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再生混凝土砌块砌体基本力学性能研究

DOI: 10.13197/j.eeev.2014.03.133.chenzf.018, PP. 133-141

Keywords: 再生混凝土砌块,抗压性能,抗剪性能,剪-压相关曲线,变摩擦系数

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Abstract:

通过对再生混凝土砌块砌体的轴心抗压、沿通缝抗剪及剪-压复合抗剪试验,研究其破坏特征及力学性能。得出砌体抗压强度设计值略低于混凝土多孔砖砌体的抗压强度规范设计值;给出再生混凝土砌块砌体的抗压强度平均值建议公式、受压应力-应变曲线建议公式、弹性模量及泊松比的建议取值。指出砌体沿通缝截面抗剪强度比普通混凝土多孔砖砌体的抗剪强度规范值有较大幅度提高;给出再生混凝土砌块砌体沿通缝截面抗剪强度平均值建议公式;绘制出其实测剪-压相关曲线,并给出剪摩、剪压、斜压3种破坏模式的建议界限值及变摩擦系数剪摩理论的抗剪强度建议公式。

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