| 腹板几何参数对波纹钢腹板桥梁动力特性的影响 |
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| 引用本文： | 周烨,张健.腹板几何参数对波纹钢腹板桥梁动力特性的影响[J].北方交通,2011,1(7):44-45,78. |
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| 作者姓名： | 周烨 张健 |
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| 作者单位： | 1. 辽宁省交通高等专科学校,沈阳,110122
2. 兰州交通大学土木工程学院,兰州,730000 |
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| 摘 要： | 采用ANSYS建立波纹钢腹板空间有限元模型,分析了波纹钢腹板箱梁的动力特性的影响因素。钢腹板板厚的增大能提高箱梁的刚度,尤其是箱梁扭转刚度的提高。但当板厚增加到一定程度时,提高箱梁刚度的程度就会变小,应结合静力计算和经济要求选择适宜的板厚。折角变大时,箱梁的竖向振动频率会减小,箱梁的扭转振动频率会增大。随着波高的增大,箱梁的抗扭刚度也在不断增大。水平面板长度的变化影响波纹钢腹板的面外刚度的增大和减小。过大时,反而使梁的扭转刚度降低。因此应有其优化范围,不宜过大。
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| 关 键 词： | 桥梁 波纹钢腹板 有限元 动力特性 |
Influence of Geometric Parameter of Webs on Dynamic Characteristics of Bridge with Corrugated Steel Webs |
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| Abstract: | The influencing factors on dynamic characteristics of box girder with corrugated steel webs are analyzed with special finite element model of corrugated steel webs established by ANSYS.The increase of steel web thickness could improve the rigidity of box girder,especially the torsional rigidity.However,when the thickness is increased to a certain extent,the degree of improving the rigidity of box girder will be reduced.Appropriate thickness should be chosen combined with static calculation and economic requ... |
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| Keywords: | Bridge Corrugated steel webs Finite element Dynamic characteristics |
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