| 波形钢腹板-混凝土组合箱梁截面变形的拟平截面假定及其应用研究 |
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| 引用本文： | 吴文清,叶见曙,万水,胡成.波形钢腹板-混凝土组合箱梁截面变形的拟平截面假定及其应用研究[J].工程力学,2005,22(5):177-180,198. |
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| 作者姓名： | 吴文清 叶见曙 万水 胡成 |
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| 作者单位： | 1. 东南大学交通学院,江苏,南京,210096
2. 合肥工业大学土木工程学院,安徽,合肥,230009 |
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| 摘 要： | 为使波形钢腹板-混凝土组合箱梁的正截面弯曲应力计算能够应用平截面假定,根据该组合箱梁模型试验在弹性阶段的应变实测数据和空间有限元计算结果,忽略波形钢腹板的抗弯贡献,假设上、下翼板的混凝土纵向正应变在弹性阶段符合“拟平截面假定”,并运用变分法理论进行了证明。算例表明据“拟平截面假定”计算的翼板应力计算值与有限元法计算结果吻合。“拟平截面假定”为波形钢腹板-混凝土组合箱梁的弯曲应力计算及抗弯承载力计算在理论上提供了必要的变形协调条件。
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| 关 键 词： | 桥梁工程 计算假定 变分法 拟平截面假定 钢-混凝土组合箱梁 波形钢腹板 变形协调 |
| 文章编号： | 1000-4750（2005）05-0177-04 |
| 收稿时间： | 2003-09-18 |
| 修稿时间： | 2003-09-182004-02-20 |
QUASI PLANE ASSUMPTION AND ITS APPLICATION IN STEEL-CONCRETE COMPOSITE BOX GIRDERS WITH CORRUGATED STEEL WEBS |
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| WU Wen-qing,YE Jian-shu,WAN Shui,HU Cheng.QUASI PLANE ASSUMPTION AND ITS APPLICATION IN STEEL-CONCRETE COMPOSITE BOX GIRDERS WITH CORRUGATED STEEL WEBS[J].Engineering Mechanics,2005,22(5):177-180,198. |
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| Authors: | WU Wen-qing YE Jian-shu WAN Shui HU Cheng |
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| Affiliation: | 1. Southeast University, Nanjing 210096, China; 2. Hefei University of Technology, Hefei 230009, China |
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| Abstract: | A quasi plane assumption is adopted to evaluate the flexural capacity of steel-concrete box girders with corrugated steel webs.The assumption is made based on model test results and data of finite element analysis.It is validated by the theorem of minimum potential energy.Under the hypothesis,the normal stress and flexural deformation in the mid-span of steel-concrete composite box girders with corrugated steel webs agree with that of model test and 3-D finite element analysis excellently. |
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| Keywords: | bridge engineering calculating assumption theorem of minimum potential energy dummy horizontal section assumption steel-concrete composite beam corrugated steel web harmonious deformation |
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