Wide-body double-width bridge erecting machine and erecting method thereof

Abstract

The invention belongs to the technical field of bridge erection, and discloses a wide-body double-width bridge erecting machine and an erecting method thereof. According to the wide-body double-widthbridge erecting machine, a left steel beam and a right steel beam can be erected at the same time under the condition that the position of a bridge erecting machine main body is not changed. The wide-body double-width bridge erecting machine comprises a main beam, a four-front supporting leg system, a middle supporting leg and a tail supporting leg; and the four-front supporting leg system comprises four same front supporting legs and a front supporting leg cross beam, the front supporting leg cross beam is arranged on the main beam, so that the left steel beam and the right steel beam can beerected by the bridge erecting machine at the same time, therefore, rapid hoisting of the steel beams is realized. According to the wide-body double-width bridge erecting machine, the erecting construction is performed; the additional stress generated due to the fact that the front cross beam is arranged later is avoided, so that the stress state of the steel beams in the bridge forming process isthe same as that of the design; the aerial operation risk is reduced, so that the safety and reliability of the bridge erection construction are improved; the front cross beam is arranged in a steelbeam assembly field, so that the construction progress is accelerated; and the left steel beam and the right steel beam can be hoisted at the same time, so that the working efficiency of the bridge erecting machine is improved.

Description

technical field [0001] The invention relates to the technical field of bridge erection, in particular to a wide-body double-width bridge erection machine and an erection method thereof. Background technique [0002] The bridge erecting machine is used in the construction of numerous bridge superstructures. The girder bridge is a widely used structural form. Its main components are: foundation, piers, prefabricated beams and bridge deck from bottom to top. The bridge erecting machine is the key equipment in the construction process, and its function is to hoist the poured prefabricated beams to the designated installation position on the pier. In addition, since bridges are usually composed of multiple spans, and the hoisting of prefabricated beams can only be carried out span by span, the bridge erecting machine not only has the function of hoisting prefabricated beams, but also has the ability to move forward, that is, the so-called span hole capacity. Prestressed concret...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the front outriggers of the bridge erecting machine in the prior art often only have two front outriggers, when the bridge erecting machine is hoisting, the front outriggers fall on the front end of the cover beam, thereby making room for the steel beams and falling beams to be hoisted, but The front outrigger has a shortcoming. Aiming at the problem that the hoisting of the whole hole of the steel beam whose front end exceeds the cover beam and the front end is closed cannot meet the hoisting requirements, the bridge erecting machine needs to be erected separately on the left and right sides, and the construction progress is slow. The invention provides a wide body Double-width bridge erecting machine, the wide-body double-width bridge erecting machine can erect the left and right two steel beams at the same time without changing the position of the main body of the bridge erecting machine, including the main beam, four front outrigger system, middle outrigger, and tail outrigger The four-front outrigger system includes four identical front outriggers and a front outrigger crossbeam, the front outrigger crossbeam is set on the main beam; four front outriggers are arranged in a row on the front outrigger crossbeam, each front The upper part of the outriggers is hinged with the crossbeam of the front outriggers. The column of each front outrigger can be stretched and rotated longitudinally in the height direction. Legs, so that the bridge erecting machine can erect the left and right steel girders successively, so as to realize the rapid hoisting of the steel girders;

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