Fabricated composite wallboard and overhanging composite roof self-tapping screw aggregate connecting structure and manufacturing method of fabricated composite wallboard and overhanging composite roof self-tapping screw aggregate connecting structure

Abstract

The invention discloses an assembly type composite wallboard and overhanging composite roof self-tapping screw aggregate connecting structure and a construction method, and belongs to the technical field of assembly type concrete building structure engineering. The self-tapping screw block is an inner and outer leaf single-row reinforcing mesh concrete thin plate of a composite wall plate with a force transmission steel plate, a cantilever composite roof with an L-shaped force transmission and connection steel plate, and a built-in steel structure concrete thin wall plate block with the thickness of the external contour concrete thin plate of a force transmission steel plate area connected through self-tapping screws; high-performance mortar is laid between the joints of the overhanging composite roof and the composite wallboards, so that the integrity of the joints of the roof and the wallboards is improved; the connecting structure with concentrated force transmission of the self-tapping screw set blocks and continuous force transmission of the post-pouring strips and cooperative stress bears earthquake shearing force in the plane of the wall body and the roof. The method has the technical advantages of being good in connection shear resistance and durability, the roof and the heat preservation plates at the joints of the roof and the wallboards are continuous, the joints are filled with polystyrene foam, the thermal performance is good, and the method is suitable for construction of ultra-low-energy-consumption houses.

Description

technical field [0001] The invention relates to a self-tapping nail aggregate block connection structure and method for an assembled composite wall panel and an overhanging composite roof, and belongs to the technical field of assembled concrete building structure engineering. Background technique [0002] The technology research and development of ultra-low energy consumption houses has drawn great attention from the engineering community at home and abroad. However, at present, the construction technology of low-storey and ultra-low energy consumption houses in villages and towns, especially the prefabricated construction technology, is very lacking. The technical bottleneck problems existing in the prior art are: (1) The building (house) cover of the traditional prefabricated concrete shear wall structure mostly adopts the laminated floor cover, which has a large amount of cast-in-place, a long construction period, and poor thermal insulation performance. Cold bridges ar...

AI Technical Summary

Problems solved by technology

However, at present, the construction technology of low-storey ultra-low energy consumption houses in villages and towns, especially the prefabricated construction technology is very lacking

The technical bottleneck problems existing in the prior art are: (1) The floor (house) cover of the traditional prefabricated concrete shear wall structure mostly adopts a laminated floor cover, which has a large amount of cast-in-place, a long construction period, and poor thermal insulation performance. It is easy to form cold bridges at the joints between the cover and the wall and the floor slabs, which is difficult to apply to the construction of ultra-low energy consumption houses

At the same time, the joints of the floor are affected by the ambient temperature and the freeze-thaw cycle, so it is difficult to guarantee the waterproof performance; (2) The traditional precast concrete shear wall and the building (roof) have thick steel bars and large spacing, and the cracking of the wall and floor slabs It is relatively common and has a great impact on the waterproof and thermal insulation performance of buildings; (3) The traditional shear wall steel plate and roof bolt connection technology is not suitable for single-row reinforced mesh concrete thin-slab sandwich polystyrene board wall panels and composite roofs. For the assembly of the cover, because the polystyrene board is sandwiched between the inner and outer leaf wall boards and the thermal bridge problem is considered, the polystyrene board is not allowed to be drilled through bolts, so it is difficult to separate the composite wall board concrete thin wall board and the composite wall board with the traditional steel plate bolt connection technology. Roof concrete sheet assembly; (4) The price of self-tapping nails is much lower than that of bolts. The connection between cold-formed thin-walled steel of light steel keel structure is often connected by self-tapping nails, and self-tapping nails penetrate successively. Two light steel keels, the force transmission between the light steel keels is achieved through the engagement with the self-tapping nails, and there is no extrusion friction; Assembly, which belongs to the assembly of reinforced concrete wall panels and composite roofs, requires friction and occlusal force at the same time. It is obvious that the current technology of directly connecting light steel keels with self-tapping screws and the assembly of composite wall panels and composite roofs and their force transmission requirements There are significant differences; (5) Traditional prefabricated reinforced concrete roof slabs are mostly slabs, and the roof slabs are assembled with concrete beams or shear walls at the supporting end through post-casting belts for cast-in-place assembly. The slope structure needs to be carried out after the roof construction is completed, the construction period is long, the cost is high, and the quality of the project is difficult to guarantee

Images