| 桥墩柔性防撞装置的静力学模型研究 |
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| 引用本文： | 杨峰,杨黎明. 桥墩柔性防撞装置的静力学模型研究[J]. 固体力学学报, 2011, 0(Z1) |
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| 作者姓名： | 杨峰 杨黎明 |
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| 作者单位： | 宁波大学机械工程与力学学院; |
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| 基金项目： | 国家自然科学基金(10872101.); 浙江省科技厅项目(2009C13008) |
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| 摘 要： | 文章利用一个简单模型,分析了我国自主研发的桥梁柔性防撞装置的基本静力学性能.即分析研究了装置分别在平动、转动以及平动转动耦合时的结构响应.构建物理模型:两个刚性的椭圆型结构箱梁环绕在桥墩上,箱梁之间由均布弹簧圈支撑连接.研究表明:1)纯平动下,无量纲化弹性反力与平动方向不一致,可以分解为垂直方向上两个分力,分别与各自方向上的无量纲位移近似认为是线性关系,外力通过椭圆中心时需要外扭矩平衡装置,无量纲平衡扭矩与无量纲位移平方成正比;2)纯转动下,转角很小时,无量纲扭矩为转角的三次方函数.此外,文章还定性的分析了平动转动同时发生时的力学性能,即:平动对扭矩转角关系的影响、转动对力位移关系的影响.
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| 关 键 词： | 船撞桥墩 柔性防撞装置 静力学模型 无量纲化 等效弹性系数 平衡扭矩 |
RESEARCH ON THE STATICS MODEL OF THE CRASHWORTHY DEVICE FOR THE BRIDGE PILE |
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| Feng Yang Liming Yang. RESEARCH ON THE STATICS MODEL OF THE CRASHWORTHY DEVICE FOR THE BRIDGE PILE[J]. Acta Mechnica Solida Sinica, 2011, 0(Z1) |
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| Authors: | Feng Yang Liming Yang |
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| Affiliation: | Feng Yang Liming Yang(Faculty of Mechanical Engineering and Mechanics,NingBo University,NingBo,351211) |
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| Abstract: | The basic statics mechanical properties of a bridge pile crashworthy device developed independently by China are analyzed using a simple model.Analytical investigations of the model give the translation and rotation response of it,as well as the coupling between the two deformation models.The physics model is consisted of two elliptical rigid box-beams linked by distributed spoke spring elements.At translation case,the direction of the nondimensional reaction force(NRF) is different from the translation dir... |
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| Keywords: | ship-pile collision flexible crashworthy device the statics model nondimensional equivalent elastic coefficient balance torque |
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