双曲拱桥维修加固设计

Reinforcement Design of Double Curved Arch Bridges

文章针对老桥设计图纸遗失的双曲拱桥,通过现场病害调查、几何尺寸测量和专项检测,参考同时代双曲拱桥设计图纸,对老桥结构进行了合理的数据恢复、结构计算和病害原因分析。针对桥梁的具体情况,采用了拱上建筑减载与局部结构加强相结合的加固方法,明显改善了主拱圈的受力状态,提高了桥梁结构的通行能力。

Through on-site damage investigation,geometric dimension measurement,special detection,and referring to the design drawings of the contemporary double curved arch bridge,this paper carries out reasonable data recovery,structural calculation and damage analysis of the old double curved arch bridge with the design drawings missed.According to the situation of the bridge,the reinforcement method combining load reduction of spandrel structure with strengthening of partial structure is adopted,which improves the stress state of the main arch ring and the traffic capacity of the bridge structure.