桥梁建设
橋樑建設
교량건설
BRIDGE CONSTRUCTION
2009年
6期
6-10
,共5页
铁路桥%高速铁路%钢桁拱%桥梁架设%合龙
鐵路橋%高速鐵路%鋼桁拱%橋樑架設%閤龍
철로교%고속철로%강항공%교량가설%합룡
railway bridge%high-speed railway%steel truss arch%bridge erection%closure
京沪高速铁路南京大胜关长江大桥主桥为2联(84+84) m连续钢桁梁+(108+192+336+336+192+108) m六跨连续钢桁拱桥.大跨度连续钢桁拱主跨钢梁采用3层吊索塔架,钢梁与墩旁托架固结、3层水平索架设方法,主跨合龙采用以调整斜拉索和水平索、钢梁预先纵移为主要手段,不需顶落梁,实现钢梁跨中合龙的新技术.
京滬高速鐵路南京大勝關長江大橋主橋為2聯(84+84) m連續鋼桁樑+(108+192+336+336+192+108) m六跨連續鋼桁拱橋.大跨度連續鋼桁拱主跨鋼樑採用3層弔索塔架,鋼樑與墩徬託架固結、3層水平索架設方法,主跨閤龍採用以調整斜拉索和水平索、鋼樑預先縱移為主要手段,不需頂落樑,實現鋼樑跨中閤龍的新技術.
경호고속철로남경대성관장강대교주교위2련(84+84) m련속강항량+(108+192+336+336+192+108) m륙과련속강항공교.대과도련속강항공주과강량채용3층조색탑가,강량여돈방탁가고결、3층수평색가설방법,주과합룡채용이조정사랍색화수평색、강량예선종이위주요수단,불수정락량,실현강량과중합룡적신기술.
The main bridge of Nanjing Dashengguan Changjiang River Bridge on Beijing-Shanghai High-Speed Railway is a steel truss arch bridge composed of two units of (84+84) m continuous steel truss girders and six spans of (108+192+336+336+192+108) m continuous steel truss arches. The steel girders of the main spans of the long span continuous steel truss arch bridge were erected by the aid of the three-level tower bents, fixity of the girders with pier-side brackets and the three-level horizontal cables. The closure at the midspans of the steel girders was realized by the new technique mainly by means of adjusting the stay and horizontal cables and longitudinally moving the girders in advance without jacking up and down the girders.
