| 考虑约束效应的型钢混凝土梁抗弯承载力计算分析 |
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| 引用本文： | 张根俞,梁书亭,朱筱俊,覃志尚.考虑约束效应的型钢混凝土梁抗弯承载力计算分析[J].东南大学学报(自然科学版),2009,39(3). |
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| 作者姓名： | 张根俞 梁书亭 朱筱俊 覃志尚 |
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| 作者单位： | 1. 东南人学土木工程学院,南京,210096
2. 东南人学建筑设计研究院,南京,210096 |
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| 摘 要： | 针对强度叠加法在计算型钢混凝土梁抗弯承载力时过于保守的实际情况,将约束混凝土理论应用于型钢混凝土抗弯承载力的计算中,以考虑型钢及箍筋对混凝土的有效约束作用,并将混凝土划分为约束区与非约束区混凝土.详细介绍了箍筋位置梁横截面约束混凝土面积计算方法,分析了梁中箍筋间距的影响,同时将型钢与箍筋对混凝土的有效约束应力转化为混凝土的约束强度,得到了梁截面中约束区混凝土面积及强度的计算方法.在此基础上,对强度叠加法进行了修正,建立了最大叠加强度的型钢混凝土梁抗弯承载力计算方法.与21个试验值对比分析表明,该计算公式与试验值符合良好.
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| 关 键 词： | 型钢混凝土 抗弯承载力 约束效应 |
Analysis on bend bearing capacity of steel-encased concrete beams considering the effect of confinement |
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| Zhang Genyu,Liang Shuting,Zhu Xiaojan,Qin Zhishang.Analysis on bend bearing capacity of steel-encased concrete beams considering the effect of confinement[J].Journal of Southeast University(Natural Science Edition),2009,39(3). |
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| Authors: | Zhang Genyu Liang Shuting Zhu Xiaojan Qin Zhishang |
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| Institution: | Zhang Genyu1 Liang Shuting1 Zhu Xiaojun2 Qin Zhishang1(1School of Civil Engineering,Southeast University,Nanjing 210096,China)(2Architectural Design , Research Institute,China) |
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| Abstract: | Aiming at the practical situation of being excessively conservative when calculating the bend bearing capacity of steel-encased concrete beams using the strength superposition method,confined concrete theory is applied in calculating the bend bearing capacity of SRC(steel reinforced concrete members).The efficient confinement effect of steel and stirrups on the concrete is taken into account,and the concrete is divided into two parts,the confinement area and the unconfinement area.The calculating method of ... |
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| Keywords: | steel-encased concrete bending bearing capacity confinement effect |
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