Assembly type L-shaped composite wallboard full-length force transmission steel plate self-tapping screw block connecting structure and manufacturing method

Abstract

The invention discloses an assembly type L-shaped composite wallboard full-length force transmission steel plate self-tapping screw block connecting structure and a construction method. The structure is used for assembly of an L-shaped upper composite wallboard and an L-shaped lower composite wallboard which are used for bearing a small earthquake effect in a multi-story building. The invention discloses a full-length force transmission steel plate self-tapping screw block which is a steel-concrete combined plate block with a built-in steel structure, wherein the steel-concrete combined plate block is formed by connecting upper and lower full-length force transmission steel plates through self-tapping screws and linear and L-shaped connecting steel plates, and the thickness of the plate section external contour concrete thin plates is larger than that of the plate section external contour concrete thin plates; a full-length force transmission steel plate self-tapping screw block connecting structure is composed of a self-tapping screw block and a force transmission steel plate section without the self-tapping screw block. The self-tapping screw set block resists bidirectional shearing force, bending moment and torque of an earthquake and can transmit a vertical load; the butt-joint steel plate section is mainly used for transmitting a vertical load; the L-shaped constructional columns are concrete embedded columns located at the inner corners of the wallboards. The composite wallboard has the remarkable technical advantages that the upper and lower L-shaped composite wallboards are assembled and constructed quickly, the connecting performance, the durability and the thermal performance are good, and wet operation is avoided.

Description

technical field [0001] The invention relates to an assembled L-shaped composite wall panel through-length force-transmitting steel plate self-tapping screw aggregate block connection structure and a method thereof, and belongs to the technical field of assembled concrete construction 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. [0003] Bottleneck problems of the prior art: (1) The assembly of the L-shaped wall of the prefabricated composite wall structure at the corner of the building is complex, and the L-shaped wall at the corner is subjected to bending, shearing and torsional earthquakes, and it is necessary to set the corner ...

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

[0003]The bottleneck problem of the existing technology: (1) The prefabricated composite wall structure is located at the corner of the building. The L-shaped wall is complex to assemble, and the L-shaped wall at the corner is bent , shear, and torsional earthquakes, it is necessary to set up corner structural columns, and the one-shape composite wall assembly method cannot solve the technical problems caused by the geometric shape and force requirements of L composite wall panels

(2) The traditional shear wall reinforcement structure has large distribution spacing and large steel bar diameter. If the steel bar lap anchoring technology is used, the section height of the post-cast belt will be large and the cast-in-place volume will be large. The height of the post-cast concrete section required for the assembly of sandwich polystyrene board wall panels should not exceed the requirement of 180mm; (3) The traditional shear wall sleeve connection technology is not suitable for the single-row reinforced mesh concrete thin-slab sandwich polystyrene core of the inner and outer leaves. Assembling the board wall panels, because the thickness of the inner and outer leaf thin wall panels is only 40mm~60mm; (4) The traditional shear wall steel plate bolt connection technology is not suitable for the inner and outer leaf single-row reinforced mesh concrete thin-slab sandwich polystyrene board wall panels Assembling, because the polystyrene board is sandwiched between the inner and outer leaf wall boards and the polystyrene board is not allowed to drill holes and bolts in consideration of the thermal bridge problem, it is difficult to assemble the inner and outer leaf concrete thin wall boards separately by using the traditional steel plate bolt connection technology; (5) The price of tapping nails is much lower than that of bolts. The connection between the thin-walled light steel keels of the thin-walled light steel keel structure is connected by self-tapping nails. The force transmission between them is realized through the occlusion with self-tapping nails, and there is no extrusion friction; however, the assembly of single-row reinforced mesh concrete thin-slab sandwich polystyrene board wall panels on the inner and outer leaves belongs to the assembly of reinforced concrete wall panels, and friction is required at the same time It is obvious that the current technology of directly connecting light steel keels with self-tapping screws is difficult to meet the assembly and force transmission requirements of the inner and outer leaf concrete thin wall panels of composite wall panels

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