奉节梅溪河大桥系主跨为 2 88.0 m上承式钢管砼桁架无铰拱桥 ,钢管拱桁架节段采用煨弯新技术于工厂内加工制作而成。通过工程实例 ,介绍了钢管拱桁架节段主弦管煨弯的设备、原理方法、技术特点、操作要点等内容。实践表明 :奉节梅溪河大桥钢管拱桁架节段主弦管采用煨弯技术加工制造是成功的 ,值得推广与借鉴 Fengjie Meixi River Bridge main span of 2 88.0 m on the steel tube truss truss hingeless arch bridge, steel arch trusses curved section of the new technology in the factory processing made. Through the engineering examples, the equipment, principle, method, technical characteristics, operation points and so on of the steel pipe arch trusses are introduced. Practice shows that Fengxi Meixi River Bridge arch steel truss section of the main chord curved pipe bending technology is successful, it is worth to promote and learn from.