Detachable circulation high-altitude large cantilever formwork and construction method thereof

Abstract

The invention provides a detachable circulation high-altitude large cantilever formwork. The detachable circulation high-altitude large cantilever formwork comprises a shear wall, wherein a pluralityof cantilever main beams are arranged on the outer side of the shear wall, a vertical first end plate is welded and fixed to the inner end of each cantilever main beam, and the first end plates are fixed on the shear wall through bolt assemblies; the lower side of each cantilever main beam is provided with a diagonal bracing beam and an oblique connecting beam, a first rib plate is welded and fixed to the lower end face, close to the outer end, of each cantilever main beam, a first connecting plate obliquely arranged is arranged on each first rib plate in an bend mode, the first connecting plates are fixedly connected with the lower ends of the diagonal bracing beams through the bolt assemblies, vertical second end plates are welded to the lower ends of the diagonal bracing beams, and thesecond end plates are fixed to the shear wall through the bolt assemblies. The assembly type framework is adopted, each assembly type framework can be assembled on the ground through the bolt assemblies, an assembled cantilever formwork can be installed on the shear wall of a high-rise in a hoisting mode, and installation of the cantilever formwork can be conveniently achieved; and the subsequentcantilever formwork can be integrally disassembled, and can be reinstalled in other high-rise buildings in a hoisting mode.

Description

Technical field: [0001] The present invention relates to the technical field of building cantilevered formwork, and more specifically relates to a detachable turnover high-altitude large cantilevered formwork and a construction method. Background technique: [0002] At present, in high-rise buildings in our country, it is often necessary to build cantilevered formwork in high altitude; the structure of traditional cantilevered formwork is shown in the attached drawing figure 1 As shown, the main component of the cantilevered formwork is the cantilever beam 2', which adopts section steel. Before construction, it is necessary to reserve section steel holes 11' in the shear wall. During construction, pass one end of the cantilever beam 2' through The section steel hole 11' of the shear wall 1 is anchored on the concrete floor 3', and the other end of the cantilever beam 2' extends out of the shear wall 1, that is, the cantilever beam 2' is divided into two sections, one section...

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Problems solved by technology

[0002] At present, in high-rise buildings in our country, it is often necessary to build cantilevered formwork in high altitude; the structure of traditional cantilevered formwork is shown in the attached drawing figure 1 As shown, the main component of the cantilevered formwork is the cantilever beam 2', which adopts section steel. Before construction, it is necessary to reserve section steel holes 11' in the shear wall. During construction, pass one end of the cantilever beam 2' through The section steel hole 11' of the shear wall 1 is anchored on the concrete floor 3', and the other end of the cantilever beam 2' extends out of the shear wall 1, that is, the cantilever beam 2' is divided into two sections, one section is installed in the building The inner anchoring section 22', and the other section is the cantilever section 21' protruding from the building; therefore, the length required for the entire cantilever beam 2' is 2.25 times the actual cantilever length, resulting in a great waste of steel

However, the steel hole 11' reserved on the shear wall 1 can only be closed after the supporting frame is removed. Due to the large size of the hole, it is difficult to effectively guarantee the quality of the closed construction, and it is very easy to generate cracks in the steel hole, resulting in leakage of the outer wall. water;

[0003] Moreover, the cantilevered formwork construction method of the traditional structure is to transport all parts to the upper floors of the building, and weld and assemble them in the sky. The construction is not only difficult, but also poor in safety; Cannot be disassembled as a whole, and disassembly is inconvenient. The strength of each part of the cantilever formwork will be damaged during the disassembly process, and the parts of the cantilever formwork cannot be reused for the next construction of the cantilever formwork

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