砾砂与混凝土管界面剪切力学特性试验
U473; 基于数字图像相关技术,通过自主研制的可视化直剪容器,对砾砂与混凝土管接触面在常法向应力作用下的剪切力学特性进行较系统的试验研究.试验结果表明:砾砂-混凝土管界面初始剪切模量随法向应力的增大而增大;Dr=0.8的砾砂土样与混凝土接触面的摩擦系数较Dr=0.4时增大约17.5%,相对密实度每增大0.2,摩擦角平均增大2°;砾砂-混凝土接触面的剪应力-剪切位移曲线软化程度随法向应力增大逐渐减小,硬化程度逐渐明显;土体剪切位移随着与接触面距离的增加而增大,剪切变形主要发生在剪切错动带内,剪切错动带厚度约为3D50....
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Published in | 东北大学学报(自然科学版) Vol. 41; no. 3; pp. 424 - 456 |
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Main Authors | , , , |
Format | Journal Article |
Language | Chinese |
Published |
东北大学 资源与土木工程学院,辽宁 沈阳,110819%山东建筑大学 土木工程学院,山东 济南,250014
01.03.2020
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Abstract | U473; 基于数字图像相关技术,通过自主研制的可视化直剪容器,对砾砂与混凝土管接触面在常法向应力作用下的剪切力学特性进行较系统的试验研究.试验结果表明:砾砂-混凝土管界面初始剪切模量随法向应力的增大而增大;Dr=0.8的砾砂土样与混凝土接触面的摩擦系数较Dr=0.4时增大约17.5%,相对密实度每增大0.2,摩擦角平均增大2°;砾砂-混凝土接触面的剪应力-剪切位移曲线软化程度随法向应力增大逐渐减小,硬化程度逐渐明显;土体剪切位移随着与接触面距离的增加而增大,剪切变形主要发生在剪切错动带内,剪切错动带厚度约为3D50. |
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AbstractList | U473; 基于数字图像相关技术,通过自主研制的可视化直剪容器,对砾砂与混凝土管接触面在常法向应力作用下的剪切力学特性进行较系统的试验研究.试验结果表明:砾砂-混凝土管界面初始剪切模量随法向应力的增大而增大;Dr=0.8的砾砂土样与混凝土接触面的摩擦系数较Dr=0.4时增大约17.5%,相对密实度每增大0.2,摩擦角平均增大2°;砾砂-混凝土接触面的剪应力-剪切位移曲线软化程度随法向应力增大逐渐减小,硬化程度逐渐明显;土体剪切位移随着与接触面距离的增加而增大,剪切变形主要发生在剪切错动带内,剪切错动带厚度约为3D50. |
Author | 程诚 赵文 李天亮 韩健勇 |
AuthorAffiliation | 东北大学 资源与土木工程学院,辽宁 沈阳,110819%山东建筑大学 土木工程学院,山东 济南,250014 |
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Author_FL | ZHAO Wen CHENG Cheng HAN Jian-yong LI Tian-liang |
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Title | 砾砂与混凝土管界面剪切力学特性试验 |
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