| 麦秸秆形状效应对加筋盐渍土抗变形能力的影响 |
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| 引用本文： | 余沛,柴寿喜,魏丽.麦秸秆形状效应对加筋盐渍土抗变形能力的影响[J].路基工程,2012,0(1):4-6. |
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| 作者姓名： | 余沛 柴寿喜 魏丽 |
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| 作者单位： | 天津城市建设学院天津市软土特性与工程环境重点试验室，天津 300384 |
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| 基金项目： | 国家自然科学基金，天津市高等学校科技发展基金 |
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| 摘 要： | 以等围压和减围压应力路径三轴压缩试验，研究不同加筋形状麦秸秆的加筋盐渍土的抗变形性能。研究结果表明:1/4圆弧状麦秸秆的加筋土的强度最大、抗变形能力最强，在相同围压下，1/4圆弧状的麦秸秆加筋土的强度增长速度较快。在低围压时，麦秸秆加筋土的偏应力应变曲线呈硬化型，在高围压时，曲线呈软化型。圆管状加筋土破坏形式主要为局部破坏，1/4圆弧状加筋土为整体破坏，1/2圆弧状加筋土破坏形式介于圆管状和1/4圆弧状之间。1/4圆弧状的麦秸秆加筋土的抗变形能力最优。
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| 关 键 词： | 加筋盐渍土 加筋形状 麦秸秆 三轴压缩试验 应力路径 |
| 收稿时间： | 2019-11-10 |
Effect of Wheat Straw Shapes on Deformation Resistance of Reinforced Saline Soil |
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| Authors: | YU Pei CHAI Shou-xi WEI Li |
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| Institution: | (Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin Institute of Urban Construction,Tianjin 300384,China) |
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| Abstract: | The anti-deformation performance of reinforced saline soil with different shapes of wheat straw was studied by means of conventional and reduced triaxial compression tests.The analyzing result shows that the reinforced saline soil with wheat straw of quarter-circular arc shape has the largest strength and the best anti-deformation performance;under the same confining pressure,its strength increases fast.The deviatoric stress-strains curves presents strain-harden in case of low confining pressure and strain-soften in case of high confining pressure.Reinforced soil with circular tube mainly showed partial destruction,that with quarter-circular is overall damaged,and that with semicircular arc is damaged to the extent between circular tube and quarter-circular arc,in which that with quarter-circular has the best anti-deformation performance. |
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| Keywords: | reinforced saline soil shape of reinforced material wheat straw triaxial compression test stress paths |
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