Prestressed bamboo plywood belongs to a new generation of bamboo plywood. It is completely different from the bamboo and bamboo plywood structure. It is glued by bamboo or bamboo string integration method, in order to improve the lateral stiffness and shear resistance, and the integration direction. Prestressing is applied and its structural characteristics are:
1. High strength, high rigidity and good wear resistance. The static bending strength of Phyllostachys pubescens reaches 152Mpa, the flexural modulus of elasticity reaches 12062Mpa, and the hardness is 72Mpa. According to the structural plate under its natural bearing state, it is unmatched by any artificial board.
2. The structure has high fatigue strength and can be reused frequently. In the bending working state, the shear stress is perpendicular to the cemented joint of the bamboo strip, avoiding the shear stress damage, and the shear stress of the bamboo and bamboo boards is consistent with the direction of the stacked seam of the bamboo, and the cemented joint is easily damaged under the shear stress. Peeling and cracking occur, and the number of uses is low;
3. The prestressed bamboo plywood can be sliced. The flatness and thickness difference of the plate are controlled within ±0.5mm of the national standard, while the bamboo and bamboo boards have a thickness difference of ±2mm, which is a kind of steel frame plywood that cannot be used. Achilles heel
4. The surface of the prestressed bamboo strip is smooth and easy to handle, and the cost is low.
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