Prestress assembly type bamboo floor system

Abstract

The invention discloses a prestress assembly type bamboo floor system which comprises at least one span of plywood, the plywood is composed of a plurality of plywood blocks with rectangular sections, the plywood blocks are arranged side by side in the width direction and are the same in size, a pair of long edges of each plywood block is supported on a short support, and the other pair of short edges of each plywood block is supported by a high support wall. Rib penetrating holes are formed in the plywood blocks in the width direction, the positions and the shapes of the holes are matched with the shapes of the prestressed ribs, holes are also formed in the hole forming positions of the plywood blocks at the two ends and in a high support wall body, the prestressed ribs sequentially penetrate through all the holes and are anchored on an anchoring base plate on the outer side of a support of the high support wall body through nuts, and finally a stable whole is formed. The plywood blocks are connected and anchored through the prestressed tendons, the assembly process is simplified, the structural stability, bearing capacity and integrity are improved, and reliability and safety are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of prestressed structures, and in particular relates to a prestressed assembled bamboo-wood floor. Background Art

[0002] Prefabricated structure is a structural system formed by assembling and connecting prefabricated components. It is one of the important directions of the development of building structures in my country. This building system optimizes the construction process, reduces on-site construction costs, improves production efficiency and ensures project quality, which complies with the principle of sustainable development.

[0003] With the improvement of global environmental awareness, the research and development and application of low-carbon materials have become the development trend of the construction industry. Glued materials, including glued bamboo and glued wood, have become ideal green building materials due to their excellent mechanical properties, renewability and low carbon characteristics. Compared with natural wood and bamboo, plywood has outstanding performance in strength and durability. However, plywood is an anisotropic material with a low elastic modulus in the transverse direction and is prone to brittle failure. Therefore, when used as a floor slab, the span is limited. Adjacent plywood panels are usually formed into a whole by overlapping or nailing. This connection method is cumbersome to operate, which limits its application in large-span high-rise buildings. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a prestressed assembled bamboo-wood floor, which can fully utilize the mechanical properties of plywood and improve the bearing capacity of components, and facilitate the rapid on-site assembly of multiple plywood panels, while reducing material consumption and carbon emissions, thus meeting the sustainable development requirements of green buildings.

[0005] To achieve the above object, the technical solution of the present invention is as follows: A prestressed assembled bamboo and wood floor comprises at least one span of plywood, wherein the plywood is composed of a plurality of plywood blocks of the same size and having rectangular cross-sections arranged side by side in the width direction, a pair of opposite sides of the plywood are placed on a pair of shorter supports, and higher support walls are arranged on both sides of the other pair of sides, the plywood has reinforcement holes in the body along the width direction, and the support walls also have connecting holes at the positions corresponding to the openings of the plywood at both ends, prestressed tendons pass through the connecting holes and the reinforcement holes to connect the plywood and the higher support wall into a whole, and the two ends of the prestressed tendons are anchored to the anchor pads on the outside of the support wall through nuts.

[0006] Furthermore, the plywood block is made of glued bamboo or wood, or reconstructed bamboo or wood.

[0007] Furthermore, the number of glued layers of the plywood block is an odd number, and from the top surface to the bottom surface, the odd numbered layers are in the same direction as the grain, and the even numbered layers are in the transverse direction as the grain.

[0008] Furthermore, the material of the prestressed tendons may be steel or FRP.

[0009] Furthermore, the plywood is divided into a single-span or multi-span structure. For multi-span plywood, the number of corresponding supporting walls is one more than the number of plywood.

[0010] Furthermore, the prestressed tendons may be straight prestressed tendons or curved prestressed tendons.

[0011] Furthermore, the position and shape of the holes for passing the reinforcement on the plywood match the shape of the prestressed reinforcement: for straight prestressed reinforcement, the holes are opened horizontally in the plywood and the positions of the holes are consistent; for curved prestressed reinforcement, the holes can be set horizontally and the positions are coordinated with the eccentricity of the curved prestressed reinforcement, or curved holes can be opened in an oblique or curved manner according to the actual shape of the curved reinforcement.

