| 剪切变形对波形钢腹板箱梁挠度的影响 |
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| 引用本文： | 李宏江,叶见曙,万水,吴文清.剪切变形对波形钢腹板箱梁挠度的影响[J].交通运输工程学报,2002,2(4):17-20. |
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| 作者姓名： | 李宏江 叶见曙 万水 吴文清 |
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| 作者单位： | 东南大学,交通学院,江苏,南京,210096 |
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| 基金项目： | 国家自然科学基金项目 (5 0 0 780 14 ) |
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| 摘 要： | 波形钢腹板箱梁是一种新型的钢 -混凝土组合结构 ,与传统混凝土腹板箱梁相比 ,其挠度计算中剪切变形的影响是不可忽略的。结合波形钢腹板箱梁的结构特点并应用初等梁理论 ,提出该种箱梁受弯时考虑了剪切变形影响的挠度计算方法 ,通过模型试验和有限元分析进行了验证 ;同时指出不同剪跨比 ,剪切变形对箱梁挠度的影响是不同的 ,并就考虑剪切变形影响与否的剪跨比界限值提出建议解此微分方程即可得到考虑剪切变形对挠度影响时梁的总挠度 y。考察简支梁在一集中荷载作用下的情况 ,如图 5所示 ,集中荷载 P作用在梁跨中 ,梁跨径为 l,对任意截面而言 ,剪力如下 0≤ x≤ l2 ,Q( x) =P/2 ;l2
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| 关 键 词： | 波形钢腹板箱梁 剪切变形 挠度 剪跨比 |
| 文章编号： | 1671-1637(2002)04-0017-04 |
| 修稿时间： | 2002年5月26日 |
Influence of shear deformation on deflection of box girder with corrugated steel webs |
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| LI Hong jiang,YE Jian shu,WAN Shui,WU Wen qing.Influence of shear deformation on deflection of box girder with corrugated steel webs[J].Journal of Traffic and Transportation Engineering,2002,2(4):17-20. |
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| Authors: | LI Hong jiang YE Jian shu WAN Shui WU Wen qing |
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| Abstract: | The box girder with corrugated steel webs is a new type of composite steel concrete structure. Compared with conventional box girders with concrete webs, the influence of shear deformation may be not ignored in its deflection calculation. Combining structural properties of box girder with corrugated steel webs and the theory of elementary beams, a calculation method of its deflection under flexure, which considers the influence of shear deformation on it, is provided. The results of model tests and finite element analysis further testify it. With different shear span ratios, the influence of shear deformation on the box girder deflection is different, thus a limit value of shear span ratio is suggested for considering the influence of shear deformation or not.2 tabs,9 figs,6 refs. |
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| Keywords: | box girder with corrugated steel webs shear deformation deflection shear span ratio |
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