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在桥梁结构的生命周期中可能遭受各种各样的荷载,其中船舶撞击就是偶然荷载中的一种,它是影响通航河道和桥梁安全的重要因素。杭州市区跨越京杭大运河的一座双曲拱桥在遭受船撞后,出现拱肋与拱波拉开、立柱开裂等严重结构损伤,承载能力明显下降,以该座桥梁的维修加固为背景,介绍了船撞双曲拱桥的检测评定、维修加固和承载能力提升措施。在校正拱肋和修复立柱的基础上,通过粘贴钢板、增大拱肋截面和加强横向联系等方法有效地修复和加固了桥梁,提高了桥梁承载能力,为相关船撞双曲拱桥以及其他桥梁的检测评定和加固提供参考。
In the life cycle of the bridge structure may suffer a variety of loads, of which the impact of the ship is one of occasional load, it is an important factor affecting the safety of navigable waterways and bridges. A double-curved arch bridge spanning the Beijing-Hangzhou Grand Canal in Hangzhou City suffered serious structural damage such as arch rib and arch wave cracking and column cracking after being subjected to a ship collision, and the bearing capacity of the double-curved arch bridge decreased obviously. Taking the repair and reinforcement of the bridge as the background, The ship collision double curved arch test evaluation, maintenance and reinforcement and carrying capacity to enhance measures. On the basis of the correction of arch ribs and restoration of columns, the bridges are effectively repaired and reinforced by affixing steel plates, increasing the cross-section of arch ribs and strengthening horizontal links, thus improving the carrying capacity of the bridge and assisting the relevant ships to hit the double-curved arch bridge and other bridges The test evaluation and reinforcement provide a reference.