Synchronous construction method of double bridges at equal intervals by means of segmental assembly bridge girder erection machine

Abstract

The invention provides a synchronous construction method of double bridges at equal intervals by means of a segmental assembly bridge girder erection machine. The method comprises the following stepsthat 1, a lifting crane is mounted on the bridge girder erection machine, wherein the lifting crane comprises a cross beam and two cantilever beams arranged below the cross beam, and two sets of girder hanging vehicles are arranged on the lower end surface of each cantilever beam; 2, a first set of hanging points and a sixth set of hanging points are arranged at both ends of a hanging cross beam,and two sets of hanging points are arranged relative between the first set of hanging points and the sixth set of hanging points; 3, multiple sets of segmental blocks are hoisted in sequence during bridge girder erection, hoisting of each set of segmental blocks includes hoisting of segmental blocks on the left side and hoisting of segmental blocks on the right side, the intervals of two adjacentsets of segmental blocks are adjusted to complete construction. According to the synchronous construction method of the double bridges at equal intervals by means of the segmental assembly bridge girder erection machine, through arrangement of the left and right cantilever beams on the cross beam of the lifting crane and multiple sets of hanging points on the hanging cross beam, the left bridge and right bridge of the double bridges can be transversely moved, beam feeding on the tail portion is achieved, so that construction of the double bridges is completed.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for synchronous construction of an equidistant double-width bridge using segmental assembly bridge erecting machines. 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. This construction method needs to move the bridge erecting machine back and forth laterally twice, that is, after the mobile bridge erecting machine completes the construction of a pair of bridges, it will move the whole machine to another bridge again through the transverse movement luffing mechanism. The number of bridge crane passes is doubled, which greatly increases the ope...

AI Technical Summary

Problems solved by technology

This construction method needs to move the bridge erecting machine back and forth laterally twice, that is, after the mobile bridge erecting machine has constructed a pair of bridges, it will move the whole machine laterally to another bridge for construction through the traverse luffing mechanism again, and the erection of the single construction The number of bridge crane passes doubles, which greatly increases the operational risk of the equipment and prolongs the 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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