Elastic-viscoplastic behaviors of polymer-blend geocell sheets:Numerical and experimental investigations

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外文摘要：Polymer-blend geocell sheets(PBGS)have been developed as substitute materials for manufacturing geocells.Various attempts have been made to test and predict the behaviors of commonly used geogrids,geotextiles,geomembranes,and geocells.However,the elastic-viscoplastic behaviors of novel-developed geocell sheets are still poorly understood.Therefore,this paper investigates the elastic-viscoplastic be-haviors of PBGS to gain a comprehensive understanding of their mechanical properties.Furthermore,the tensile load-strain history under various loading conditions is simulated by numerical calculation for widespread utilization.To achieve this goal,monotonic loading tests,short-term creep and stress relaxation tests,and multi-load-path tests(also known as arbitrary loading history tests)are performed using a universal testing machine.The results are simulated using the nonlinear three-component(NLTC)model,which consists of three nonlinear components,i.e.a hypo-elastic component,a nonlinear inviscid component,and a nonlinear viscid component.The experimental and numerical results demonstrate that PBGS exhibit significant elastic-viscoplastic behavior that can be accurately predicted by the NLTC model.Moreover,the tensile strain rates significantly influence the tensile load,with higher strain rates resulting in increased tensile loads and more linear load-strain curves.Also,parametric analysis of the rheological characteristics reveals that the initial tensile strain rates have negligible impact on the results.The rate-sensitivity coefficient of PBGS is approximately 0.163,which falls within the typical range observed in most geosynthetics.

外文关键词：

Polymer-blend geocell sheetsGeosyntheticsElastic-viscoplastic behaviorNumerical simulationsTensile load-strain response

作者：

Yang Zhao、Jianbin Chen、Zheng Lu、Jie Liu、Abdollah Tabaroei、Chuxuan Tang、Yong Wang、Lipeng Wu、Bo Wang、Hailin Yao

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作者单位：

State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,430071,China

Wuhan Municipal Engineering Design & Research Institute Co.,Ltd.,Wuhan,430023,China

Hubei Key Laboratory of Geo-Environmental Engineering,Wuhan,430071,China

Xinjiang Transportation Planning Survey and Design Institute Co.,Ltd.,Urumqi,830006,China

Department of Civil Engineering,Eshragh Institute of Higher Education,Bojnourd,9415615473,Iran

University of Chinese Academy of Sciences,Beijing,100049,China

China Energy Engineering Gezhouba Rail Transit Construction Co.,Ltd.,Shenzhen,518116,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaResearch Fund Project of Xinjiang Transportation Planning Survey and Design Institute Co.,Ltd

项目编号：

4207726242077261KY2022042504

出版年：

2024

DOI：

10.1016/j.jrmge.2024.01.002

岩石力学与岩土工程学报(英文版)

中国科学院武汉岩土力学所中国岩石力学与工程学会武汉大学

岩石力学与岩土工程学报(英文版)

CSTPCD

影响因子：0.404

ISSN：1674-7755

年,卷(期)：2024.16(10)