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Composite bonded systems for renovations of orthotropic steel bridge decks

机译：用于正交异性钢桥面翻新的复合粘结系统

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摘要

The renovation solution for orthotropic steel bridge decks studied consists of bonding a second steel plate to the existing steel deck in order to reduce the stresses and increase the lifespan of the orthotropic bridge deck. A parametric study was carried out on the flexural behaviour of beams representing the renovation solution using experimental and analytical studies. The influence of different thicknesses, temperatures and spans was tested. The results obtained for the stress reduction factor show that it is independent of temperature. More efficient solutions can be achieved when minimizing the second steel plate thickness and maximizing the adhesive layer thickness reducing the weight and increasing the stiffness of the composite structure. Both elastic behaviour and yield load of the composite beams are dominated by the steel plate properties and therefore not affected significantly by temperature. However, the ultimate failure of the beams occurs by shear of the adhesive layer, the properties of which are affected by temperature.
机译：研究的正交异性钢桥面的翻新解决方案包括将第二块钢板粘结到现有钢质甲板上，以减少应力并增加正交异性桥面的使用寿命。使用实验和分析研究对代表翻新解决方案的梁的弯曲行为进行了参数研究。测试了不同厚度，温度和跨度的影响。应力降低因子获得的结果表明它与温度无关。当最小化第二钢板厚度并最大化粘合剂层厚度时，可以实现更有效的解决方案，从而减少了复合结构的重量并提高了复合结构的刚度。复合梁的弹性性能和屈服荷载都受钢板性能的支配，因此不受温度的影响。然而，梁的最终破坏是由于粘合剂层的剪切而发生的，其性质受温度的影响。

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