Hold hoop type automatic leveling and anchoring device for replacement of steel pipe concrete arch bridge suspenders and suspender replacing method thereof

Abstract

A hold hoop type automatic leveling and anchoring device for replacement of steel pipe concrete arch bridge suspenders comprises upper cross beams, tensioning-end anchorage devices I and II, upper and lower temporary ropes, transfer beams, fixed-end anchorage devices I and II,lower supporting beams and two hold hoop type arch apex anchoring and anti-slip systems installed on a steel pipe concrete arch bridge arch, wherein each hold hoop type arch apex anchoring and anti-slip system consists of two rotary lifting appliances, an anti-slip steel box, an upper cross beam, an anti-slip hold hoop and a rubber pad. In a working state, the upper and lower temporary ropes respectively penetrate through the upper cross beam or the lower transfer beam and a jack and are anchored by using the tensioning-end anchorage devices I and II and the fixed-end anchorage devices I and II, and the lower supporting beams support the lower surfaces of suspender cross beams. The rubber pads are arranged between the anti-slip hold hoops and the side faces of the steel pipe arch, the lower-portion cambered surfaces of the anti-slip steel boxes are fixedly connected with the anti-slip hold hoops, one side of each upper-layer #-shaped structure of the upper cross beams tightly attaches to the side face of the corresponding anti-slip steel box, and the other side of each structure is in bolted connection with the corresponding anti-slip steel box through high-strength screws. The hold hoop type automatic leveling and anchoring device is simple in structure, smaller in size, simple and convenient to construct and high in work efficiency.

Description

technical field [0001] The invention relates to a bridge construction machine tool, in particular to a tool hanger device for replacing the hanger of a steel pipe truss concrete arch bridge and a method for replacing the hanger of the arch bridge. Background technique [0002] At present, most of the suspension rod replacement devices of steel pipe concrete arch bridges are mainly temporary suspension rods or temporary hoisting devices. The upper part of the arch needs to be welded to fix the leveling wedge or anti-slip stop to achieve the leveling of the arch and facilitate the installation of beams. Or the purpose of anti-slip; when the temporary suspender or the temporary hoisting device needs to be transferred to the next suspender replacement place, the beam on the arch needs to be hoisted by large-scale lifting equipment. The disadvantages are: the engineering work is intensive and the welding quality is difficult to control , It is easy to damage the original steel pi...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the suspension rod replacement devices of steel pipe concrete arch bridges are mainly temporary suspension rods or temporary hoisting devices. The upper part of the arch needs to be welded to fix the leveling wedge or anti-slip stop to achieve the leveling of the arch and facilitate the installation of beams. Or the purpose of anti-slip; when the temporary suspender or the temporary hoisting device needs to be transferred to the next suspender replacement place, the beam on the arch needs to be hoisted by large-scale lifting equipment. The disadvantages are: the engineering work is intensive and the welding quality is difficult to control , it is easy to damage the original steel pipe concrete arch rib and coating, the wedge block cannot be used repeatedly, the progress of demolition and restoration work is slow, the consumption of large lifting equipment is large, and the construction cost is high

[0003] The application publication number is: CN102926332 A, and the title of the invention is "tool hanger device and replacement method for steel arch bridge hanger replacement", which discloses a tool hanger device for steel arch bridge hanger replacement, and its disadvantages are still It is necessary to weld the limit device near the position of the suspender at each place. It is difficult to control the welding quality on site, and it will damage the arch rib and coating of the original steel structure. The material of the limit device cannot be used for turnover. The welding position is repaired; the number of steel wire ropes around the arch circle is large, the construction process is complicated, the engineering work intensity is high, the progress of dismantling and restoration work is slow, the consumption of large lifting equipment is large, and the construction cost is high

[0004] In order to solve the above problems, the applicant has applied for the patent No. 201520814605.4, the name of the invention is: "A traction-type tool hanger device for replacing the hanger of the steel tube truss concrete arch bridge", the patent number 201521046495.8, the name of the invention is: " A utility model patent for a traction friction type anchor boom replacement device” has successively disclosed two kinds of “arch bridge boom replacement cable force conversion devices”, which solve the technical problems in the above-mentioned prior art, but both have problems involving machining. There are many components and high manufacturing costs, especially the traction vault anchorage anti-skid system installed on the vault has a large structure size, which is not practical in some places

[0005] For this reason, the applicant submitted an application for an invention patent in 2016 with "the patent application number is 201610664498.0, and the title of the invention is: "Hoop-type Tool Suspender Device for Replacement of Suspenders of Steel Tube Truss Concrete Arch Bridges"" to further solve the problem. However, during the implementation process, it was still found that the patent application technology still has some shortcomings, such as many components involved in machining, and the manufacturing cost is still high, especially the processing and installation of the leveling steel box requires on-site lofting and lowering. Materials, welding, and on-site installation are more intensive

Images