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首页> 美国卫生研究院文献>Materials >In Situ Experimental Study on the Behavior of UHPC Composite Orthotropic Steel Bridge Deck
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In Situ Experimental Study on the Behavior of UHPC Composite Orthotropic Steel Bridge Deck

机译：UHPC复合正交异性钢桥面板性能的原位试验研究

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摘要

A novel ultra high performance concrete (UHPC) layer composite orthotropic steel deck was adopted in the construction of a new bridge in China to improve the fatigue performance of the orthotropic steel deck plate and reduce the disease of surface wearing layer. In situ experiments were conducted to study the UHPC layer’s impact on the behavior of the orthotropic steel deck. The test vehicle loads were applied on the deck plate before and after UHPC layer paving, the stresses where fatigue cracks usually occur and the deflections of critical sections were measured. The test results verified that the UHPC composite steel deck system could significantly reduce the stress of the rib-to-deck connection region and the stress at the bottom toe of rib-to-diaphragm weld. In addition, it slightly influenced the performance of U shape rib, girder web-to-deck and diaphragm cutout.
机译：在中国新建的桥梁中，采用新型超高性能混凝土（UHPC）层复合正交异性钢桥面，以改善正交异性钢桥面板的疲劳性能并减少表面磨损层的病害。进行了原位实验，以研究UHPC层对正交异性钢甲板性能的影响。在UHPC层铺装前后，将试验车辆载荷施加到甲板上，测量通常会出现疲劳裂纹的应力并测量关键截面的挠度。测试结果证明，UHPC复合钢甲板系统可以显着降低肋骨到甲板连接区域的应力以及肋骨到膜片焊接底部趾部的应力。此外，它对U形肋，梁腹板到甲板和隔板切口的性能产生了轻微影响。

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