A hollow bamboo strip includes mao bamboo sheets formed by splitting bamboo; the two sides of a mao bamboo sheet are cut with matching surfaces, thereby making a finished bamboo sheet with a trapezoidal cross section, the matching surfaces of a plurality of finished bamboo sheets are successively spliced or finger jointed into a hollow bamboo strip with a hollow structure. A hollow bamboo board is spliced by fitting several hollow bamboo strips at side surfaces. A method for manufacturing a hollow bamboo board includes: splitting the bamboo into several mao bamboo sheets in its peripheral direction; cutting a mao bamboo sheet into a finished bamboo sheet with a trapezoidal cross section; carbonizing the finished bamboo sheet; forming the finished bamboo sheets subjected to carbonization into a hollow bamboo strip; fitting corresponding side surfaces of several hollow bamboo strips to be spliced into a hollow bamboo board.

The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180 C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm.sup.3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.

High-frequency hot-pressing continuous automatic production lines for dimensional bamboo timbers, and production methods thereof are provided. The production line can include a clip-up store and feeding mechanism fixed with one end of a three-roller type gluing system. An other end of the three-roller type gluing system is fixed with one end of a system for loading, layer up and stacking non-glued bamboo sheets. The outer side edge of the system for loading, layer up and stacking non-glued bamboo sheets is connected to a front inner end of a plate stack conveying system. A high-frequency press and high-frequency generator system is located at a rear inner end of the system for loading, layer up and stacking non-glued bamboo sheets.

Disclosed is a splicing method for seamless butted laminated bamboo lumber (LBL), falling within the technical field of LBL. According to the present disclosure, positions needing to be spliced on end faces of bamboo materials are applied with glue adhesive, and butted by tenon-mortise structures, the tenon-mortise structure being at least one of a semicircle, a semi-ellipse, a V-shape and a U-shape. An included angle between a plane at a top of the V-shape and the end face of the bamboo material is greater than 14 when a single V-shape is adopted. According to the present disclosure, by butting the bamboo materials, products with any length, width and thickness can be produced, and the produced products are seamless, which improves the strength and stability of the products.

The invention relates to a bamboo blank, particularly to produce load-bearing structural elements, characterized in that the bamboo blank comprises a plurality of bamboo lamellae arranged parallel to each other and bonded together by an adhesive, wherein the material for the bamboo lamellae originates from a giant bamboo species, the bamboo lamellae are pressed and bonded together by a pressure of 0.05-1.5 N/mm.sup.2, and the bamboo lamellae have a thickness of at least 5 mm. Furthermore, the invention relates to a bamboo rod, a bamboo layer, a laminated timber element, a sandwich element, and a ceiling or wall element. The invention additionally relates to a method for producing a claimed bamboo blank, bamboo rod, bamboo layer, laminated timber beam, cross-laminated timber element, sandwich element, ceiling element, and/or wall element, combination beam, T-beam, I-beam, and ceiling elements with T-beams and/or I-beams.

A side pressure plate and a preparation method, comprising a first layer plate, a second layer plate and a third layer plate, all of which comprise a plurality of square plates, the square plates comprising a cutting surface and a long side surface, the cutting surfaces of the plurality of square plates being bonded to each other to form the second layer plate, and the long side surfaces of the plurality of square plates being bonded to each other to form the first layer plate and the third layer plate, the three layers are bonded and pressed together to form the side pressure plate. Cutting a number of hollow cylindrical bamboo tubes into multiple bamboo strips paste side pressure to form the first layer of plate, the second layer of plate and the third layer of plate, and finally the three layers of plate bonding.