A kind of upper bearing type cable-arch composite structure bridge

Abstract

The invention discloses a deck bridge with a cable-arch combination structure. The deck bridge comprises arch ribs (1), wherein the two ends of each arch rib are connected by an arch rib balance cable (2); the same ends of the two parallel arch ribs (1) are fixedly connected by end cross beams (3) respectively; a middle cross beam (4) is arranged in a region defined by the two end cross beams (3) and the two arch ribs (1); the two ends of the middle cross beam (4) are connected with the parallel arch ribs (1) respectively; the two end cross beams (3) are connected by a bridge-deck cable (5); the bridge-deck cable (5) is arranged on the middle cross beam (4); a bridge-deck steel plate (6) is paved above the bridge-deck cable (5). The deck bridge adopts the cable-arch combination structure for bringing the characteristics of pull bearing of steel cables and pressure bearing of steel pipes into full play, solves the problems of cable anchorage and stabilization, is wide in application range, good in overall stress, light and safe in structure, easy to anchor, convenient to transport and quick to construct, can be subjected to factory production, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a cable-arch structure that uses modern high-strength steel materials (steel cables and steel pipes) to form an integrally stressed cable-arch structure. Compression characteristics to solve the soft and unstable steel cable and use the characteristics of the arch to solve the complex anchoring problem of the two ends of the cable-arch composite structure bridge. Background technique [0002] In order to solve urban road traffic problems, elevated expressways are mostly built, and flyover bridges are also used in three-dimensional road intersections. The girders of these "viaducts" mostly adopt reinforced concrete structures or steel box girder structures, and most of the bridge piers use reinforced concrete structures. Long-term (short months, long-term over a year), it will have a great impact on urban traffic. After completion, it cannot be dismantled, and the safe...

AI Technical Summary

Problems solved by technology

However, the modern cableway bridge is a temporary structure (the service life is only 3 to 5 years), and its foundation is the anchoring structure at both ends of the bridge, and because the anchoring and connection methods of the anchor cables and anchors are relatively complicated, it is not conducive to rapid construction. The traffic of construction vehicles and personnel, the traffic volume of vehicles is limited, and it is used on urban roads, all of which need to be improved

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