桥面铺装改造对正交异性钢桥面板受力性能的影响

发布时间：2017-12-31 20:10

本文关键词：桥面铺装改造对正交异性钢桥面板受力性能的影响　出处：《桥梁建设》2016年04期 　论文类型：期刊论文

【摘要】：为了验证桥面铺装改造对正交异性钢桥面板的加固效果,以某公路简支钢箱梁为背景进行研究。选取3跨箱梁,分别采用聚合物混凝土、夹心钢板系统和活性粉末混凝土3种桥面铺装方案对钢桥面板进行加固,并通过实桥试验测试改造前、后正交异性钢桥面板的应力及局部变形,验证加固效果。结果表明:原铺装与裸面板状态下钢桥面板的受力及变形规律基本一致,原铺装基本不参与正交异性钢桥面板共同受力;3种铺装改造后,钢桥面板应力及局部变形均有较大降低,但钢桥面板应力及变形的改善效果仍面临长期运营的检验。
[Abstract]:In order to verify the reinforcement effect of deck pavement reconstruction on orthotropic steel bridge slab, the study was carried out on the background of a highway simply supported steel box girder. Three span box girder was selected and polymer concrete was used respectively. The steel deck was strengthened by sandwich steel plate system and reactive powder concrete, and the stress and local deformation of orthotropic steel deck were tested before and after the test. The results show that the stress and deformation of the steel bridge slab under the condition of bare slab are basically the same, and the original pavement is not involved in the orthotropic steel bridge slab. After three kinds of pavement modification, the stress and local deformation of steel bridge face slab are greatly reduced, but the improvement effect of steel bridge slab stress and deformation still faces the test of long-term operation.
【作者单位】：中国铁道科学研究院;
【分类号】：U443.33
【正文快照】： 1引言正交异性钢桥面板(Orthotropic Steel Deck)由面板、纵肋和横肋通过焊接连接组成,三者互相垂直,共同受力,运营中其既作为桥面板承受汽车轮载,又作为主梁的一部分参与主梁的共同工作。由于正交异性钢桥面板具有重量轻、静承载能力大的优点,自20世纪50年代德国首先把正交异

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