| 弯剪扭共同作用下预应力混凝土箱梁抗扭极限强度的理论计算方法 |
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| 引用本文： | 徐艳秋,季文玉,许克宾.弯剪扭共同作用下预应力混凝土箱梁抗扭极限强度的理论计算方法[J].北京交通大学学报(自然科学版),1998,22(1):2. |
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| 作者姓名： | 徐艳秋 季文玉 许克宾 |
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| 作者单位： | 北方交通大学土木建筑工程学院 |
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| 摘 要： | 根据预应力混凝土箱梁在弯剪扭共同作用下的抗扭特性，以修正斜压场理论和薄壁管理论为基础，提出了适用于弯剪扭共同作用下预应力混凝土箱梁的抗扭极限强度计算的理论模型．所建立的计算公式不仅理论基础强、简洁易行，而且与所验证的２４根模型构件的试验结果符合良好．
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| 关 键 词： | 预应力混凝土 抗扭 软化混凝土 箱梁 |
A Theoretical Calculating Method for Ultimate Torsional
Strength of Prestressed Concrete Box Beams |
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| Xu Yanqiu\ Ji Wenyu\ Xu Kebin.A Theoretical Calculating Method for Ultimate Torsional
Strength of Prestressed Concrete Box Beams[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,1998,22(1):2. |
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| Authors: | Xu Yanqiu\ Ji Wenyu\ Xu Kebin |
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| Abstract: | A theoretical model for ultimate torsional strength of prestressed concrete box beams in combined with bending, shear and torsion is presented. The basis of the modified compression field theory and the thin walled tube theory, the calculating formulas that are presented not only have very strong theoretical base, clear concept and easy to apply, but also argee with the experimental results of the twenty four prestressed concrete box beams. The comparison showed a good agreement. |
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| Keywords: | prestressed concrete\ torsion\ softening concrete\ box beams |
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