Universal type arch bridge suspender maintaining system and construction method

Abstract

The invention discloses a universal type arch bridge suspender maintaining system and a construction method. The maintaining system comprises two on-arch supporting beams arranged on the top face of an arch rib and a beam-bottom supporting beam arranged at the bottom of a crossbeam. Tension devices are arranged on the on-arch supporting beams. The upper ends of a plurality of tension anchor cables penetrate through each on-arch supporting beam and are anchored on the top surface of the on-arch supporting beam. The tension anchor cables extend towards the transverse ends of the beam-bottom supporting beam. The lower ends of the tension anchor cables penetrate through middle transfer beams and are anchored on the bottom faces of the middle transfer beams. The middle transfer beams are connected with the transverse ends of the beam-bottom supporting beam through connecting rods with adjustable lengths. The two ends of the connecting rods are hinged to the middle transfer beams and the transverse ends of the beam-bottom supporting beam correspondingly. The maintaining system and the construction method can be applied to maintaining projects of parallel suspenders of all kinds of vertical arch faces, suspender maintaining in different positions and at different spatial angles can be conducted by arranging the on-arch supporting beams in different positions and adjusting the lengths of the connecting rods, and the quite good adaptability and universality are achieved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a general arch bridge suspender maintenance system and a construction method. Background technique [0002] Tied arch bridge is a typical bridge type among arch bridges. It is widely used due to its low requirements on geological conditions. The suspender is one of the main force-bearing components of the tied arch bridge. The lower end is connected to the beam and the upper end is connected to the arch rib. , plays an important role in transferring the bridge deck load to the arch ribs. [0003] During the long-term operation period, there will be various defects and diseases in the suspenders, which will lead to the unsafe use of the arch bridge. If the suspenders are not repaired in time, it will inevitably cause bridge disasters. Therefore, maintenance work must be carried out on the suspenders. The existing arch bridge The boom maintenance system is mainly suitab...

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Problems solved by technology

[0003] During the long-term operation period, there will be various defects and diseases in the suspenders, which will lead to the unsafe use of the arch bridge. If the suspenders are not repaired in time, it will inevitably cause bridge disasters. Therefore, maintenance work must be carried out on the suspenders. The existing arch bridge The boom maintenance system is mainly suitable for the parallel boom maintenance of the vertical arch surface, and it is difficult to adapt to the cross boom maintenance of the space arch surface. Boom Repair

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