A cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure

Abstract

The invention discloses a cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure, comprising cross-laminated timber wallboards, a specially constructed energy-absorbing core layer, screws, connectors, and cross-laminated timber floor panels; the connectors comprise ribbed angle steels, grooved steel plates, and high-strength bolts connecting the angle steels and the steel plates; the ribbed angle steels and the grooved steel plates are embedded in rectangular friction plates; the specially constructed energy-absorbing core layer is located between the cross-laminated timber wallboards and the cross-laminated timber wallboards to form an energy-absorbing shear wall; the energy-absorbing shear wall connects the cross-laminated timber wallboards and the cross-laminated timber floor panels through connectors to form a shear wall structure. The invention uses angle steels, high-strength bolts, screws, and other reliable connections to enable the wall to effectively bear the effects of vertical and horizontal loads, thereby ensuring the integrity and force-bearing performance of the structural system, while fully utilizing the friction between the friction plates and the grooved steel plates to effectively resist out-of-plane loads such as wind pressure, thereby ensuring the effective transmission of loads; a specially constructed energy-absorbing core is arranged between the cross-laminated timber wallboards to absorb explosion energy and achieve an explosion-proof effect.

Description

Technical Field

[0001] The invention relates to the technical field of building structure engineering, and in particular to a cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure. Background Art

[0002] Due to its orthogonal assembly method, cross-laminated timber has good load-bearing capacity and in-plane and out-of-plane stiffness. With the development of processing technologies such as engineered wood products and the promotion of green and environmentally friendly prefabricated buildings, cross-laminated timber heavy wood structures are widely used in multi-story modern wood structures at home and abroad. However, wood is a low-density material and exhibits relatively brittle mechanical properties. Compared with reinforced concrete and steel structural components, the impact of explosion loads on wood structures is more significant. Therefore, it is an urgent problem to propose an explosion-proof energy-absorbing shear wall suitable for modern wood structure buildings.

[0003] At present, some sandwich panels are used for explosion-proof problems. After the surface panel contacts the explosion load, it is transferred to the "core" layer. The energy-absorbing core absorbs the explosion energy and mitigates the impact caused by the explosion, thereby reducing the displacement and deflection of the rear panel. However, the application and research of explosion loads and explosion-proof energy-absorbing shear walls are mainly concentrated in reinforced concrete and steel structures. There are relatively few research and applications on explosion-proof energy-absorbing shear walls in wooden structures. Summary of the invention

[0004] The purpose of the present invention is to provide an orthogonal glued timber sandwich explosion-proof energy-absorbing shear wall structure, which can fully exert the lateral force resistance performance of the orthogonal glued timber panels not only under the action of horizontal forces such as wind loads and earthquakes, but also effectively transfer the load to the floor slab by applying a certain pre-tightening force to the high-strength bolts to ensure the overall stress of the structural system, and can also absorb energy under the action of explosion impact loads to prevent brittle failure.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure: comprising a first cross-laminated timber wall panel, a second cross-laminated timber wall panel, a structural energy-absorbing core layer, a first screw, a second screw, a connecting piece, a cross-laminated timber floor panel, a third screw, a fourth screw, a fifth screw and a sixth screw;

[0007] The structural energy absorbing core layer is located between the first cross-laminated timber wallboard and the second cross-laminated timber wallboard, and the structural energy absorbing core layer, the first cross-laminated timber wallboard and the second cross-laminated timber wallboard form an energy absorbing shear wall;

[0008] The energy-absorbing shear wall structure connects the first cross-laminated timber wall panel and the cross-laminated timber floor panel through a connector, and connects the second cross-laminated timber wall panel and the cross-laminated timber floor panel through a connector. The energy-absorbing core layer, the connector, the first cross-laminated timber wall panel, the second cross-laminated timber wall panel and the cross-laminated timber floor panel form a shear wall structure.

[0009] The connecting member includes a first ribbed angle steel and a second ribbed angle steel, a first channel steel plate or a second channel steel plate, a first high-strength bolt connecting the first ribbed angle steel and the first channel steel plate or the second channel steel plate, and a second high-strength bolt connecting the second ribbed angle steel and the first channel steel plate or the second channel steel plate;

[0010] A first rectangular friction plate is embedded between the first ribbed angle steel and the first grooved steel plate, a first rectangular friction plate is embedded between the first ribbed angle steel and the second grooved steel plate, a second rectangular friction plate is embedded between the second ribbed angle steel and the first grooved steel plate, and a second rectangular friction plate is embedded between the second ribbed angle steel and the second grooved steel plate.

