| 上承式钢桁梁桥的刚度分析 |
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| 引用本文： | 杨仕若.上承式钢桁梁桥的刚度分析[J].中南林业科技大学学报,2010,30(2). |
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| 作者姓名： | 杨仕若 |
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| 作者单位： | 中南林业科技大学,土木工程与力学学院,湖南,长沙,410004 |
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| 基金项目： | 湖南省自然科学基金资助项目 |
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| 摘 要： | 将列车-上承式钢桁梁桥视为一个整体振动系统。上承式钢桁梁桥采用桁段有限元法离散,列车采用具有26个自由度的二系弹簧车辆空间振动模型。应用弹性系统动力学总势能不变值原理及形成矩阵的"对号入座"法则,建立列车-桥梁时变系统的整体振动方程。以车辆构架在桥上实测的蛇形波作为激振源,计算了列车以不同的速度通过上承式桥梁时列车的振动响应,分析结果表明,该上承式钢桁梁桥具有足够的横、竖向刚度。
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| 关 键 词： | 桥梁工程 上承式钢桁梁 振动 刚度 响应 |
Stiffness analysis of deck truss girder bridge of steel |
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| YANG Shi-ruo.Stiffness analysis of deck truss girder bridge of steel[J].Journal of Central South Forestry University,2010,30(2). |
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| Authors: | YANG Shi-ruo |
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| Institution: | YANG Shi-ruo(School of Civil Engineering , Mechanics,Central South University of Forestry , Technology,Changsha 410004,Hunan,China) |
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| Abstract: | The train and the deck truss girder bridge were coupled together as one composite system.Deck truss girder bridge was idealized as an assemblage of finite truss element and the vehicle space vibration model of two-stage suspension was used,which has 26 degrees of freedom.The equations of the train and deck truss girder bridges time varying system were set up by using the principle of total potential energy with stationary value in elastic system dynamics and theset-in-right-positionrule for forming structur... |
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| Keywords: | bridge engineering deck truss girder bridge vibration stiffness response |
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