Cast-in-situ beam formwork with translation slip form spiral type backout bracket support device

Abstract

The invention relates to a cast-in-situ beam formwork with a translation slip form spiral type backout bracket support device and belongs to a construction device for city rail transit lines. The cast-in-situ beam formwork is characterized in that a support device and a translation slide device are mounted on a formwork truss. The translation slide device is characterized in that a load-bearing axle sleeves a bolt, and connecting plates sleeve two ends of the bolt. The support device is characterized in that a lower sleeve is mounted on a support seat, a jacking screw is mounted in the lower sleeve, a rotating lever is mounted in the middle of the jacking screw and located above the lower sleeve, a connecting seat is mounted at the upper end of the jacking screw, and an upper sleeve is arranged below the connecting seat. The cast-in-situ beam formwork has the advantages that the formwork is simple in structure and high in practicality; when box girder concrete is poured, the formwork is slid forwards to an adjacent working face and used, the spiral type backout bracket support device is used to jack the formwork when the formwork is slid in position, and the formwork can be ascended and descended effectively. Compared with a traditional hoisting and transferring construction method, the cast-in-situ beam formwork has the advantages that cast-in-situ beam formwork cycling speed is increased, fast construction of a cast-in-situ beam is guaranteed, and the overall appearance quality of the beam is improved.

Description

Technical field: [0001] The utility model relates to a cast-in-place beam formwork with a translation sliding form spiral-type falling frame supporting device, which belongs to a construction device for urban rail transit line construction, and specifically relates to a large-scale steel formwork for cast-in-place beams. Background technique: [0002] At present, most urban rail transit lines are located on the main traffic arterial roads in the city. During the construction of the traffic lines, the following main problems need to be solved: [0003] 1. The surrounding buildings, factories, and residential buildings in some sections are relatively close to the line, and the amount of demolition work needs to be reduced, resulting in a narrow construction site and some difficult areas for traffic relief. The width of the bridge deck is 10.4m, and the width of the enclosure is only 11.4m. After erection, there is no construction site, large-scale hoisting machinery cannot be ...

AI Technical Summary

Problems solved by technology

[0003] 1. The surrounding buildings, factories, and residential buildings in some sections are relatively close to the line, and the amount of demolition work needs to be reduced, resulting in a narrow construction site and some difficult areas for traffic relief. The width of the bridge deck is 10.4m, and the width of the enclosure is only 11.4m. There is no construction site after erection, large-scale hoisting machinery cannot be put in place, and steel formwork cannot be installed and removed by crane

[0004] 2. There are a total of 7 different spans of simply supported beams in the elevated section of some tenders, 250 holes, and a maximum span of 40m. All of them are cast-in-place brackets. Some sections are affected by pipelines (high-voltage lines, military optical cables, gas, etc.), and the construction of cast-in-place beams It is extremely difficult and the construction intensity is high; the cast-in-place beam is located in the urban development zone, and it will become a major landscape of the city after it is completed. The construction period can only be guaranteed, and the site does not have the conditions for hoisting, so it is necessary to study and solve the problem of horizontal slippage of large steel formwork on the support and the problem of support

If the existing support is used for formwork drop, the construction will be cumbersome, which will cause great difficulties and interference to the construction, and it is necessary to optimize and simplify the support

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