动态-渗流耦合加载下海堤周围海洋粘土的长期变形和破坏分析

IF 2 4区 工程技术 Q3 ENGINEERING, GEOLOGICAL
Huayang Lei, Ziyang Qi, Shuangxi Feng
{"title":"动态-渗流耦合加载下海堤周围海洋粘土的长期变形和破坏分析","authors":"Huayang Lei, Ziyang Qi, Shuangxi Feng","doi":"10.1080/1064119X.2022.2141161","DOIUrl":null,"url":null,"abstract":"Abstract The long-term deformation characteristics and damage degree of soft marine-deposited clay must be evaluated to safely design seawalls. According to abundant field evidence, soft marine-deposited clay tends to experience coupled dynamic loading and seepage loading. Determining the critical load and damage index for these complex loading conditions is imperative. With Tianjin marine-deposited clay as an example, we employed an improved cyclic triaxial instrument to analyse the cumulative plastic strain, water discharge and stress–strain relationship of the clay to understand its long-term deformation development. Based on shakedown theory, the critical cyclic stress ratio (CSR) was determined. A multi-factor damage variable method was proposed to evaluate the damage degree. Its comparison with a traditional mono-factor damage variable method illustrated that this method is effective for damage analyses of marine clay around seawalls under coupled dynamic-seepage loading.","PeriodicalId":18211,"journal":{"name":"Marine Georesources & Geotechnology","volume":" 56","pages":"1484 - 1495"},"PeriodicalIF":2.0000,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Long-term deformation and damage analysis of marine clay around seawalls under coupled dynamic-seepage loading\",\"authors\":\"Huayang Lei, Ziyang Qi, Shuangxi Feng\",\"doi\":\"10.1080/1064119X.2022.2141161\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract The long-term deformation characteristics and damage degree of soft marine-deposited clay must be evaluated to safely design seawalls. According to abundant field evidence, soft marine-deposited clay tends to experience coupled dynamic loading and seepage loading. Determining the critical load and damage index for these complex loading conditions is imperative. With Tianjin marine-deposited clay as an example, we employed an improved cyclic triaxial instrument to analyse the cumulative plastic strain, water discharge and stress–strain relationship of the clay to understand its long-term deformation development. Based on shakedown theory, the critical cyclic stress ratio (CSR) was determined. A multi-factor damage variable method was proposed to evaluate the damage degree. Its comparison with a traditional mono-factor damage variable method illustrated that this method is effective for damage analyses of marine clay around seawalls under coupled dynamic-seepage loading.\",\"PeriodicalId\":18211,\"journal\":{\"name\":\"Marine Georesources & Geotechnology\",\"volume\":\" 56\",\"pages\":\"1484 - 1495\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2023-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Marine Georesources & Geotechnology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1080/1064119X.2022.2141161\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Marine Georesources & Geotechnology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/1064119X.2022.2141161","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0

摘要

摘要海相软沉积粘土的长期变形特征和破坏程度是海堤安全设计的重要依据。大量的现场证据表明,海相沉积软黏土往往经历动力加载和渗流耦合加载。确定这些复杂载荷条件下的临界载荷和损伤指标是必要的。以天津海相沉积粘土为例,采用改进的循环三轴仪对其累积塑性应变、排水及应力-应变关系进行分析,了解其长期变形发展情况。基于安定理论,确定了临界循环应力比(CSR)。提出了一种多因素损伤变量法来评估损伤程度。与传统的单因素损伤变量法进行了比较,结果表明,该方法可以有效地分析海堤周围海相粘土在动力渗流耦合作用下的损伤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Long-term deformation and damage analysis of marine clay around seawalls under coupled dynamic-seepage loading
Abstract The long-term deformation characteristics and damage degree of soft marine-deposited clay must be evaluated to safely design seawalls. According to abundant field evidence, soft marine-deposited clay tends to experience coupled dynamic loading and seepage loading. Determining the critical load and damage index for these complex loading conditions is imperative. With Tianjin marine-deposited clay as an example, we employed an improved cyclic triaxial instrument to analyse the cumulative plastic strain, water discharge and stress–strain relationship of the clay to understand its long-term deformation development. Based on shakedown theory, the critical cyclic stress ratio (CSR) was determined. A multi-factor damage variable method was proposed to evaluate the damage degree. Its comparison with a traditional mono-factor damage variable method illustrated that this method is effective for damage analyses of marine clay around seawalls under coupled dynamic-seepage loading.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Marine Georesources & Geotechnology
Marine Georesources & Geotechnology 工程技术-工程:大洋
CiteScore
5.30
自引率
13.60%
发文量
89
审稿时长
>12 weeks
期刊介绍: Marine Georesources & Geotechnology publishes research applied to the scientific and engineering aspects, and the management and utilization, of seafloor sediments and rocks. The journal is intended for researchers and engineers, in both academia and industry, who seek solutions to problems in marine mineral resources and civil engineering. Areas covered range from marine minerals exploration and recovery to anchoring and mooring systems, bottom installations, and coastal engineering structures. The journal includes the study of acoustical, biological, chemical, mechanical, and physical properties affecting the geological system of the seafloor and response of this system to applied static and dynamic loads. Special emphasis is placed on the environmental aspects of seafloor exploration and development. The journal accepts contributions on topics such as shipboard mining systems, seafloor lodes, nodules, phosphates, crusts and placers, pipelines, platforms, and processing and transportation, as well as analytic techniques related to marine mining.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信