Mingke Lin , Changbing Qin , Siyu Li , Jiangtao Yi
{"title":"Ultimate lateral bearing capacity of rigid pile in clay considering soil stress history and scour-hole dimension","authors":"Mingke Lin , Changbing Qin , Siyu Li , Jiangtao Yi","doi":"10.1016/j.compgeo.2024.106848","DOIUrl":null,"url":null,"abstract":"<div><div>Rigid monopiles in a marine environment are frequently subjected to severe lateral loads and scour effects, which complicates the stability assessment of monopiles. This paper proposes a ‘double failure mechanism’ that integrates the meniscus-conical failure wedge and rotational failure model to evaluate the ultimate lateral bearing capacity of a rigid pile in clay under scour conditions. Considering the influence of scour-hole, three distinct failure modes are introduced based on the possible ranges of failure. The critical ‘double failure mechanism’ can satisfy both the force balance and the moment balance of the pile-soil system. Based on this framework, an analytical solution for the ultimate lateral bearing capacity of a rigid monopile with considerations of these three failure modes is derived using the limit equilibrium method. Additionally, the combined effects of additional stress and stress history on soil properties are accurately analyzed. The FEM results and existing theoretical solutions are employed to validate the derived limit equilibrium solution. Finally, the effects of scour-hole dimensions and load eccentricity on the ultimate lateral bearing capacity of a rigid monopile, wedge failure and rotational failure are investigated.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"177 ","pages":"Article 106848"},"PeriodicalIF":5.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Computers and Geotechnics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0266352X24007870","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
Rigid monopiles in a marine environment are frequently subjected to severe lateral loads and scour effects, which complicates the stability assessment of monopiles. This paper proposes a ‘double failure mechanism’ that integrates the meniscus-conical failure wedge and rotational failure model to evaluate the ultimate lateral bearing capacity of a rigid pile in clay under scour conditions. Considering the influence of scour-hole, three distinct failure modes are introduced based on the possible ranges of failure. The critical ‘double failure mechanism’ can satisfy both the force balance and the moment balance of the pile-soil system. Based on this framework, an analytical solution for the ultimate lateral bearing capacity of a rigid monopile with considerations of these three failure modes is derived using the limit equilibrium method. Additionally, the combined effects of additional stress and stress history on soil properties are accurately analyzed. The FEM results and existing theoretical solutions are employed to validate the derived limit equilibrium solution. Finally, the effects of scour-hole dimensions and load eccentricity on the ultimate lateral bearing capacity of a rigid monopile, wedge failure and rotational failure are investigated.
期刊介绍:
The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.