| 钢-预应力混凝土组合梁抗扭极限分析 |
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| 引用本文： | 吴中鑫,杨平. 钢-预应力混凝土组合梁抗扭极限分析[J]. 武汉理工大学学报(交通科学与工程版), 2010, 34(2): 362-365,369. DOI: 10.3963/j.issn.1006-2823.2010.02.036 |
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| 作者姓名： | 吴中鑫 杨平 |
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| 作者单位： | 1. 武汉二航路桥特种工程有限责任公司,武汉,430063
2. 武汉理工大学交通学院,武汉,430063 |
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| 摘 要： | 根据软化桁架模型理论,通过力及力矩的平衡、变形协调和材料本构关系,得出在转矩作用下预应力组合梁的受扭强度、扭率、应力、应变、扭转角等一系列方程,并推导出在转矩作用下开、闭口截面钢-预应力混凝土组合梁的抗扭极限强度计算公式.
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| 关 键 词： | 钢-预应力混凝土组合梁 软化桁架模型理论 纯扭 抗扭极限强度 |
Analysis of Ultimate Torsional Strength for the Pre-stressed Steel-Concrete Composite Beams |
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| Wu Zhongxin,Yang Ping. Analysis of Ultimate Torsional Strength for the Pre-stressed Steel-Concrete Composite Beams[J]. journal of wuhan university of technology(transportation science&engineering), 2010, 34(2): 362-365,369. DOI: 10.3963/j.issn.1006-2823.2010.02.036 |
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| Authors: | Wu Zhongxin Yang Ping |
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| Affiliation: | Wuhan Second Navigational Road and Bridge Special Engineering Co.LTD/a>;Wuhan 430063/a>;China;School of Transportation/a>;WUT/a>;China |
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| Abstract: | Based on the softened truss model,the equations of the torsional strength,torsional ratio,stress,strain and twisting angle of the pre-stressed steel-concrete composite beams under pure torsion are derived in the paper through the equilibrium conditions of forces and moments,and the deformation and constitutive relationships,as well as the failure criteria of the materials.Finally the ultimate torsional strength formulas are proposed for the pre-stressed steel-concrete composite beams with open/closed sectio... |
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| Keywords: | pre-stressed steel-concrete composite beams soften truss model pure torsion ultimate torsional strength |
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