[0012] Furthermore, the size of the nut should match the prestressed tendon, and the material can be carbon steel or stainless steel, with a strength grade of 6.6 or above.

[0013] Furthermore, the method for installing the prestressed tendons and anchors and the method for applying prestress are as follows: the prestressed tendons are tensioned by a jack until the reading of the jack oil pressure gauge reaches the expected value. One end of the prestressed tendons is inserted from the connection hole on the outside of the support wall, then passes through the through-reinforcement hole in the plywood, and finally passes out from the connection hole on the outside of the support wall at the other end. An anchoring pad is installed on the outside of the support wall, and the two ends of the prestressed tendons are screwed and fixed to the anchoring pad by nuts, and the nuts are fixed.

[0014] The beneficial effects of the present invention are: The present invention provides an assembled structure that utilizes prestressed tendons to connect and anchor multiple rectangular cross-section plywood panels. Different from the traditional method of fixing adjacent plywood panels by nails and overlapping them, the present invention uses prestressed tendons to effectively avoid the complex nailing problem of special-shaped plywood panels, thereby simplifying the assembly construction process. By applying appropriate prestress on the prestressed tendons, it can be ensured that the plywood forms a stable overall structure after the prestress is applied. This design not only optimizes the assembly process, but also enhances the integrity of the structure, ensuring reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a single-span structural system of the present invention; Figure 2 It is a schematic diagram of the single-span plywood slotting and prestressed tendon hole penetration of the present invention; Figure 3 It is a schematic diagram of the support and boundary of a single-span plywood of the present invention; Figure 4 It is a schematic diagram of the multi-span structural system of the present invention; Figure 5 This is a schematic diagram of plywood grooving and prestressed tendon penetration when the present invention is applied to a multi-span plywood system and uses curved prestressed tendons.

[0016] Figure 6 It is a schematic diagram of the support and boundary of the multi-span plywood of the present invention; Figure 7 It is a schematic diagram of the anchoring nodes at both ends of the plywood of the present invention.

[0017] List of Figure Symbols: 1. Plywood panels, 2, 3, 13, 14, supports, 4, 5, 15, support walls, 6, holes for reinforcing bars, 7, prestressed bars, 8, 9, anchor pads, 10, 11, nuts, 12, connection holes. DETAILED DESCRIPTION

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Example

[0019] like Figure 1 , 2 , 3, 7 The prestressed assembled bamboo and wood floor described in this example is a single-span plywood, comprising a plurality of plywood panels 1, one pair of opposite sides of the plywood is set on the lower support 2, 3, and the other pair of opposite sides is adjacent to the higher support wall 4, 5. A through-reinforcement hole 6 is provided along the width direction of the plywood 1, which is adapted to the curved path of the prestressed tendon 7; the support wall 4, 5 is also provided with corresponding holes (connection holes 12), and anchoring steel plates 8, 9 are arranged on the outside. The prestressed tendon 7 passes through the tendon hole 6 and the connection hole 12 in sequence, connecting the plywood panel 1 with the support wall 4, 5, and anchoring through nuts 10, 11.

[0020] The installation method of this example is as follows: the prestressed tendons 7 are tensioned on the jack until the oil pressure gauge reading reaches the expected value, and several plywood panels 1 are opened with tendon holes 6 according to the distribution shape and position of the prestressed tendons 7. The prestressed tendons 7 pass through the holes of the plywood panels 1 and the supporting walls 4 and 5 in sequence, and the two ends pass through the connecting holes 12 outside the supporting walls 4 and 5 and connect with the holes of the anchor pads 8 and 9. Tighten the nuts 10 and 11 at both ends of the prestressed tendons 7 to fix them. Example

