形问题尚未得到广泛研究，其中一个原因被认为是由于可用的实际方法有限。在本文中，通过将基于重新网格划分的大变形方法实施到有限元框架中，通过内部开发的方法解决了复杂问题，其中通过将生成的随机场与土壤相关联来实现土壤域的空间可变性财产分配。通过大变形分析，介绍了T型杆贯入仪的贯入、桩桩基础的安装和边坡的滑动过程。