关键词: 拱桥, 钢箱梁, 支架, 吊装

Abstract: The steel box girder on the arch of Nujiang Fourth-line Super-large Bridge is constructed by the support method after scheme comparison. This paper carries out the design and working condition analysis of the support on the arch, and studies the key points and key technical measures of the hoisting construction of the steel box girder on the arch. The synchronous construction of steel box girder and steel-concrete composite beam is realized. The structure is stable and the linear control precision is high in the construction process. The smooth closure of steel box girder and steel-concrete composite beam is completed, which provides a reliable basis for the construction of steel box girder and steel-concrete composite beam of deck arch bridge.

Key words: archbridge, steel box girder, bracket, hoistin