Ribbon-shaped single-tower cable-strayed-steel structure combined bridge and construction process thereof

Abstract

The invention discloses a ribbon-shaped single-tower cable-strayed-steel structure combined bridge and a construction process thereof. The combined bridge comprises a lower supporting structure, a main beam, an arch-shaped main tower which is arranged on the main beam and gradually backwards inclined from bottom to top, and two ribbon-shaped supporting structures which are positioned at the rear side of the main tower; the two ribbon-shaped supporting structures are both integrally fixedly connected with the main beam; the two-ribbon-shaped supporting structures and the main beam are lengthways arranged along the bridge direction; a plurality of cable-strayed ropes are arranged between the main tower and the main beam; each ribbon-shaped supporting structure is divided into a lower ribbon-shaped supporting structure and an upper ribbon-shaped connecting structure through the main beam. The construction process of the combined bridge comprises the steps of 1, constructing the lower supporting structure; 2, constructing the lower ribbon-shaped supporting structure; 3, constructing the main beam; 4, constructing the main tower and the upper ribbon-shaped connecting structure. The combined bridge is reasonable in structural design, convenient to construct, outstanding in mechanical performance and a good in use effect; a non-back cable-stayed bridge and a continuous rigid structural bridge are effectively combined, and the advantages of the two bridges are brought into full play.

Description

technical field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a ribbon-shaped single-tower cable-stayed-rigid structure composite bridge and its construction technology. Background technique

[0002] At present, with the development of bridge technology and design theory, various long-span and super-long bridge structures have become more common. Moreover, composite structure bridges have been widely used in bridge engineering due to their multiple advantages such as overall stress and material use, rationality, economy, and better landscape effects. However, from the perspective of overall development trend, the existing bridge design scheme still has the problem that the conventional structure bridge is large but not new, and the composite structure bridge is new but not simple. Not often. The cable-stayed bridge without back cables is a commonly used form of cable-stayed bridges, and its landscape effect and mec...

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