[0011] Furthermore, the structural energy absorbing core layer has a plurality of columns and rows of units, and circular nail holes are opened at the edge connections of the plurality of columns and rows of units. The first orthogonal glued timber wall panel is connected to the structural energy absorbing core layer through the first screw, and the second orthogonal glued timber wall panel is connected to the structural energy absorbing core layer through the second screw.

[0012] Furthermore, the energy absorbing core layer is constructed by obtaining a plurality of energy absorbing units by extrusion forging, and then connecting the ends of the energy absorbing units by welding.

[0013] Furthermore, the energy-absorbing core layer is symmetrically constructed, and the energy-absorbing unit is composed of an outer part and a middle part. The outer part adopts a double V-shaped structure, and the middle part adopts a nearly X-shaped structure.

[0014] Furthermore, the cross-laminated timber floor is provided with a plurality of rectangular holes for accommodating the first grooved steel plate and the second grooved steel plate, and the corners of the holes are rounded.

[0015] Furthermore, the first ribbed angle steel is fixed to the first orthogonal glued timber wall panel, the second ribbed angle steel is fixed to the second orthogonal glued timber wall panel, the first ribbed angle steel and the second ribbed angle steel are respectively provided with a plurality of conical holes, the first ribbed angle steel is fixed to the first orthogonal glued timber wall panel by the fifth screw, and the second ribbed angle steel is fixed to the second orthogonal glued timber wall panel by the sixth screw.

[0016] Furthermore, the long sides and short sides of the first groove-shaped steel plate and the second groove-shaped steel plate are provided with a plurality of tapered holes and are fixed to the orthogonal glued timber floor by the third screws and the fourth screws. The first groove-shaped steel plate is used at the side of the orthogonal glued timber floor, and the second groove-shaped steel plate is used at the middle of the orthogonal glued timber floor.

[0017] Furthermore, the first ribbed angle steel and the second ribbed angle steel are respectively provided with a first fixing bolt hole and a second fixing bolt hole at the center position, the first grooved steel plate or the second grooved steel plate is provided with a first friction oblong hole and a second friction oblong hole, and the first rectangular friction plate and the second rectangular friction plate are respectively provided with circular holes.

[0018] Furthermore, after the first high-strength bolt passes through the first fixing bolt hole, the circular hole of the first rectangular friction plate and the first friction oblong hole in sequence, the first ribbed angle steel is connected and fixed to the first grooved steel plate or the second grooved steel plate.

[0019] Furthermore, after the second high-strength bolt passes through the second fixing bolt hole, the circular hole of the second rectangular friction plate and the second friction oblong hole in sequence, the second ribbed angle steel is connected and fixed to the first grooved steel plate or the second grooved steel plate.

[0020] The beneficial technical effects of the present invention are at least as follows:

[0021] (1) Through reliable connections such as angle steel, high-strength bolts and screws, the wall can effectively bear vertical and horizontal loads, ensuring the integrity and stress performance of the structural system.

[0022] (2) Make full use of the friction between the friction plate and the grooved steel plate to effectively resist out-of-plane loads such as wind pressure and ensure effective transfer of loads.

[0023] (3) Long-hole prestressed high-strength bolt nodes are used to connect the orthogonal glued laminated timber walls and floor slabs. When an explosion load occurs outside or inside the building, the high-strength bolts will undergo frictional slip under the action of the explosion impact load, and the orthogonal glued laminated timber wall panels will undergo out-of-plane displacement, stimulating the shear wall core layer to achieve energy absorption, thereby avoiding the occurrence of brittle failure of the wood and improving the safety of the entire structure under the action of the explosion load.

[0024] (4) The cross-laminated timber wall panels, specially constructed energy-absorbing core and cross-laminated timber floor panels of this structure can all be prefabricated in the factory and then assembled on site, making the construction relatively convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art may make several improvements and modifications based on the following drawings without creative work, and such improvements and modifications shall also be deemed as within the scope of protection of the present invention.

[0026] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the orthogonal glued laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 Rear view of.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the energy-absorbing core layer in the internal structure of an embodiment of the present invention.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the energy-absorbing core layer component unit of the internal structure of an embodiment of the present invention.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the connector connecting the wall and the floor slab and its various components disassembled according to an embodiment of the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the grooved steel plate 603 of the connecting member connecting the wall and the floor slab according to an embodiment of the present invention.

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the grooved steel plate 608 of the connecting piece connecting the wall and the floor slab according to an embodiment of the present invention.

[0033] Figure 8 It is a schematic structural diagram of a cross-laminated timber floor according to an embodiment of the present invention.

