Descending type suspended casting hanging basket and construction method thereof

Abstract

The invention discloses a descending type suspended pouring hanging basket and a construction method thereof. The hanging basket comprises a formwork force bearing piece (1), a bearing walking bracket (2), an adjusting oil cylinder (3), a cantilever truss (4), a flange formwork (5), a side attachment support (6), a formwork system (7), a rear hanging system (8), a front hanging system (9), an in-box support (10) and a top formwork (11). The main stress structure and the working platform are moved downwards to the position below the bridge floor, the space of the bridge floor is released, the construction risk is reduced, the walking working face is moved to the position of the web, automatic walking can be achieved, elevation adjustment of the cantilever structure can be achieved, the overall structure is stable, forward moving is convenient, and safety and reliability are achieved.

Description

Technical field [0001] The present invention is in the field of bridge construction, in particular to a downlink of formula Suspension Cast Cradle and construction method. Background technique [0002] The following defects existing Cradle bridge construction: [0003] 1) deck clutter, the difference between the line of sight, multiple restriction face - Basket existing on the market usually have a cantilever structure TRUSS, triangular truss, steel girder, Bailey beam, bow structure, a common feature in the above structure are required large temporary steel bridge arrangement formed on a sufficiently strong force boom system, under normal circumstances, the same kind of structure, the same material forming the main boom force structure height the higher, the stronger the cantilever bending resistance, and therefore, in the field deck disposed relatively high steel frame body (generally greater than 4M); in addition, the connecting lines between the frame body, the entire running...

AI Technical Summary

Problems solved by technology

[0003] 1) The bridge deck is messy, the line of sight is poor, and there are many restrictions on the working surface. The cantilever structures of the existing hanging baskets on the market usually include diamond trusses, triangular trusses, steel plate girders, Bailey beams, bowstring structures, etc. The common feature of the above structures is that they all need to be installed A large number of temporary steel structures are arranged on the bridge surface to form a strong enough cantilever bearing system. Usually, the higher the height of the main cantilever bearing structure formed by the same structure and the same material, the stronger the bending resistance of the cantilever. Therefore, the on-site The bridge deck is equipped with a relatively high steel frame (generally greater than 4m); in addition, the connecting system between the frames, the running device of the entire hanging basket, and the anchoring device are all arranged on the bridge deck, plus The exposed steel bars reserved on the bridge deck leave relatively limited space for other operations, and the entire bridge deck is often disorganized, making it difficult to meet the requirements of civilized construction

[0004] 2) The running conditions of the bridge deck are relatively poor - the flatness of the cast-in-place bridge deck is usually relatively low, and at the same time, a rough surface needs to be left to form a reliable bond with the bridge deck pavement. Therefore, the bridge deck provides the hanging basket structure. The running surface is not very good. It is necessary to lay out a certain density of pad beams and copy pads or mortar at the same time to meet the flatness requirements of the running sliding surface of the hanging basket, which brings a lot of work to move the pad beams and tracks. , and because the unevenness of the base surface is relatively random, it brings great difficulties to the realization of automatic walking

[0005] 3) The safety risk of traditional hanging basket formwork adjustment is high - the adjustment of traditional hanging basket formwork is generally at the front end of the cantilever truss, and it is also at the highest point of the entire hanging basket structure, which brings certain safety risks

[0006] 4) The adjustment work is cumbersome - the traditional hanging basket hangs the front end of the hanging basket template through the steel plate sling with multiple pin holes. A single adjustment is time-consuming and labor-intensive, especially when the monitoring unit requires adjustment to the command value, there is often the problem of repeated adjustments, which increases the workload

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