Two-way composite floor slab with four sides without rib extending and free of formwork supporting and dismounting and construction method thereof

Abstract

The invention provides a two-way composite floor slab with four sides without rib extending and free of formwork supporting and dismounting and a construction method thereof. The two-way composite floor slab comprises at least two prefabricated slabs, a cast-in-place composite layer, prefabricated slab bottom stress steel bar nets, a plurality of truss steel bars, additional steel bar nets, steel formwork nets and abutted seams. The four sides of the prefabricated slabs are not provided with the ribs, the truss steel bars are vertically arranged in the prefabricated slabs and the cast-in-place composite layer in a penetrating mode, the abutted seams are located between every two adjacent prefabricated slabs, the steel formwork nets stretch across every two adjacent prefabricated slabs, each steel formwork net is provided with a net body and stiffening ribs protruding out of the net body, the stiffening ribs are embedded into gaps of the abutted seams, and the additional steel bar nets are transversely connected to the abutted seams and the steel formwork nets in an overlapped mode. According to the two-way composite floor slab, the four sides of the two-way composite floor slab are prevented from rib extending, meanwhile, the stress performance of the separated type seam parts and the two-way slabs is guaranteed, the structural safety is guaranteed, and the formwork supporting and dismounting procedures are simplified; and meanwhile, the problem of error coordination of actual production and construction installation of the separated type seams can be solved.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a two-way laminated floor slab with no ribs on four sides and free from support and form removal and a construction method thereof. Background technique [0002] At present, truss reinforced concrete laminated floors are widely used in prefabricated buildings, of which two-way laminated floors are still mainly connected by integral joints. Post-cast belts and ribs on the four sides of the precast panels lead to poor formwork versatility, complex production process, increased difficulty in product protection and transportation, troublesome positioning of post-cast belts during installation of precast panels, and post-cast belts require wide seams after installation. Formwork support and formwork removal take up labor, which is not conducive to controlling the increasing labor costs. It can be seen that although the two-way laminated floor slab with integ...

AI Technical Summary

Problems solved by technology

In addition, how to coordinate the errors of actual production, construction and installation, such as the floor slab spliced ​​with reserved pressure grooves on the side of the slab, the actual installation has the situation that the pressure grooves of the prefabricated slabs on both sides of the joint do not match, which affects the insertion of the connecting steel bars into the pressure grooves

When pouring laminated concrete after construction, if the separated joints are not sealed or formwork-supported, grout leakage will easily occur and the construction environment will be polluted. Second cleaning is required. If the joints are sealed or formwork is removed, It requires a certain amount of labor, which is not conducive to work efficiency assurance and cost control

Images