| 基于影响线法的汽车渡船跳板主梁的强度计算 |
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| 引用本文： | 朱志宏.基于影响线法的汽车渡船跳板主梁的强度计算[J].山东交通学院学报,2012,20(2):17-20. |
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| 作者姓名： | 朱志宏 |
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| 作者单位： | 安徽机电职业技术学院汽车工程系,安徽芜湖,241000 |
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| 摘 要： | 汽车渡船跳板主梁断裂破坏的主要原因是弯曲强度不足。在结构自重及移动载荷共同作用时,用影响线法对33 m汽车渡船跳板的主梁进行强度校核,指出主梁在移动载荷作用时用影响线法较容易确定结构的内力和最不利位置,对主梁上多于2个集中载荷、且载荷不对称于跨中时,利用影响线法可从包络图中找出最大弯矩和剪力,比按两端自由支撑梁计算偏安全。
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| 关 键 词： | 汽车渡船跳板 影响线法 主梁 强度 最大弯矩 |
The Calculation of Flexural Strength of Vehicle Ferry Gangplank Girder Based on Influence Matrix |
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| ZHU Zhi-hong.The Calculation of Flexural Strength of Vehicle Ferry Gangplank Girder Based on Influence Matrix[J].JOURNAL OF SHANDONG JIAOTONG UNIVERSITY,2012,20(2):17-20. |
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| Authors: | ZHU Zhi-hong |
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| Institution: | ZHU Zhi-hong(The Department of Automotive Engineering,Anhui Technical College of Mechanical and Electrical Engineering,Wuhu 241000,China) |
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| Abstract: | The inadequacy of flexural strength is the main cause of girder break of vehicle ferry gangplank.With the influence of the structure self-weight and moving load,the influence matrix is used to check the strength of 33 m vehicle ferry gangplank girder.When the girder is worked by the moving load,the influence matrix easily determines the internal structure and the most disadvantageous position.When there are two more concentrated loads on the girder which are asymmetric in the midspan,the influence matrix can be used to find the maximum bending moment and shear force from the envelope diagram,which is more reliable than the calculation by the two free-end supporting beam. |
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| Keywords: | vehicle ferry gangplank influence matrix girder strength maximum bending moment |
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