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基于深梁试样的压实黏土抗拉强度试验研究

China Rural Water and Hydropower(2023)

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Abstract
将深梁试样引入压实黏土抗拉强度测试中,分析了不同含水率和干密度条件下的抗裂特性演化规律,包括荷载-挠度曲线、抗拉强度和能量参数.结果表明:压实黏土破坏模式与含水率密切相关,不受干密度影响;含水率和干密度对压实黏土试样抗拉强度影响显著,抗拉强度含水率升高先增大后减小,随干密度增大呈线性递增;断裂耗散能随含水率增大呈先增大后减小变化,高含水率时裂纹延展耗能更多.弹性储备能和裂缝延展能随试样干密度增大逐渐增大,弹性储备能增幅更大.
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Key words
deep beam specimen,moisture content,dry density,compacted clay,tensile strength
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