Influence of groundwater level changes on the seismic response of geosynthetic-reinforced soil retaining walls

IF 3.3 3区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Journal of Zhejiang University-SCIENCE A Pub Date : 2022-11-01 DOI:10.1631/jzus.A2200188
Fei-fan Ren, Qian Huang, Xueyong Geng, Guan Wang
{"title":"Influence of groundwater level changes on the seismic response of geosynthetic-reinforced soil retaining walls","authors":"Fei-fan Ren, Qian Huang, Xueyong Geng, Guan Wang","doi":"10.1631/jzus.A2200188","DOIUrl":null,"url":null,"abstract":"Geosynthetic-reinforced soil retaining walls (GSRWs) have been widely used in civil engineering projects. However, as the climate changes, extreme weather conditions and natural hazards are likely to become more frequent or intense, posing a huge threat to the stability of GSRWs. In this paper, the effect of groundwater level fluctuations on the seismic response of GSRWs is investigated. First, a dynamic numerical model was established and validated through centrifugal shaking-table test results. Using the established numerical model, the seismic response of GSRWs under four different groundwater level conditions was then investigated, i.e., an earthquake occurring at a low groundwater level (Case LW), an earthquake occurring when the groundwater level rises (Case RW), an earthquake occurring at a high groundwater level (Case HW), and an earthquake occurring when the groundwater level drops (Case DW). The results show that the GSRW in Case DW has the worst seismic stability because of the drag forces generated by the water flowing to the outside of the GSRW. For Case RW, deformation of the GSRW under earthquake forces was prevented by the drag forces generated by the water flowing to the inside of the GSRW and the water pressure acting on the outside of the facing, giving the GSRW the best seismic stability in this case. Compared with Case LW, the seismic stability of a GSRW in Case HW is worse, because the high groundwater level will generate excess pore-water pressure during an earthquake. On this basis, we provide engineering design suggestions to be considered by practitioners.","PeriodicalId":17508,"journal":{"name":"Journal of Zhejiang University-SCIENCE A","volume":"85 1","pages":"850 - 862"},"PeriodicalIF":3.3000,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Zhejiang University-SCIENCE A","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1631/jzus.A2200188","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1

Abstract

Geosynthetic-reinforced soil retaining walls (GSRWs) have been widely used in civil engineering projects. However, as the climate changes, extreme weather conditions and natural hazards are likely to become more frequent or intense, posing a huge threat to the stability of GSRWs. In this paper, the effect of groundwater level fluctuations on the seismic response of GSRWs is investigated. First, a dynamic numerical model was established and validated through centrifugal shaking-table test results. Using the established numerical model, the seismic response of GSRWs under four different groundwater level conditions was then investigated, i.e., an earthquake occurring at a low groundwater level (Case LW), an earthquake occurring when the groundwater level rises (Case RW), an earthquake occurring at a high groundwater level (Case HW), and an earthquake occurring when the groundwater level drops (Case DW). The results show that the GSRW in Case DW has the worst seismic stability because of the drag forces generated by the water flowing to the outside of the GSRW. For Case RW, deformation of the GSRW under earthquake forces was prevented by the drag forces generated by the water flowing to the inside of the GSRW and the water pressure acting on the outside of the facing, giving the GSRW the best seismic stability in this case. Compared with Case LW, the seismic stability of a GSRW in Case HW is worse, because the high groundwater level will generate excess pore-water pressure during an earthquake. On this basis, we provide engineering design suggestions to be considered by practitioners.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
地下水位变化对土工加筋土挡土墙地震响应的影响
土工合成加筋土挡土墙在土木工程中得到了广泛的应用。然而,随着气候的变化,极端天气条件和自然灾害可能变得更加频繁或强烈,对地源性轻轨的稳定性构成巨大威胁。本文研究了地下水位波动对地震动墙地震响应的影响。首先,建立了动态数值模型,并通过离心振动台试验结果进行了验证。利用所建立的数值模型,研究了地下水位低时地震(Case LW)、地下水位上升时地震(Case RW)、地下水位高时地震(Case HW)和地下水位下降时地震(Case DW) 4种不同地下水位条件下的地震响应。结果表明,在DW情况下,由于水流向GSRW外部产生的阻力,GSRW的地震稳定性最差。对于Case RW, GSRW在地震力作用下的变形被流入GSRW内部的水和作用在面板外部的水压所产生的阻力所阻止,使得GSRW在这种情况下具有最佳的地震稳定性。与Case LW相比,Case HW的GSRW的地震稳定性更差,因为在地震过程中较高的地下水位会产生超孔隙水压力。在此基础上,提出工程设计建议,供从业人员参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of Zhejiang University-SCIENCE A
Journal of Zhejiang University-SCIENCE A 工程技术-工程:综合
CiteScore
5.60
自引率
12.50%
发文量
2964
审稿时长
2.9 months
期刊介绍: Journal of Zhejiang University SCIENCE A covers research in Applied Physics, Mechanical and Civil Engineering, Environmental Science and Energy, Materials Science and Chemical Engineering, etc.
期刊最新文献
A novel approach for the optimal arrangement of tube bundles in a 1000-MW condenser Influence of overhanging tool length and vibrator material on electromechanical impedance and amplitude prediction in ultrasonic spindle vibrator Dynamics of buoyancy-driven microflow in a narrow annular space Key technologies and development trends of the soft abrasive flow finishing method Solid-liquid flow characteristics and sticking-force analysis of valve-core fitting clearance
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1