苏庆田, 李杰, 董冰. 钢主梁拱桥组合桥面系力学性能分析[J]. 工程力学, 2012, 29(增刊I): 1-7. DOI: 10.6052/j.issn.1000-4750.2011.11.S035
引用本文: 苏庆田, 李杰, 董冰. 钢主梁拱桥组合桥面系力学性能分析[J]. 工程力学, 2012, 29(增刊I): 1-7. DOI: 10.6052/j.issn.1000-4750.2011.11.S035
SU Qing-tian, LI Jie, DONG Bing. MECHANICAL BEHAVIOR ANALYSIS OF COMPOSITE DECK FLOOR OF ARCH BRIDGE WITH STEEL GIRDER[J]. Engineering Mechanics, 2012, 29(增刊I): 1-7. DOI: 10.6052/j.issn.1000-4750.2011.11.S035
Citation: SU Qing-tian, LI Jie, DONG Bing. MECHANICAL BEHAVIOR ANALYSIS OF COMPOSITE DECK FLOOR OF ARCH BRIDGE WITH STEEL GIRDER[J]. Engineering Mechanics, 2012, 29(增刊I): 1-7. DOI: 10.6052/j.issn.1000-4750.2011.11.S035

钢主梁拱桥组合桥面系力学性能分析

MECHANICAL BEHAVIOR ANALYSIS OF COMPOSITE DECK FLOOR OF ARCH BRIDGE WITH STEEL GIRDER

  • 摘要: 钢-混凝土组合结构桥面系近几年开始在拱桥结构中使用,拱桥中组合桥面系受力复杂,其力学性能受钢与混凝土是否连接、是否张拉系杆以及混凝土的浇注顺序等影响。该文采用空间有限元模型,开展了钢主梁拱桥组合桥面系的力学性能研究。研究表明:在钢主梁拱桥结构中混凝土桥面板与钢主梁是否结合对桥面系的整体受力影响甚微,只对桥面系局部位置的混凝土桥面板应力分布有所影响;拱桥中是否安装系杆对桥面系的受力影响较大,而且桥面系的受力与系杆张拉力有密切关系;对于组合桥面系的拱桥采用一次浇筑混凝土桥面板施工方法的桥面系受力要明显优于采用分段浇筑混凝土桥面板的方法。

     

    Abstract: A steel-concrete composite deck has been used in acrh bridges recently. The mechanism of a composite deck is complex, and was affected by the factors of setting connections between concrete decks and steel girder or not, setting tied bars or not, different deck concrete casting sequences etc. In this paper, mechanical behaviors of a composite deck floor of an arch bridge with steel girders are analyzed by a spatial finite element model. The research results show that whether setting connections between concrete decks and a steel girder or not slightly affects the total mechanical behavior of a deck floor but influents the local stress of the deck; whether setting tied bar affects the deck floor mechanical property greatly and the deck floor stress depends on the tension force of tied bars heavily; as to arch bridge with a composite deck floor, the mechanical behavior of deck floors with casting deck concrete by one time is superior to that of deck floors with casting deck concrete by several times.

     

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