有推力钢管砼中承式拱桥吊杆加固技术

有推力钢管砼中承式拱桥投入运营多年后,受建设时技术发展水平的制约和各种因素影响,拱桥吊杆难免出现一些病害。吊杆的损坏,会直接影响桥面系的使用功能,因此研究开发该桥型桥梁的吊杆加固技术很有必要。针对某大桥的吊杆病害情况,结合现场实际,并统筹考虑在完成加固维修后对可更换部件进行更换的方便性,提出增设吊杆和纵向钢梁的方法,有效消除了安全隐患,提高了结构的安全储备,为同类型桥梁的加固改造提供参考。

Study on Strengthening Technology of Suspenders for Half-through Concrete Filled Steel Tube Arch Bridge with Thrust

After being put into operation for several years and due to restrictions of technical development level of construction period and many influence factors,it is hard for suspenders of half-through concrete filled steel tube arch bridge with thrust to avoid diseases.Since the damage of suspenders would directly affect the function of deck,it's necessary to study the strengthening technology of the suspenders for this type of bridge.According to the diseases of suspenders in a bridge,being combined with the actual situation and considering the convenience of replacing the replaceable components after reinforcement and maintenance,a method in this paper has been proposed by adding suspenders and longitudinal steel beam.This method can be used to effectively solve hidden danger,improve the safety margin of the structure and provide efficient reference to the maintenance and strengthening of same type bridge.