| 基于数字图像测量技术的加筋土三轴试验研究 |
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| 引用本文： | 刘文白,陈子祎,苏丽娟.基于数字图像测量技术的加筋土三轴试验研究[J].土木工程学报,2011(Z2):41-45. |
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| 作者姓名： | 刘文白 陈子祎 苏丽娟 |
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| 作者单位： | 上海海事大学; |
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| 基金项目： | 国家自然科学基金(51078228,50909057); 上海海事大学科研项目(20110005),上海海事大学校级重点学科建设项目(A290209002); 上海市第四期本科教育高地建设项目(B210008G); 海洋公益性行业科研专项经费项目(201105024) |
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| 摘 要： | 通过加筋土固结排水三轴试验,结合三轴试验土样变形数字图像测量系统,研究加筋中砂试样在三轴试验条件下的变形场。加筋材料采用玻璃纤维土工格栅,分别在4种不同布筋位置、3种不同围压下共进行45组试验。试验结果表明:在应变达到一定程度的情况下,土工格栅对中砂的强度和抵抗变形的能力的增强效果随布筋层数的增加而增大,单独布一层筋的加筋土的三轴试验中,围压越大加筋效果越明显,三层加筋的加筋土三轴试验中情况则相反;土工格栅对中砂的横向变形有很大的约束作用,这一约束作用随着围压的增大而增大,且随着围压从100kPa增大到300kPa的过程中水平约束作用增加28%～50%。
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| 关 键 词： | 加筋土 三轴试验 数字图像测量 变形场 |
Study on the triaxial text of reinforced soil based on digital image processing technique |
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| Liu Wenbai Chen Ziyi Su Lijuan.Study on the triaxial text of reinforced soil based on digital image processing technique[J].China Civil Engineering Journal,2011(Z2):41-45. |
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| Authors: | Liu Wenbai Chen Ziyi Su Lijuan |
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| Affiliation: | Liu Wenbai Chen Ziyi Su Lijuan (Shanghai Maritime University,Shanghai 200135,China) |
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| Abstract: | This study focuses on the deformation field of the reinforced soil based on consolidated drained triaxial test together with digital image processing technique to measure deformation of soil specimen in triaxial test.In order to make analysis and comparison,45 groups of triaxial tests,with 4 different reinforced positions and 3 confining stresses,were performed on the glass fiber geogrid reinforced samples.The results show that the intensity and the anti-deforming capability of medium sand were enhanced as ... |
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| Keywords: | reinforced soil triaxial text digital image processing deformation field |
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