Lateral girder erection and construction method for truss double-girder type bridge girder erection machine

Abstract

The invention belongs to a precast girder mounting construction method, in particular to a lateral girder erection and construction method for a truss double-girder type bridge girder erection machine. A lateral girder erection structure of the truss double-girder type bridge girder erection machine comprises two transverse moving tracks, wherein the two transverse moving tracks are respectively arranged on the tops of bent caps at two ends of a to-be-erected hole; two ends of each transverse moving track are suspended out of the bent caps; outer suspended ends of each transverse moving track are supported on temporary buttresses; a high-position gantry crane structure is arranged on the tops of the two transverse moving tracks; and a transverse moving wheel box serves as a walking system of the high-position gantry crane structure. The construction method comprises the following steps of mounting the temporary buttresses; mounting and reinforcing the transverse moving tracks; mounting main longitudinal girders; and assembling, examining and receiving the bridge girder erection machine. The lateral girder erection method of the truss double-girder type bridge girder erection machine comprises the following steps of girder conveying, girder feeding, girder lifting, transverse moving, girder falling, temporary reinforcing and welding of crossbeams among girders. By the lateral girder erection and construction method for the truss double-girder type bridge girder erection machine, the construction cost is reduced effectively, and construction safety is ensured.

Description

technical field [0001] The invention belongs to a prefabricated beam body installation and construction method, in particular to a side beam feeding and erection construction method of a truss double beam type bridge erecting machine. Background technique [0002] With the rapid development of highway and municipal engineering construction in our country, there are more and more highway and municipal bridge projects, the construction period is getting shorter and shorter, and the construction environment is becoming more and more complex. The site selection of the beam yard is also affected by the construction environment, which has great limitations. The traditional construction method of starting from the bridge and ending at the end of the beam erection, feeding the beams sequentially, and erecting the bridge erecting machine is also not suitable due to factors such as the continuous lengthening of the bridge, the limitation of the site selection of the beam yard, and the...

AI Technical Summary

Problems solved by technology

The site selection of the beam yard is also affected by the construction environment, which has great limitations

The traditional construction method of starting from the bridge and ending at the end of the beam, sequentially feeding the beam, and erecting the bridge machine is not applicable due to the continuous lengthening of the bridge, the limitation of the site selection of the beam yard, and the limitation of the transportation road.

However, use large-tonnage truck cranes or crawler cranes to erect part of the prefabricated girders, and then assemble the bridge erecting machine on the erected girders, and then adopt the scheme of bridge erection frame beams, the entry and exit of equipment in this scheme and the treatment of the construction site for beam erection A large amount of additional cost is required, which is particularly unfavorable to construction cost control; and with the emergence of high piers, higher requirements are also put forward for crane equipment

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