| 大跨度连续梁桥的地震时程反应分析 |
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| 引用本文： | 任慧,白宝鸿.大跨度连续梁桥的地震时程反应分析[J].国防交通工程与技术,2008,6(6):17-20. |
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| 作者姓名： | 任慧 白宝鸿 |
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| 作者单位： | 石家庄铁道学院土木分院,河北,石家庄,050043 |
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| 摘 要： | 运用有限元程序Midas对哈（尔滨）一大（连）铁路客运专线大连至沈阳段营海特大桥主桥大跨预应力混凝土连续梁进行了自振特性分析及地震荷载作用下的时程分析，通过计算得出了连续梁的前十阶的频率、振型，并进一步计算了在地震作用下结构的内力和位移，计算结果显示在罕遇地震作用下墩底可能会出现塑性铰导致桥墩产生塑性变形，为结构安全性的验证提供了可靠的参考数据。
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| 关 键 词： | 桥梁 地震反应 大跨预应力混凝土连续梁 动力时程分析 弹塑性 |
Analysis of the Earthquake-Time-Response of Large-Span Continuous Beam Bridges |
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| Ren Hui,Bai Baohong.Analysis of the Earthquake-Time-Response of Large-Span Continuous Beam Bridges[J].Traffic Engineering and Technology for National Defence,2008,6(6):17-20. |
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| Authors: | Ren Hui Bai Baohong |
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| Institution: | Ren Hui,Bai Baohong (Civil Engineering School of Shijiazhuang Railway Institute,Shijiazhuang 050043,China) |
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| Abstract: | The finite element program Midas is used to analyze and calculate the self-vibrating characteristics and the time-response of the large-span continuous pre-stressed concrete beam,under the earthquake load,of the main span of the Yinhai Mega bridge of the Dalian-Shenyang Passengers-oriented Railway in the paper,on the basis of which the top 10 bands of frequency,the vibration mode of the continuous beam,and further,and the internal forces and displacement caused by earthquake,are calculated.The calculated re... |
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| Keywords: | seismic response of bridges large-span pre-stressed continuous concrete beam dynamic time analysis elastoplastic |
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