Results 21 to 30 of about 3,352 (227)

An Influence of Trench Formation on Steel Catenary Risers Based on a Hysteretic Nonlinear Seabed Model [PDF]

Iranian Journal of Oil & Gas Science and Technology, 2017
A steel catenary riser (SCR) attached to a floating platform at its upper end encounters fluctuations in and near its touchdown zone (TDZ), which causes the interaction with the seabed. Subsea surveys and the analysis of SCR’s indicated that the greatest
Reza Siahtiri, Abdolrahim Taheri
doaj   +1 more source

Numerical analysis of seabed dynamic response in vicinity of mono-pile under wave-current loading

Water Science and Engineering, 2020
Pile foundations have been widely used in offshore engineering. In this study, a three-dimensional numerical model was used to investigate the seabed response around a mono-pile under wave-current loading.
Jie Lin, Ji-sheng Zhang, Ke Sun, Xing-lin Wei, Ya-kun Guo   +4 more
doaj   +1 more source

Development and validation of a modified moving boundary model to simulate liquefaction-solidification behaviors of seabed under wave loading

Yantu gongcheng xuebao, 2022
An analysis method is proposed based on an existing moving boundary model to assess the response of seabed under wave loading, accounting for the effects of fluid viscosity and the boundary of the seabed.
SU Si-yang 1, 3, KONG De-qiong 1, 3, WU Lei-ye 2, 3, ZHU Bin 2, 3
doaj   +1 more source

Dynamic Response of Pile at Waterwave Load and Seismic Load

Shanghai Jiaotong Daxue xuebao, 2021
The pile foundation of offshore wind turbines is not only subjected to the cyclic action of wave load, but also the threat of seismic load. Therefore, the environment of pile in the ocean is complex.
LIU Chenchen, ZHANG Qi, LI Mingguang, ZHOU Xianglian, LI Weijie
doaj   +1 more source

Wave (Current)-Induced Pore Pressure in Offshore Deposits: A Coupled Finite Element Model

Journal of Marine Science and Engineering, 2018
The interaction between wave and offshore deposits is of great importance for the foundation design of marine installations. However, most previous investigations have been limited to connecting separated wave and seabed sub-models with an individual ...
Chencong Liao, Dongsheng Jeng, Zaibin Lin, Yakun Guo, Qi Zhang   +4 more
doaj   +1 more source

Two-dimensional nonlinear seismic response analysis for seabed site effect assessment in Jintang Strait

Yantu gongcheng xuebao, 2021
Ensuring the safety of coastal and offshore projects subjected to strong earthquakes is a major engineering challenge. A two-dimensional nonuniform gridding and fine finite element model for the seabed cross-section site in Jintang Strait is established ...
CHEN Guo-xing 1, 2, YUE Wen-ze 1, 2, RUAN Bin 3, WANG Yan-zhen 1, 2
doaj   +1 more source

Seabed Dynamic Responses Induced by Nonlinear Internal Waves: New Insights and Future Directions

Journal of Marine Science and Engineering, 2023
Strong nonlinear internal waves generate a significant pressure force on the seafloor and induce a pore-pressure response penetrated in the seabed and are thus an important driver of sediment resuspension and a potential trigger of seabed failure.
Tian Chen, Zhenghui Li, Hui Nai, Hanlu Liu, Hongxian Shan, Yonggang Jia   +5 more
doaj   +1 more source

Numerical Investigation of the Seabed Dynamic Response to a Perforated Semi-Circular Breakwater

Journal of Marine Science and Engineering
The semi-circular breakwater (SBW) has been implemented at numerous global locations due to its outstanding wave dissipation effectiveness and high structural performance. This study extends prior research by investigating the seabed dynamic response and
Yikang Gao, Guangsheng Wang, Tong Yu, Yanhao Yang, Titi Sui, Jingang Liu, Dawei Guan   +6 more
doaj   +1 more source

Technology Transfer to Underwater Archaeology: The LAHKE Project at the Submerged Neolithic Site of La Marmotta

Archaeological Prospection, EarlyView.
ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro, Cupertino Giacomo, Cipollini Angelo, Luciano Blasi, Quattrucci Luca   +4 more
wiley   +1 more source

Numerical Simulation of Seabed Response Around Monopile Under Wave–Vibration

Journal of Marine Science and Engineering
Monopile foundation is an important foundation form for offshore wind turbines, and the stability of the seabed around it is affected by the combined effects of wave and pile vibration.
Hongyi Du, Dunge Wang, Jiankang Hou, Ziqin Yu, Ze Liu, Yongzhou Cheng   +5 more
doaj   +1 more source