인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Subsea pipelines are vulnerable to anchor-induced structural damage during ship mooring operations, particularly from raising and dragging interactions. This study quantified the effects of the pipeline burial depth on the structural damage response under these two loading scenarios in a soft clay seabed. Three-dimensional finite element analyses were conducted using Abaqus/Explicit with the Coupled Eulerian-Lagrangian method, simulating a 6-ton stockless anchor on a soft clay seabed modeled using the Mohr–Coulomb constitutive model. Half-buried (1/2D, Case 1) and unburied (Case 2) conditions were compared using the equivalent plastic strain (PEEQ), von Mises stress, contact characteristics, and energy dissipation as primary damage indicators. In the raising scenario, both pipelines remained within the elastic regime (PEEQ = 0), but the unburied pipeline showed 44% higher von Mises stress, 58.7% greater lateral displacement, and 32% larger resulting displacement compared to the half-buried case. For the dragging scenario, the unburied pipeline showed 4.9 and 2.97 times higher PEEQ and peak contact pressure, respectively, while the half-buried pipeline exhibited 6.7 times more contact nodes and 61% higher plastic dissipation energy. These findings show that pipeline burial provides consistent protection under anchor dragging and raising conditions, underscoring the need for scenario-specific burial design standards.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.