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工业建筑  2010 

锈蚀钢筋混凝土矩形梁截面延性分析

DOI: 10.13204/j.gyjz201006006, PP. 21-26

Keywords: 锈蚀,钢筋混凝土矩形梁,屈服曲率,极限曲率,曲率延性

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Abstract:

对锈蚀钢筋混凝土梁的延性特征展开研究,结合48根梁(32根锈蚀梁和12根对比试验梁)的试验数据,在平截面假定不再成立的前提下,回归分析得出不同锈蚀程度的梁在钢筋屈服和极限状态时钢筋与混凝土的应变关系,通过此应变关系得到锈蚀梁在钢筋屈服和极限状态时受压区高度的计算表达式,从而得到了锈蚀梁曲率延性系数的计算模型;根据计算模型,绘制不同锈蚀程度梁的M-φ曲线,并分析了不同锈蚀程度梁的延性变化特征及原因。

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