[0021] like Figure 4 , 5, 6, 7 The multi-span prestressed assembled bamboo and wood floor of this example is a two-span plywood, each span of plywood includes a number of plywood blocks 1, a pair of opposite sides of the plywood are placed on the lower supports 2, 3 and 13, 14, and the other pair of opposite sides are adjacent to the higher support walls 4, 5, 15; reinforcement holes 6 are opened along the width direction of the plywood block 1, which are adapted to the curved path of the curved prestressed tendons 7; the support walls 4, 5, 15 are also provided with corresponding holes (connecting holes 12), and anchoring steel plates 8, 9 are arranged on the outside of the support walls 4, 15, and the prestressed tendons 7 pass through all the reinforcement holes 6 and the connecting holes 12 in sequence to connect the plywood block 1 and the support walls 4, 5, 15 together, and anchor them through nuts 10, 11.

[0022] The installation method of this example is as follows: the prestressed tendons 7 are tensioned on the jack until the oil pressure gauge reading reaches the expected value, and several plywood panels 1 are opened with tendon holes 6 according to the distribution shape and position of the prestressed tendons 7. The prestressed tendons 7 pass through the holes of the plywood panels 1 and the supporting walls 4, 5, 15 in sequence, and the two ends are passed through the connecting holes 12 on the outside of the supporting walls 4, 15, and connected with the holes of the anchor pads 8, 9; tighten the nuts 10, 11 at both ends of the prestressed tendons 7 to fix them.

[0023] It should be noted that the above content only illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. A prestressed assembled bamboo-wood floor, characterized in that: The invention comprises at least one span of plywood, wherein the plywood is composed of a plurality of plywood panels (1) of rectangular cross-section and of the same size arranged side by side in the width direction, wherein a pair of opposite sides of each plywood panel (1) is supported on supports (2) and (3), and the other pair of opposite sides is supported by support walls (4) and (5), wherein the plywood panel (1) is provided with reinforcement holes (6) in the width direction, and corresponding connection holes (16) are also provided in the support walls (4) and (5) at the positions of the holes of the plywood panels (1) at both ends, and the prestressed tendons (7) pass through the connection holes (16) and the reinforcement holes (6), and are anchored to the anchor pads (8) and (9) on the outside of the wall supports (4) and (5) through nuts (10) and (11), thereby finally forming a stable whole.

2. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The plywood is glued bamboo or wood, or reconstructed bamboo or wood.

3. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The number of glued layers of the plywood block (1) is an odd number, and from the top surface to the bottom surface, the odd numbered layers are in the same direction as the grain, and the even numbered layers are in the transverse direction as the grain.

4. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The material of the prestressed tendons (7) is steel or FRP.

5. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The plywood is divided into a single-span or multi-span structure. For multi-span plywood, the number of corresponding supporting walls is one more than the number of plywood.

6. The prestressed assembled bamboo-wood floor according to claim 5 is characterized in that: The prestressed tendons (7) are straight prestressed tendons or curved prestressed tendons.

7. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The position and shape of the opening (6) on the plywood (1) match the shape of the prestressed tendons (7). For the straight prestressed tendons (7), the plywood (1) has the opening (6) horizontally and the opening position is consistent; for the curved prestressed tendons (7), the opening (6) is arranged horizontally and the position is coordinated with the eccentricity of the curved prestressed tendons (7), or the curved hole (6) is opened in an oblique or curved manner according to the actual shape of the curved tendons (7).

8. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The nuts (10) and (11) have dimensions that match those of the prestressed tendons (7), and are made of carbon steel or stainless steel with a strength grade of 6.6 or above.

9. The prestressed assembled bamboo-wood floor according to claim 1 is characterized in that: The prestressed tendons (7) are tensioned by a jack until the reading of the jack oil pressure gauge reaches the expected value. One end of the prestressed tendons is inserted from the connection hole on the outside of the support wall (4), then passes through the tendon hole (6) in the plywood, and finally passes out from the connection hole on the outside of the support wall (4) at the other end. Anchor pads (8) (9) are installed on the outside of the support wall (4), and the two ends of the prestressed tendons (7) are screwed and fixed to the anchor pads by nuts (10), and the nuts are fixed.

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