| 大跨径钢管混凝土桁架拱桥稳定性分析 |
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| 引用本文： | 王艳,陈淮.大跨径钢管混凝土桁架拱桥稳定性分析[J].铁道科学与工程学报,2010,7(1). |
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| 作者姓名： | 王艳 陈淮 |
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| 作者单位： | 郑州大学土木工程学院,河南,郑州,450001;郑州大学土木工程学院,河南,郑州,450001 |
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| 基金项目： | 河南省杰出人才计划项目(084200510003) |
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| 摘 要： | 对小三峡大桥主桥即中承式钢管混凝土桁架拱桥的空间稳定性进行了分析。采用Midas/civil有限元程序建立该拱桥的空间有限元计算模型,对其进行了空间稳定性计算与分析。计算结果表明:该拱桥拱肋的横向刚度较小,可以通过优化拱肋截面尺寸与改善横撑结构形式达到提高拱肋横向刚度的目的;桥面系面外刚度略小,需要加强预制小T梁与横梁的连接,同时加大边纵梁的截面尺寸并与横梁固结,以提高桥面系的面外刚度,使桥面系形成强大的梁格体系,共同抵抗外荷载的作用。
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| 关 键 词： | 钢管混凝土桁架拱桥 有限元法 稳定性 |
Stability analysis of long span concrete filled steel tubular truss arch bridge |
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| WANG Yan
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CHEN Huai.Stability analysis of long span concrete filled steel tubular truss arch bridge[J].Journal of Railway Science and Engineering,2010,7(1). |
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| Authors: | WANG Yan CHEN Huai |
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| Affiliation: | School of Civil Engineering;Zhengzhou University;Zhengzhou 450001;China |
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| Abstract: | Spacial stability analysis for the main bridge of Xiao San-xia bridge,i.e.,a half though concrete filled steel tubular truss arch bridge was carried out.The spacial finite element calculating model of the bridge was established by adopting finite element program Midas/civil to calculate and analyze the stability of the bridge.The results show that the transverse stiffness of arch rib is weak,so optimizing the section of arch rib and the structural form of transverse bracings may improve it.The out of plane ... |
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| Keywords: | concrete filled steel tubular truss arch bridge finite element method stability |
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