配筋超高性能混凝土(UHPC)梁弯曲试验研究

China Concrete and Cement Products(2021)

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Abstract
开展了2根超高性能混凝土(UHPC)梁和1根钢筋混凝土(RC)梁的对比试验研究,得到了3根构件的承载力-挠度曲线、裂缝开展图和跨中截面应变图.结果表明:UHPC梁的受力过程可分为弹性阶段、裂缝开展阶段、屈服阶段和完全破坏阶段;钢纤维可以防止构件发生斜拉破坏;UHPC梁具有刚度大和延性大的特点;UHPC梁的开裂荷载高于RC梁,正截面承载力计算时不能忽略UHPC的抗拉强度.
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