船舶碰撞搁浅中强肋框承受面内载荷时变形机理研究

高振国1,胡志强1,2

振动与冲击 ›› 2015, Vol. 34 ›› Issue (8) : 55-60.

PDF(1121 KB)
PDF(1121 KB)
振动与冲击 ›› 2015, Vol. 34 ›› Issue (8) : 55-60.
论文

船舶碰撞搁浅中强肋框承受面内载荷时变形机理研究

  • 高振国1,胡志强1,2
作者信息 +

Structural deformation mechanism analysis of web girders during ship collision and grounding accidents

  • Gao Zhenguo1, Hu Zhiqiang1,2*
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文章历史 +

摘要

以船舶碰撞与搁浅中强肋框构件为研究对象,用塑性力学解析理论研究强肋框构件承受面内载荷时的结构变形机理,并据板材面内受压变形时的新特点,提出新的强肋框板面内受压变形模式。在此基础上运用塑性力学理论推导出结构变形能、瞬时结构变形阻力及平均结构变形阻力的解析计算公式。利用已有试验结果对该解析计算方法进行验证。结果表明,该方法准确度高、解析计算方便,适用于船体抗撞性结构设计及船舶碰撞与搁浅事故风险快速评估。

Abstract

The structural deformation mechanism of web girders subjected to in-plane load during ship collision and grounding accident were investigated with the plastic analytical theory and some new features during deformation process were found. A new deformation model for ship web girders subjected to in-plane force was proposed based on the new features. In the new model, the analytical formulae for energy dissipation, instantaneous force and mean resistance of web girders were obtained by plastic analysis. Finally, the new analytical method was verified by two previous model tests. The results of the new analytical method and model tests match well. Benefiting from its good accuracy and simplicity, the new analytical method can be a useful tool in preliminary structural design stage for ship crashworthiness and quick assessment for risk during ship collision and grounding accidents.

关键词

船舶碰撞和搁浅 / 强肋框 / 变形机理 / 解析计算 / 试验验证

Key words

 
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ship collision and grounding, web girders, deformation mechanism, analytical method, model test verification

引用本文

导出引用
高振国1,胡志强1,2. 船舶碰撞搁浅中强肋框承受面内载荷时变形机理研究[J]. 振动与冲击, 2015, 34(8): 55-60
Gao Zhenguo1, Hu Zhiqiang1,2. Structural deformation mechanism analysis of web girders during ship collision and grounding accidents[J]. Journal of Vibration and Shock, 2015, 34(8): 55-60

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