淤泥均匀性对砂-淤泥混合物抗液化性能的影响

IF 3.3 2区 工程技术 Q2 ENGINEERING, GEOLOGICAL
{"title":"淤泥均匀性对砂-淤泥混合物抗液化性能的影响","authors":"","doi":"10.1016/j.sandf.2024.101507","DOIUrl":null,"url":null,"abstract":"<div><p>Literature review revealed that effects of particle segregation and silt uniformity on the liquefaction resistance of sand–silt mixtures are not well understood. Therefore, cyclic direct simple shear tests were conducted to investigate effects of silt uniformity and stratified structures on the liquefaction resistance of sand–silt mixtures with 0%–40% fines content (<em>FC</em>). For all uniform sand–silt mixtures, as <em>FC</em> increased up to 20%, liquefaction resistance decreased, while it increased as <em>FC</em> increased from 20% to 40%. The liquefaction resistance of the samples with uniform silt only in the top and bottom layers was slightly higher than that of a uniform sample (<em>USM</em>), while the cyclic strength of the samples with silt concentrated in the middle layer was greater (up to 23%) than that of other nonuniform samples. <em>USM</em> exhibited the least liquefaction resistance. In addition, the number of silt layers (<em>NoSLs</em>) substantially affected the liquefaction resistance of stratified structures: as <em>NoSLs</em> increased from 1 to 3 layers, the cyclic resistance ratio was reduced by 20%, 10%, and 7% for <em>FC</em> values of 20%, 30%, and 40%, respectively. The liquefaction resistance of the stratified samples was greater than that of <em>USM</em>. To quantify the effect of silt uniformity and <em>NoSLs</em>, the nonuniformity index (<em>NUI</em>) was introduced herein; the calculated <em>NUI</em> values showed that the increase in liquefaction resistance was well correlated with the increase in the <em>NUI</em>.</p></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0038080624000854/pdfft?md5=7a612a407650476e3e677a2129ea3ebe&pid=1-s2.0-S0038080624000854-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Effect of silt uniformity on the liquefaction resistance of sand–silt mixtures\",\"authors\":\"\",\"doi\":\"10.1016/j.sandf.2024.101507\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Literature review revealed that effects of particle segregation and silt uniformity on the liquefaction resistance of sand–silt mixtures are not well understood. Therefore, cyclic direct simple shear tests were conducted to investigate effects of silt uniformity and stratified structures on the liquefaction resistance of sand–silt mixtures with 0%–40% fines content (<em>FC</em>). For all uniform sand–silt mixtures, as <em>FC</em> increased up to 20%, liquefaction resistance decreased, while it increased as <em>FC</em> increased from 20% to 40%. The liquefaction resistance of the samples with uniform silt only in the top and bottom layers was slightly higher than that of a uniform sample (<em>USM</em>), while the cyclic strength of the samples with silt concentrated in the middle layer was greater (up to 23%) than that of other nonuniform samples. <em>USM</em> exhibited the least liquefaction resistance. In addition, the number of silt layers (<em>NoSLs</em>) substantially affected the liquefaction resistance of stratified structures: as <em>NoSLs</em> increased from 1 to 3 layers, the cyclic resistance ratio was reduced by 20%, 10%, and 7% for <em>FC</em> values of 20%, 30%, and 40%, respectively. The liquefaction resistance of the stratified samples was greater than that of <em>USM</em>. To quantify the effect of silt uniformity and <em>NoSLs</em>, the nonuniformity index (<em>NUI</em>) was introduced herein; the calculated <em>NUI</em> values showed that the increase in liquefaction resistance was well correlated with the increase in the <em>NUI</em>.</p></div>\",\"PeriodicalId\":21857,\"journal\":{\"name\":\"Soils and Foundations\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0038080624000854/pdfft?md5=7a612a407650476e3e677a2129ea3ebe&pid=1-s2.0-S0038080624000854-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Soils and Foundations\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0038080624000854\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soils and Foundations","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038080624000854","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0

摘要

文献综述显示,颗粒离析和粉土均匀性对砂-粉土混合物抗液化性能的影响还不十分清楚。因此,我们进行了循环直接简单剪切试验,以研究粉土均匀性和分层结构对细粒含量(FC)为 0%-40% 的砂淤土混合物抗液化性能的影响。对于所有均匀的砂淤土混合物,当细粒含量增加到 20% 时,抗液化性降低,而当细粒含量从 20% 增加到 40% 时,抗液化性增加。仅在顶层和底层有均匀淤泥的样本的抗液化性略高于均匀样本(USM),而淤泥集中在中层的样本的循环强度(最高达 23%)高于其他非均匀样本。USM 的抗液化能力最小。此外,淤泥层数(NoSLs)对分层结构的抗液化能力也有很大影响:当 NoSLs 从 1 层增加到 3 层时,FC 值为 20%、30% 和 40% 时,抗循环比分别降低了 20%、10% 和 7%。分层样本的抗液化能力大于 USM。为量化淤泥均匀性和 NoSL 的影响,本文引入了非均匀性指数(NUI);计算的非均匀性指数值表明,液化阻力的增加与非均匀性指数的增加密切相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of silt uniformity on the liquefaction resistance of sand–silt mixtures

Literature review revealed that effects of particle segregation and silt uniformity on the liquefaction resistance of sand–silt mixtures are not well understood. Therefore, cyclic direct simple shear tests were conducted to investigate effects of silt uniformity and stratified structures on the liquefaction resistance of sand–silt mixtures with 0%–40% fines content (FC). For all uniform sand–silt mixtures, as FC increased up to 20%, liquefaction resistance decreased, while it increased as FC increased from 20% to 40%. The liquefaction resistance of the samples with uniform silt only in the top and bottom layers was slightly higher than that of a uniform sample (USM), while the cyclic strength of the samples with silt concentrated in the middle layer was greater (up to 23%) than that of other nonuniform samples. USM exhibited the least liquefaction resistance. In addition, the number of silt layers (NoSLs) substantially affected the liquefaction resistance of stratified structures: as NoSLs increased from 1 to 3 layers, the cyclic resistance ratio was reduced by 20%, 10%, and 7% for FC values of 20%, 30%, and 40%, respectively. The liquefaction resistance of the stratified samples was greater than that of USM. To quantify the effect of silt uniformity and NoSLs, the nonuniformity index (NUI) was introduced herein; the calculated NUI values showed that the increase in liquefaction resistance was well correlated with the increase in the NUI.

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
Soils and Foundations
Soils and Foundations 工程技术-地球科学综合
CiteScore
6.40
自引率
8.10%
发文量
99
审稿时长
5 months
期刊介绍: Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.
×
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