| 参数变化对PRC弯梁桥动力性能影响仿真分析 |
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| 引用本文： | 王洪刚,卜建清,付晓瑞.参数变化对PRC弯梁桥动力性能影响仿真分析[J].石家庄铁道学院学报,2011(4):12-18,39. |
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| 作者姓名： | 王洪刚 卜建清 付晓瑞 |
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| 作者单位： | 石家庄铁道大学土木工程学院;石家庄农业学校; |
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| 基金项目： | 国家自然基金(50878134); 河北省自然基金(E20090000904); 河北省科技支撑计划(09215627D) |
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| 摘 要： | 为分析参数变化对PRC弯梁桥动力性能的影响，推导了考虑预应力效应的弯梁桥单元刚度矩阵，并建立了考虑预应力效应的PRC连续箱形弯梁桥模型。采用数值仿真方法，研究了预应力、曲率半径、弯扭刚度比、约束情况、截面翘曲及车速等对PRC箱形弯梁桥自振特性的影响，研究了预应力和曲率半径对PRC箱形弯梁桥动力响应的影响。结果表明：各种参数的变化对PRC弯梁桥的动力性能均有影响，且具有一定的规律性，给出了各设计参数的合理取值范围，对PRC弯梁桥的设计具有一定的参考价值。
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| 关 键 词： | PRC弯梁桥 预应力效应 自振特性 动力响应 |
Effect of Parameters on Dynamic Performance of PRC Curved Box-section Girder Bridge |
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| Wang Honggang,Bu Jianqing,Fu Xiaorui.Effect of Parameters on Dynamic Performance of PRC Curved Box-section Girder Bridge[J].Journal of Shijiazhuang Railway Institute,2011(4):12-18,39. |
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| Authors: | Wang Honggang Bu Jianqing Fu Xiaorui |
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| Institution: | Wang Honggang1,Bu Jianqing1,Fu Xiaorui2 (1.School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China,2.Agricultural School of Shijiazhuang,Shijiazhuang 050041,China) |
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| Abstract: | The purpose of this paper is to analyze the effect of the design parameters on the dynamic performance for PRC curved box girder bridge.Element stiffness matrix is deduced,taking pre-stressing effects into consideration.The PRC continuous curved box girder bridge model is established,including the influence of pre-stressing effects.In the numerical simulation,the effect of design parameters,such as pre-stress,curvature radius,bending-twisting stiffness ratio,constraint formalism,and cross-sectional warp,etc... |
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| Keywords: | PRC curved box girder bridge pre-stressing effect free vibration characteristics dynamic responses |
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