| 门机臂架纵筋失效对其局部稳定性和动刚度的影响 |
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| 引用本文： | 朱晓冬.门机臂架纵筋失效对其局部稳定性和动刚度的影响[J].港口装卸,2004(2):9-11. |
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| 作者姓名： | 朱晓冬 |
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| 作者单位： | 南京惠宁码头有限公司 |
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| 摘 要： | 定量分析箱型结构起重臂下翼缘纵向加劲杆失效对其局部稳定性和动刚度的影响 ,揭示港口门机普遍存在的起重臂受压翼缘板波浪度增大及振动加剧这 2种现象之间的内在联系 ,指出提高其振动基频的有效方法。
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| 关 键 词： | 门机钢结构 局部稳定性 振动分析 |
Dynamic analysis on failure of longitudinal ribbed stiffener in jib of portal crane and its effect to local stability |
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| Abstract: | It analyzes in quantity the failure of longitudinal ribbed stiffener in lower flange plate of box structure of jib of portal crane and its effect to local stability and dynamic stiffness, opens up the inherent relation between the augment of deflection of compressed flange plate of jib and intensive vibration that commonly occurs in portal cranes. It gives the effective way to enhance the fundamental natural frequency. |
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| Keywords: | steel structure of portal crane local stability vibration analysis |
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