| 中墙对框架桥力学特性的影响 |
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| 引用本文： | 王建省,李卓宇,孙雪倩,史青雲.中墙对框架桥力学特性的影响[J].吉首大学学报(自然科学版),2021,42(1):54-60. |
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| 作者姓名： | 王建省 李卓宇 孙雪倩 史青雲 |
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| 作者单位： | （北方工业大学土木工程学院，北京 100144） |
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| 基金项目： | 国家自然科学基金资助项目(11572001)；国家自然科学基金资助项目（51478004）；2020 年度北京市大学生创新创业训练计划项目（216051360020XN190） |
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| 摘 要： | 以某框架桥实际工程为背景,建立了框架桥在设计荷载作用下的模型,并研究了中墙对框架桥力学特性的影响.经对比分析发现,中墙这一自变量使得框架桥顶板和底板的竖向位移、竖向轴力、剪力,以及顶板的弯矩、截面应力的绝对值减少,框架桥底板的弯矩、截面应力的绝对值增加,且顶板的竖向位移受中墙的影响最大,底板的剪应力受中墙的影响最小.
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| 关 键 词： | 中墙 力学特性 地道桥 有限元分析 |
Influence of the Middle Wall on the Mechanical Characteristics of Frame Bridges |
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| WANG Jianxing,LI Zhuoyu,SUN Xueqian,SHI Qingyun.Influence of the Middle Wall on the Mechanical Characteristics of Frame Bridges[J].Journal of Jishou University(Natural Science Edition),2021,42(1):54-60. |
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| Authors: | WANG Jianxing LI Zhuoyu SUN Xueqian SHI Qingyun |
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| Institution: | （College of Civil Engineering, North China University of Technology, Beijing 100144, China） |
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| Abstract: | This paper takes an actual frame bridge as the engineering background, establishes a model of the bridge under design load, and analyzes the influence of the middle wall on the mechanical characteristics of the frame bridge. Comparative research shows that the extreme values of the top and bottom plates of the frame bridges decrease in vertical displacement, vertical axial force, shear stress; the extreme values of the curvature change and cross-sectional stress of the top plates decrease, while those of the bottom places increase. The research also shows that the vertical displacement of the top plates is most obviously affected by the middle wall and the shear stress of the bottom plates is lest affected by the middle wall. |
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| Keywords: | middle wall mechanical characteristics underpass bridge finite element analysis |
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