Orthogonal laminated wood-concrete composite floor and reinforcing method

Abstract

The invention discloses an orthogonal laminated wood-concrete composite floor. The orthogonal laminated wood-concrete composite floor comprises a concrete plate, a CLT plate, a plurality of pneumatic strip nails and a plurality of wood cushion blocks; the plurality of wood cushion blocks are arranged on the first surface of the CLT plate, the plurality of pneumatic strip nails penetrate through the wood cushion blocks from the upper surfaces of the wood cushion blocks and are inserted into the CLT plate, and an included angle exists between the insertion direction of the pneumatic strip nails and the vertical direction; and the concrete plate is poured on the first surface of the CLT plate, the wood cushion blocks and the pneumatic strip nails. The pneumatic strip nails are driven into the wood cushion blocks and the CLT plate so that the interlayer shearing capacity of concrete and the CLT plate can be remarkably improved, the interlayer shearing capacity of all layers of the CLT plate and the rolling shearing capacity of the CLT plate are improved, the application range of the orthogonal laminated wood-concrete composite floor is convenient to popularize and expand, and the development of a multi-story and high-rise wood structure is promoted; and meanwhile, according to the orthogonal laminated wood-concrete composite floor, the ultimate bearing capacity, the structural rigidity and the stability of the CLT-concrete composite floor can be effectively improved, and the ultimate bearing capacity of the CLT-concrete composite floor can be improved by about 60%.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a cross-glued wood-concrete composite floor slab and a reinforcement method. Background technique [0002] Cross-laminated timber (CLT) is a kind of cross-laminated timber with 3 to 9 layers of solid wood sawn timber or composite boards, pressed with structural adhesives. CLT can be widely used in walls, floors and roofs of civil buildings and commercial buildings, and plays a dual role of building enclosure and load-bearing in buildings. CLT components have stable dimensions, good fire resistance, good thermal insulation and sound insulation, environmental protection, simple construction, and good economic performance. The failure of CLT is often caused by the rolling shear failure and interlayer shear failure of the middle layer. The rolling shear and interlayer shear performance of the CLT middle layer are enhanced, and the rigidity, ultimate bearing cap...

AI Technical Summary

Problems solved by technology

Due to the existence of the shear connection between the CLT slab and the concrete slab, the ultimate bearing capacity of the existing CLT-concrete composite slab is not enough, and the stiffness and stability are poor. In order to make the CLT and concrete work together, it is necessary to strengthen the CLT slab and concrete. Shear connection between concrete

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