基于拉拔试验的加筋土界面摩擦特性
TU411; 加筋土具有良好的工程性能,被广泛应用于加固路基和边坡支挡等领域,筋土界面摩擦强度对支挡结构的整体性和稳定性具有重要影响.为研究不同加筋土的界面摩擦特性,自制拉拔装置,对黏土-土工格栅、黏土-碳纤维布、黏土-土工格室和碎石土-土工格室等4种加筋土进行拉拔试验.研究结果表明,4种加筋土中,土工格室与碎石土的界面摩擦强度最高,构成的加筋体承受变形的能力最强;黏土-碳纤维布构成的加筋体界面摩擦强度最低,但具有筋土间相互作用发挥较快、允许变形小的特点;不同加筋体的允许变形差别较大,在实际工程中应充分考虑.提出了一种考虑土工格室加强区的无黏性土-土工格室界面最大摩阻力计算理论模型,研究结果可...
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| Published in | 深圳大学学报（理工版） Vol. 41; no. 4; pp. 499 - 508 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
湘潭大学土木工程学院,湖南湘潭 411105%湖南科技大学土木工程学院,湖南湘潭 411201
01.07.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-2618 |
| DOI | 10.3724/SP.J.1249.2024.04499 |
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| Abstract | TU411; 加筋土具有良好的工程性能,被广泛应用于加固路基和边坡支挡等领域,筋土界面摩擦强度对支挡结构的整体性和稳定性具有重要影响.为研究不同加筋土的界面摩擦特性,自制拉拔装置,对黏土-土工格栅、黏土-碳纤维布、黏土-土工格室和碎石土-土工格室等4种加筋土进行拉拔试验.研究结果表明,4种加筋土中,土工格室与碎石土的界面摩擦强度最高,构成的加筋体承受变形的能力最强;黏土-碳纤维布构成的加筋体界面摩擦强度最低,但具有筋土间相互作用发挥较快、允许变形小的特点;不同加筋体的允许变形差别较大,在实际工程中应充分考虑.提出了一种考虑土工格室加强区的无黏性土-土工格室界面最大摩阻力计算理论模型,研究结果可为加筋土工程筋材选取提供参考. |
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| AbstractList | TU411; 加筋土具有良好的工程性能,被广泛应用于加固路基和边坡支挡等领域,筋土界面摩擦强度对支挡结构的整体性和稳定性具有重要影响.为研究不同加筋土的界面摩擦特性,自制拉拔装置,对黏土-土工格栅、黏土-碳纤维布、黏土-土工格室和碎石土-土工格室等4种加筋土进行拉拔试验.研究结果表明,4种加筋土中,土工格室与碎石土的界面摩擦强度最高,构成的加筋体承受变形的能力最强;黏土-碳纤维布构成的加筋体界面摩擦强度最低,但具有筋土间相互作用发挥较快、允许变形小的特点;不同加筋体的允许变形差别较大,在实际工程中应充分考虑.提出了一种考虑土工格室加强区的无黏性土-土工格室界面最大摩阻力计算理论模型,研究结果可为加筋土工程筋材选取提供参考. |
| Abstract_FL | Reinforced soil is widely used in the reinforcement of roadbeds,slope retaining walls,and other areas due to its excellent engineering performance.The interfacial friction strength between reinforcement and soil has a significant impact on the overall integrity and stability of the retaining structures.To investigate the interface friction characteristics of different reinforced soils,pull-out tests are conducted using a self-made pull-out apparatus on four types of reinforced soils:clay-geogrid,clay-carbon fiber cloth,clay-geocell,and gravel soil-geocell.Among the tested reinforced soils,the interface friction between geocell and gravel soil demonstrates the highest strength,indicating superior resistance to deformation.Conversely,clay reinforced by carbon fiber fabric exhibits the lowest interface friction strength,however,it displays a faster interaction with the soil with allowable minimal deformations.There is a significant difference in allowable deformations of different types of reinforced soils,which should be fully considered in practical engineering applications.A theoretical model for calculating interfacial friction resistance between non-cohesive soil and geocell reinforcement zone is proposed.The research findings can provide reference for the selection of reinforcement materials in reinforced soil engineering. |
| Author | 曹峥 李梦竹 屈畅姿 周详详 刘泽 |
| AuthorAffiliation | 湘潭大学土木工程学院,湖南湘潭 411105%湖南科技大学土木工程学院,湖南湘潭 411201 |
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| Author_FL | CAO Zheng ZHOU Xiangxiang LI Mengzhu QU Changzi LIU Ze |
| Author_FL_xml | – sequence: 1 fullname: QU Changzi – sequence: 2 fullname: CAO Zheng – sequence: 3 fullname: LIU Ze – sequence: 4 fullname: ZHOU Xiangxiang – sequence: 5 fullname: LI Mengzhu |
| Author_xml | – sequence: 1 fullname: 屈畅姿 – sequence: 2 fullname: 曹峥 – sequence: 3 fullname: 刘泽 – sequence: 4 fullname: 周详详 – sequence: 5 fullname: 李梦竹 |
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| DocumentTitle_FL | Frictional characteristics of reinforced soil interfaces based on pullout tests |
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| Keywords | 界面摩擦强度 interfacial friction strength 碎石土 土工格室 峰值位移 pull-off test 岩土工程 拉拔试验 reinforced soil 加筋土 gravel soil geocell geotechnical engineering peak displacement |
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| Title | 基于拉拔试验的加筋土界面摩擦特性 |
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