Steel bar truss sandwich prefabricated floor slab

Abstract

The invention discloses a steel bar truss sandwich prefabricated floor slab, which consists of a layered structure sandwich plate formed by a lower hard material layer, a cement polyphenyl sandwich layer and an upper hard material layer in laminated arrangement from bottom to top; steel wire net pieces are flatly laid in the lower hard material layer and the upper hard material layer; a triangular steel bar truss is covered in the cement polyphenyl sandwich layer; mutually matched tenons and grooves are arranged on the left side surface and the right side surface of the cement polyphenyl sandwich layer; the triangular steel bar truss is a truss unit formed by installing one upper main bar and two lower main bars in the triangular vertex position and connecting with the truss units formed by the upper and lower main bars by two groups of inclined bars extending in the longitudinal direction in a wave shape; the lower main bars are attached and placed onto the upper surface of the lower hard material layer; the upper main bar is embedded in a combination seam position between the cement polyphenyl sandwich layer and the upper hard material layer. The steel bar truss sandwich prefabricated floor slab has the advantages that the self weight is light; the cost is low; the positioning is easy; the installation efficiency is high; the environment is protected; the cost is reduced; the connection is reliable; the anti-seismic property is high; the sound isolation and heat insulation effects are achieved; the integral appearance is attractive, and the like.

Description

technical field [0001] The invention relates to a prefabricated floor slab in the field of construction engineering, more specifically, a steel truss sandwich prefabricated floor slab suitable for multi-layer or high-rise steel structure engineering, and can also be used as an inner partition, an outer wall panel, and a slab span It is used for short-span load-bearing slabs of about 3.0 meters or long-span non-load-bearing roof slabs. Background technique [0002] At present, the floor slabs in construction projects are roughly divided into two categories - prefabricated floor slabs and cast-in-place floor slabs. But the traditional two kinds of floor slabs are slowly exposing their own shortcomings and deficiencies in the process of use. [0003] Over the years, there have been no major changes and improvements in the technology of prefabricated floor slabs, and basically the concrete floor slabs with hollow holes are still the main ones. The main disadvantages of this ki...

AI Technical Summary

Problems solved by technology

The main disadvantages of this kind of concrete floor slab are: the slab is heavy, heavy, poor earthquake resistance, no sound insulation, no heat preservation, multiple hoisting and transshipment are required, and manual installation is difficult (a single slab is generally more than 350 kg, and it is inconvenient to fine-tune the position. move), and due to complete independence and lack of reliable connection between adjacent floors, board seams are prone to appear after assembly, which affects the appearance and poor integrity

The disadvantage is that manual removal of thin galvanized steel sheets requires a certain amount of manpower, and most of the removed galvanized steel sheets are seriously deformed, so they can only be processed as waste products, which also causes a new waste

[0007] Simply comparing the weight of the structure, whether it is a floor slab or a wall panel, under the premise of the same width and thickness, most of the cast-in-place panels weigh more than prefabricated panels (for example, the thickness of the most common office buildings and residential cast-in-place panels is 10 cm) , the self-weight is 240 kg per square meter, while ordinary prefabricated slabs are generally 170-180 kg / square meter), so there is no advantage in reducing the structural weight of the cast-in-place slab, and there is no way to reduce the structural weight in the current construction process of the cast-in-place slab Feasible method

Images