连续梁施工技术

Construction Technology of Continuous Beam

徐州京杭运河特大桥梁体采用纵向、横向、竖向三向预应力体系。上部结构采用(60+100+60)m现浇预应力混凝土双线连续梁。桥下通航净高大于7.5m,满足Ⅱ级航道通航要求。本文对挂篮现浇预应力连续箱梁部分加以介绍,以供同类施工参考。

The extra large bridge of Beijing-Hangzhou canal in Xuzhou adopts longitudinal, vertical and horizontal prestressing system. It adopts （60＋100＋60）m dual-line continuous beams with cast-in-situ prestress concrete in superstructure. The navigable clear height under the bridge is beyond 7.5m, which meet the navigation requirements of channelII. This paper introduces the cradle cast-in-place prestress continuous beams, to provide reference for the similar construction.