[0034] In the figure, 1-cross-laminated timber wall panel, 2-cross-laminated timber wall panel, 3-specially constructed energy-absorbing core, 4-first screw, 5-second screw, 6-connector, 601-ribbed angle steel, 602-ribbed angle steel, 603-groove steel plate, 604-high-strength bolt, 605-high-strength bolt, 606-rectangular friction plate, 607-rectangular friction plate, 608-groove steel plate, 7-cross-laminated timber floor, 8-third screw, 9-fourth screw, 10-fifth screw, 11-sixth screw. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention will be further described clearly and completely below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0036] Example

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure of the embodiment of the present invention comprises a first cross-laminated timber wall panel 1 and a second cross-laminated timber wall panel 2, a structural energy-absorbing core 3 located between the first cross-laminated timber wall panel 1 and the second cross-laminated timber wall panel 2, the structural energy-absorbing core 3 is connected to the first cross-laminated timber wall panel 1 and the second cross-laminated timber wall panel 2 on both sides by a first screw 4 and a second screw 5 respectively to form an orthogonal glued timber sandwich explosion-proof energy-absorbing shear wall, and then the first cross-laminated timber wall panel 1 and the second cross-laminated timber wall panel 2 are respectively connected and fixed to the cross-laminated timber floor slab 7 by connecting members 6.

[0038] See also Figure 3 , Figure 4 The energy absorbing core 3 is composed of a number of energy absorbing units, each of which is composed of an outer part 301 and a middle part 302, wherein the outer part 301 adopts a double V-shaped structure, that is, its support in both the horizontal and vertical planes is V-shaped, and the middle part 302 adopts a structure close to an X-shape.

[0039] See also Figure 1 , Figure 2 , Figure 4 In several row and column units on the outer edge of the energy absorbing core 3, circular nail holes are opened at the connection between two units, and the first orthogonal glued laminated timber wallboard 1 and the energy absorbing core layer 3 are connected by the first screw 4, and the second orthogonal glued laminated timber wallboard 2 and the energy absorbing core layer 3 are connected by the second screw 5.

[0040] See also Figure 5 The connecting member 6 includes two ribbed angle steels 601 and 602, a channel steel plate 603 or 608, a first high-strength bolt 604 connecting the angle steel 601 and the channel steel plate 603 or 608, a second high-strength bolt 605 connecting the angle steel 602 and the channel steel plate 603 or 608, and rectangular friction plates 606 and 607.

[0041] See also Figure 8 The cross-laminated timber floor 7 is provided with a plurality of rectangular holes for accommodating the grooved steel plates 603 and 608, and the corners of the holes are rounded.

[0042] See also Figure 1 , Figure 2 , Figure 5 The angle steels 601 and 602 are provided with a plurality of conical holes respectively, and are fixed to the first cross-laminated timber wall panel 1 and the second cross-laminated timber wall panel 2 respectively by screws 10 and 11. A certain gap should be left between the ribbed angle steel 602 and the first cross-laminated timber wall panel 1.

[0043] See also Figure 1 , Figure 2, Figure 5 , Figure 6 , Figure 7 The grooved steel plate located at the side of the orthogonal glued timber floor 7 is made of 603, and the grooved steel plate located in the middle of the orthogonal glued timber floor 7 is made of 608. Several circular holes are opened on the long side and the short side, and are fixed to the orthogonal glued timber floor 7 by screws 8 and 9.

[0044] See also Figure 5 , Figure 6 , Figure 7 The angle steels 601 and 602 respectively have the first fixing bolt hole and the second fixing bolt hole at the bottom center position, the grooved steel plate has the first friction oblong hole and the second friction oblong hole at the corresponding position on the connecting surface, and the rectangular friction plates 606 and 607 have circular holes at the corresponding position.

[0045] See also Figure 1 , Figure 2 , Figure 5 After the first high-strength bolt 604 passes through the first fixing bolt hole, the circular hole of the rectangular friction plate 606 and the first friction oblong hole, the angle steel 601, the rectangular friction plate 606 and the grooved steel plate 603 or 608 are connected and fixed; after the second high-strength bolt 605 passes through the second fixing bolt hole, the circular hole of the rectangular friction plate 607 and the second friction oblong hole, the angle steel 602, the rectangular friction plate 607 and the grooved steel plate 603 or 608 are connected and fixed.

