Truss type formwork support for suspended cast-in-place plate and using method thereof

Abstract

The invention relates to a truss type formwork support for a suspended cast-in-place plate and a using method thereof. The truss type formwork support is mainly suitable for a suspended cast-in-placefloor system in steel structure engineering, structurally comprises a truss chord member and a quick dismounting connector, and is characterized in that the truss chord member comprises a horizontal fixed upper chord member, a bent web and an obliquely upward fixed lower chord member, the quick dismounting connector comprises a vertical plate and a connecting plate, the connecting plate is fixed to the vertical center line of the vertical plate, and the upper chord member and the lower chord member of the truss chord member are fixed to the quick dismounting connector. During installation, theformwork support is pre-screwed on a structural steel beam through bolts, the formwork support and the structural steel beam are hoisted to a corresponding position of the steel column together, fineadjustment is carried out, and the bolts are tightened. During dismounting, the bolts are unscrewed and then screwed off after wood lumps, wood formworks and the like above are detached, and finallythe formwork support is taken down through a lifting hook. The formwork support has the advantages of being low in disassembly and assembly difficulty, high in construction safety and the like. Compared with a traditional full scaffold, the construction progress is accelerated, the steel consumption is reduced, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a truss formwork support for cantilevered cast-in-place slabs and a method for using the same, which is mainly suitable for cantilevered cast-in-place slab systems in steel structure engineering. Background technique [0002] At present, the commonly used formwork system for floor slabs mainly uses full-scale scaffolding composed of steel pipes and fasteners as a support system, which is used to bear the weight of cast-in-place slabs, formwork, etc. and construction loads during the construction process. The floor slab provides support for the upper floor slab construction, and in the steel structure project, the main structural components such as beams and columns adopt the construction technology of factory prefabrication and on-site assembly, but the floor slab structure still needs to be poured on site, and hardening can be completed after a certain p...

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used formwork system for floor slabs mainly uses full-scale scaffolding composed of steel pipes and fasteners as a support system, which is used to bear the weight of cast-in-place slabs, formwork, etc. and construction loads during the construction process. The floor slab provides support for the upper floor slab construction, and in the steel structure project, the main structural components such as beams and columns adopt the construction technology of factory prefabrication and on-site assembly, but the floor slab structure still needs to be poured on site, and hardening can be completed after a certain period of time, and It is necessary to install the full house scaffolding after the hardening of the lower floor is completed, which greatly affects the construction progress and greatly weakens the advantage of fast construction of steel structure engineering. In addition, this kind of full house scaffolding has a large amount of materials. , slow build-up and disassembly speed, inflexible use and other disadvantages

[0003] In view of some problems existing in the current formwork structure, the application publication date is November 6, 2018, and a Chinese patent with the application publication number CN108756220A discloses a cast-in-place concrete rib beam floor formwork support and its construction method. The formwork support includes a main beam support and a secondary beam support, and a full-length main beam support is arranged directly under the criss-cross main beams, and a full-length secondary beam support is provided under the secondary beams in any one of the vertical and horizontal directions , giving priority to the erection of the formwork supports of the main beam and the secondary beam, which solves the problem of the modulus of the socket-type buckle-type steel pipe support caused by the formwork in the prior art that needs to be fully erected, which has to be mixed and matched, resulting in unclear force and load bearing issues with reduced force and overall stability

However, this scheme still has not solved the main problems of limited construction speed and large amount of materials, and cannot fully utilize the advantages of fast construction speed of steel structures.

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