Abstract:The continuous beam arch composite structure has the advantages of good vertical stiffness and dynamic performance, large span capacity, low building height and beautiful shape . It has been widely used in high-speed railway construction. The main bridge of Zhenjiang Jinghang Canal super major bridge on Lianzhen(Lianyungang-Zhenjiang) high speed railway adopts the composite structure of (76 + 136 + 76) m double track prestressed concrete continuous beam arch. Controlled by the railway line, the bridge has two characteristics: one is to cross the water service area of Jinghang Canal, the other is to widen the deck to meet the needs of beam transportation. This paper mainly introduces the overall structure, static calculation and landscape design of the main girder of continuous beam arch, which provides experience and method for the design of bridge crossing complex waterway.
