Beam feeding hoisting method for tail part of double-width bridge

Abstract

The invention provides a beam feeding hoisting method for a tail part of a double-width bridge. The beam feeding hoisting method comprises the steps that 1, a crane is mounted on a bridge girder erection machine, and the crane comprises a cross beam, a hanger and two cantilever beams, wherein the hanger is located on the lower end face of the cross beam, the two cantilever arms are arranged on thelower end face of the cross beam, four beam hanging trolleys are evenly arranged on the lower end face of each cantilever arm correspondingly, and each beam hanging trolley can slide; and 2, a firstset of hanging points, a second set of hanging points, a third set of hanging points, a fourth set of hanging points, a fifth set of hanging points and a sixth set of hanging points are arranged on the upper end face of the hanging cross beam, beam feeding hoisting can be conducted on a left width bridge body and a right width bridge body of the double-width bridge between the second set of hanging points and the third set of hanging points as well as between the third set of hanging points and the fourth set of hanging points relative to the length direction of the hanging cross beam. According to the beam feeding hoisting method for the tail part of a double-width bridge segmental block, simultaneous construction of the double-width bridge is achieved, the situation that in a traditionalconstruction method, the bridge girder erection machine needs to be shifted back and forth twice is avoided, the longitudinal hole passing times of the bridge girder erection machine are reduced by ahalf, the operation risks of equipment are reduced greatly, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for hoisting beam feeding at the rear of a double-width bridge. Background technique [0002] For the segmental prefabricated bridges of double-lane highways, the current domestic segmental erecting machines are generally used for traditional single-width bridge construction, that is, after the construction of one bridge, the whole machine is moved laterally to the other bridge through the traverse luffing mechanism. construction. Moreover, this construction method needs to move the bridge erecting machine back and forth twice, that is, after the mobile bridge erecting machine has completed the construction of a pair of bridges, the whole machine will be moved laterally to another bridge construction through the traverse luffing mechanism again, thus greatly increasing the equipment cost. Operational risk prolongs the construction period. Moreover, in the a...

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Problems solved by technology

Moreover, this construction method needs to move the bridge erecting machine back and forth twice, that is, after the mobile bridge erecting machine has completed the construction of a pair of bridges, the whole machine will be moved laterally to another bridge construction through the traverse luffing mechanism again, thus greatly increasing the equipment cost. Operational risk, extended construction period

In addition, in the actual construction process, the water depth cannot meet the requirements of floating beam transportation, and the feeding of beams under the bridge cannot be realized, so it is necessary to feed the beams at the tail of the bridge crane.

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