| 曲线箱梁桥的地震反应分析 |
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| 引用本文： | 刘保纲,郭咏辉. 曲线箱梁桥的地震反应分析[J]. 土木工程学报, 2003, 36(10): 56-59 |
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| 作者姓名： | 刘保纲 郭咏辉 |
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| 作者单位： | 1. 郑州铁路局
2. 郑州市政勘测研究院 |
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| 摘 要： | 根据薄壁箱梁的翘曲扭转理论,建立了可以考虑截面翘曲和偏心影响的3维空间曲线箱梁桥的位移模式和能量泛函,利用有限元列式建立了动力方程。并编制了相应的程序。最后通过算例说明了翘曲扭转对曲线箱梁桥影响较大,不可忽略。
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| 关 键 词： | 曲线箱梁桥 翘曲 扭转 |
| 文章编号： | 1000-131X(2003)10-0056-04 |
| 修稿时间： | 2001-06-22 |
SEISMIC ANALYSIS OF CURVED BOX - GIRDER BRIDGE |
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| Liu Baogang Guo Yonghui. SEISMIC ANALYSIS OF CURVED BOX - GIRDER BRIDGE[J]. China Civil Engineering Journal, 2003, 36(10): 56-59 |
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| Authors: | Liu Baogang Guo Yonghui |
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| Affiliation: | Liu Baogang Guo Yonghui(Zhenzhou Railway Administration) (Zhenzhou Civil Engineering Survey & Design Institute) |
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| Abstract: | The seismic analysis of a curved box-girder bridge is carried out in the paper. It is based on the theory of warping and torsion of the thin-walled beam. The 3-D displacement model and the energy functional are derived. It is considered that the noncoincidence of the shear center and centroid. A finite element formulation of the curved box-girder is established. At same time, a relative program is developed. a numerical example is given. It is found that the effect of warping and torsion on the curved box-girder bridge can not be negleted. |
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| Keywords: | curved box-girder bridge warping torsion |
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