[0046] The above-mentioned embodiment of the present invention enables the wall to effectively bear the vertical load and horizontal load through the reliable connection of angle steel, high-strength bolts and screws, thereby ensuring the integrity and stress-bearing performance of the structural system.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure, characterized in that: The invention comprises a first cross-laminated timber wallboard (1), a second cross-laminated timber wallboard (2), a structural energy absorbing core layer (3), a first screw (4), a second screw (5), a connecting piece (6), a cross-laminated timber floor board (7), a third screw (8), a fourth screw (9), a fifth screw (10) and a sixth screw (11); The structural energy absorbing core layer (3) is located between the first cross-laminated timber wallboard (1) and the second cross-laminated timber wallboard (2); the structural energy absorbing core layer (3), the first cross-laminated timber wallboard (1) and the second cross-laminated timber wallboard (2) form an energy absorbing shear wall; The energy-absorbing shear wall structure connects the first cross-laminated timber wall panel (1) and the cross-laminated timber floor panel (7) and the second cross-laminated timber wall panel (2) and the cross-laminated timber floor panel (7) through a connecting piece (6); the structural energy-absorbing core layer (3), the connecting piece (6), the first cross-laminated timber wall panel (1), the second cross-laminated timber wall panel (2) and the cross-laminated timber floor panel (7) form a shear wall structure; The connecting member (6) comprises a first ribbed angle steel (601) and a second ribbed angle steel (602), a first channel steel plate (603) or a second channel steel plate (608), a first high-strength bolt (604) connecting the first ribbed angle steel (601) and the first channel steel plate (603) or the second channel steel plate (608), and a second high-strength bolt (605) connecting the second ribbed angle steel (602) and the first channel steel plate (603) or the second channel steel plate (608); A first rectangular friction plate (606) is embedded between the first ribbed angle steel (601) and the first grooved steel plate (603), a first rectangular friction plate (606) is embedded between the first ribbed angle steel (601) and the second grooved steel plate (608), a second rectangular friction plate (607) is embedded between the second ribbed angle steel (602) and the first grooved steel plate (603), and a second rectangular friction plate (607) is embedded between the second ribbed angle steel (602) and the second grooved steel plate (608); The structural energy absorbing core layer (3) has a plurality of columns and rows of units in the middle, and circular nail holes are provided at the edge connections of the plurality of columns and rows of units. The first cross-laminated timber wallboard (1) is connected to the structural energy absorbing core layer (3) via the first screw (4), and the second cross-laminated timber wallboard (2) is connected to the structural energy absorbing core layer (3) via the second screw (5); The structural energy absorbing core layer (3) is obtained by obtaining a plurality of energy absorbing units by extrusion forging, and then connecting the ends of the energy absorbing units by welding; The energy absorbing core layer (3) is symmetrically constructed. The energy absorbing unit is composed of an outer portion (301) and a middle portion (302). The outer portion (301) is a double V-shaped structure, and the middle portion (302) is a nearly X-shaped structure.

2. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 1, characterized in that: The cross-laminated timber floor (7) is provided with a plurality of rectangular holes for accommodating the first grooved steel plate (603) and the second grooved steel plate (608), and the corners of the holes are rounded.

3. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 1, characterized in that: The first ribbed angle steel (601) is fixed to the first cross-laminated timber wall panel (1), and the second ribbed angle steel (602) is fixed to the second cross-laminated timber wall panel (2). The first ribbed angle steel (601) and the second ribbed angle steel (602) are respectively provided with a plurality of conical holes. The first ribbed angle steel (601) is fixed to the first cross-laminated timber wall panel (1) by the fifth screw (10), and the second ribbed angle steel (602) is fixed to the second cross-laminated timber wall panel (2) by the sixth screw (11).

4. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 1, characterized in that: The long sides and short sides of the first grooved steel plate (603) and the second grooved steel plate (608) are provided with a plurality of conical holes and are fixed to the cross-laminated timber floor (7) by means of the third screws (8) and the fourth screws (9); the first grooved steel plate (603) is used at the side of the cross-laminated timber floor (7), and the second grooved steel plate (608) is used at the middle of the cross-laminated timber floor (7).

5. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 3 is characterized in that: The first ribbed angle steel (601) and the second ribbed angle steel (602) are respectively provided with a first fixing bolt hole and a second fixing bolt hole at the center position, the first grooved steel plate (603) and the second grooved steel plate (608) are respectively provided with a first friction oblong hole and a second friction oblong hole, and the first rectangular friction plate (606) and the second rectangular friction plate (607) are respectively provided with a circular hole.

6. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 5, characterized in that: After the first high-strength bolt (604) passes through the first fixing bolt hole, the circular hole of the first rectangular friction plate (606) and the first friction oblong hole in sequence, the first ribbed angle steel (601) is connected and fixed to the first grooved steel plate (603) or the second grooved steel plate (608).

7. The cross-laminated timber sandwich explosion-proof energy-absorbing shear wall structure according to claim 6, characterized in that: After the second high-strength bolt (605) passes through the second fixing bolt hole, the circular hole of the second rectangular friction plate (607) and the second friction oblong hole in sequence, the second ribbed angle steel (602) is connected and fixed to the first grooved steel plate (603) or the second grooved steel plate (608).

Images