Reinforced concrete winding stairs die type formwork and its construction method

Abstract

The invention relates to a reinforced concrete caracol mould type moulding board and a construction method thereof. The moulding board is divided into at least two sections along the spiral direction; various sections are connected with each other end to end by bolts and section end angle irons and are assembled into a spiral line detachable mould type forming steel mouldng board; an inner side plate, an outer side plate, a front side plate and a bottom plate of each section of the detachable mould type forming steel moulding board are all thin steel plates; both the insides on the lower edges of the inner side plate and the outer side plate are connected with bottom corner angles; the bottom corner angles on both sides are connected with the bottom plate through bolts; the bottom plate is connected with the front side plate through bolts; the inner side plate and the outer side plate take the shape of ladders; the upper vertical edges and the lower vertical edges of the inner side plate and the outer side plate are respectively and fixedly connected with the section end angle irons; both an inner vertical edge and an outer vertical edge of each step are fixed with an inner facade long angle iron and an outer facade long angle iron; and a horizontal bottom-holder angle iron is connected between the lower end of the inner facade long angle iron and the lower end of the outer facade long angle iron through bolts and is positioned under the bottom plate. The reinforced concrete caracol mould type moulding board solves the technical problems of large construction wood consumption, large consolidation difficulty and high construction cost of a reinforced concrete independent caracol moulding mould.

Description

(1) Technical field [0001] The invention relates to a formwork for cast-in-place concrete building construction and a construction method thereof, in particular to a formwork for a cast-in-place reinforced concrete spiral staircase and a construction method thereof. (2) Background technology [0002] Reinforced concrete independent spiral staircase has a large height, unique shape, complex force, and difficulty in supporting formwork. The installation of its formwork has always been a difficult problem in building construction. The known reinforced concrete independent spiral staircase formwork is assembled on-site with wooden formwork, and the formwork support consumes a large amount of wood that can only be used once, and also needs to be reinforced, and the reinforcement requires the use of a large amount of scaffolding pipes and labor, which not only wastes Wood, and because the existing formwork structure is complex, it will increase the difficulty of reinforcement, whi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a reinforced concrete spiral ladder formwork and its construction method, to solve the technical problems of the existing reinforced concrete independent spiral ladder formwork construction wood consumption is large, the reinforcement is difficult, the construction speed is slow, and the construction cost is high

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