| 再生粗骨料钢筋混凝土梁短期刚度研究 |
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| 引用本文： | 杨桂新,吴瑾,叶强. 再生粗骨料钢筋混凝土梁短期刚度研究[J]. 土木工程学报, 2010, 0(2) |
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| 作者姓名： | 杨桂新 吴瑾 叶强 |
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| 作者单位： | 南京航空航天大学; |
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| 基金项目： | 国家高新技术研究发展计划(863)2009AA032301 |
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| 摘 要： | 对27根再生混凝土梁和3根普通混凝土梁进行正截面弯曲性能试验,研究再生混凝土梁短期刚度及其计算方法。试验结果表明,相同条件下再生混凝土梁跨中挠度比普通混凝土梁跨中挠度大11%左右。参考普通混凝土梁,根据试验结果回归出再生混凝土梁内力臂系数、截面弹塑性抵抗矩系数以及不均匀系数表达式,从而得出再生混凝土梁短期刚度的计算式。通过收集国内外再生混凝土梁试验结果对本文刚度公式进行验证,两者吻合较好。
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| 关 键 词： | 再生混凝土 梁 短期刚度 挠度 |
Study on short term stiffness of reinforced concrete beams with recycled coarse aggregates |
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| Yang Guixin Wu Jin Ye Qiang. Study on short term stiffness of reinforced concrete beams with recycled coarse aggregates[J]. China Civil Engineering Journal, 2010, 0(2) |
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| Authors: | Yang Guixin Wu Jin Ye Qiang |
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| Affiliation: | Yang Guixin Wu Jin Ye Qiang(Nanjing University of Aeronautics , Astronautics,Nangjing 210016,China) |
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| Abstract: | The flexural properties of 27 reinforced concrete beams with recycled aggregates and 3 reinforced concrete beams with ordinary aggregates are experimentally investigated. The calculation method for the stiffness of reinforced concrete beams with recycled aggregates is studied. The results show that the mid-span deflection of the concrete beams with recycled coarse aggregates is larger than that of the ordinary aggregate concrete beams by 11%,with other conditions identical. The internal force arm coefficien... |
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| Keywords: | recycled aggregate concrete beam short term stiffness deflection |
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