Nailing wood-concrete modular shear wall

Abstract

The invention discloses a nailing wood-concrete modular shear wall. The nailing wood-concrete modular shear wall is formed by combining one or more nailing wood-concrete composite unit plates (100). A nailing wood-concrete composite board (100) comprises a nailing wood board (1) and an ultra-high performance concrete laminated layer (2) which are combined through screws (3). Wherein the nailing wood board (1) is formed by splicing two wood laths (4) with different widths in a staggered manner, and grooves (5) are formed in the surface of the nailing wood board (1); and a reinforcing mesh (7) is arranged in the ultra-high performance concrete laminated layer (2). The composite unit plate (100) is connected with the steel or wood frame (200) through the wood screws (10) and the wood ribs (20). The adjacent unit plates are connected through steel braces (30), and ultra-high performance concrete post-cast strips (40) are poured at joints to form a whole. The modular shear wall is provided for a wood / steel frame structure, and compared with the prior art, the modular shear wall has the advantages of being light in self weight, high in lateral resistance, high in greening level, easy to produce, convenient and fast to assemble, low in cost and the like.

Description

Technical Field

[0001] This invention relates to steel / wood frame structures, and more particularly to a prefabricated shear wall, belonging to the field of building structures. Background Technology

[0002] In steel or timber frame structures, due to the relatively weak lateral stiffness of the frame itself, once the building height exceeds a certain range, the inter-story displacement under horizontal loads becomes significant, making it difficult to meet design requirements. Therefore, lateral force resisting measures are necessary, primarily including inter-column bracing and shear walls. Inter-column bracing is the main structural measure to enhance the lateral force resistance of frame structures. Its placement is relatively fixed, its dimensions are large, and the construction of its joints is complex, significantly impacting the usability of the building's interior space. In contrast, shear walls installed within the cavities of the frame offer greater structural flexibility. They can also function as partition walls, occupying almost no usable interior space, making them highly adaptable. Currently, steel frame structures utilize concrete shear walls or steel plate shear walls, both of which suffer from drawbacks such as heavy weight and environmentally unfriendly materials. In timber frame structures, lightweight timber frame shear walls or cross-laminated timber (CLT) shear walls are generally used. The former has limited lateral force resisting capacity and is not suitable for multi-story timber or steel structures. CLT shear walls have high lateral resistance and are suitable for multi-story and high-rise timber structures, but their manufacturing requires large-scale specialized equipment and is costly, making them difficult to promote in areas lacking timber structure processing industries.

[0003] Nail-laminated timber (NLT) is a heavy-duty timber component made by layering and nailing timber planks together along the direction of the planks. In timber structures, it is generally used as floor slabs, shear walls, or structural columns. Compared to engineered wood products such as glued laminated timber (GLLT) and ductile timber (CLT), which are commonly used in timber structures, NLT manufacturing does not require adhesives or large machinery, making it more environmentally friendly and simpler to process. NLT has significant advantages in areas lacking the foundation for timber structure processing. However, NLT shear walls have lower lateral strength than CLT and are not suitable for multi-story or high-rise timber structures or steel structures.

[0004] Clearly, existing shear walls have significant shortcomings for steel / wood frame structures, and their performance needs to be improved. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a modular shear wall for wood / steel frame structures, which has the advantages of light weight, high lateral resistance, high level of greenness, simple production, convenient assembly and low cost.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A modular shear wall made of nailed timber and concrete, comprising one or more nailed timber and concrete composite unit panels (100), characterized in that: the nailed timber and concrete composite unit panels (100) are connected to a steel frame or a timber frame (200) by wood screws (10) and wood ribs (20); the nailed timber and concrete composite unit panels (100) include nailed timber boards (1) and ultra-high performance concrete composite layers (2), which are joined together by screws (3); the nailed timber boards (1) are formed by staggered arrangement of two different widths of wooden strips (4) and nailed together along the wide side, forming grooves (5) on the surface of the board; The ultra-high performance concrete composite layer (2) is provided with a steel mesh (7), the ends of the horizontal steel bars (8) of the steel mesh (7) extend outward from the ultra-high performance concrete composite layer (2), and lapped steel bars (9) are tied between the horizontal steel bars (8); the nailed wood-concrete composite unit boards (100) are connected by steel tie bars (30), the steel tie bars (30) are arranged in pairs at the joints, and nails (6) are used to tie the nailed wood-concrete composite unit boards (100) on both sides together; at the joints between the nailed wood-concrete composite unit boards (100), ultra-high performance concrete post-cast strips (40) are poured to form an integral structure.

[0008] Preferably, the tip of the screw (3) is anchored in the nailed wooden board (1), and the head is embedded in the ultra-high performance concrete composite layer (2).

[0009] Preferably, the surface grooves (5) formed by the two different widths of wooden strips (4) have a depth of 5~10mm.

[0010] Preferably, the ultra-high performance concrete composite layer (2) is poured on the side of the nailed wooden board (1) with grooves (5), and its total thickness is 10~20mm, including the internal steel mesh (7).

[0011] Preferably, the wooden rib (20) is fixed to the steel frame or wooden frame (200) by a connecting screw (50), one end of which is welded to the steel frame or connected to the wooden frame by a thread.

[0012] Compared to existing technologies, the advantages of this invention are as follows: It provides a modular shear wall made of nailed timber and ultra-high performance concrete, where the unit panels are composite panels formed by laminating nailed timber boards and ultra-high performance concrete. The grooves and screws between the two serve as shear connection components, thereby creating a combined effect that enables synergistic stress distribution. Its lateral stiffness and load-bearing capacity are significantly higher than those of lightweight timber frame shear walls and nailed timber shear walls, making it suitable for use as a shear wall in multi-story and high-rise timber structures. Since nailed timber boards can be made from plantation timber with relatively low mechanical properties and do not require large processing equipment or adhesives, they offer advantages such as simple production and low cost. Compared to concrete shear walls or steel plate shear walls, the modular shear wall made extensive use of wood, significantly improving its environmental friendliness. It is also lightweight, easy to hoist, and suitable for prefabricated construction, resulting in high construction efficiency. Therefore, it can also replace concrete shear walls and steel plate shear walls in steel frame structures. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the exterior of a prefabricated nailed timber-concrete composite modular shear wall.

[0014] Figure 2 This is a schematic diagram of a nailed wooden board structure.

[0015] Figure 3 This is a schematic diagram of a nailed timber-concrete composite unit panel structure.

[0016] Figure 4 This is a schematic cross-sectional view of a nailed timber-concrete composite unit panel.

[0017] Figure 5 This is a schematic diagram of the connection between nailed timber-concrete composite unit panels.

[0018] In the figure: (1) nailed wooden board; (2) ultra-high performance concrete composite layer; (3) screw; (4) wooden strip; (5) groove; (6) nail; (7) steel mesh; (8) horizontal steel bar; (9) lap steel bar; (10) wood screw; (20) wooden rib; (30) steel tie rod; (40) ultra-high performance concrete post-cast strip; (50) connecting bolt; (100) nailed wood-concrete composite unit board; (200) steel frame or wood frame. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The present invention provides a modular shear wall of nailed timber-concrete composite, the core of which is composed of one or more nailed timber-concrete composite unit panels (100); the nailed timber-concrete composite unit panels (100) are connected to the steel frame or the timber frame (200) by wood screws (10) and wood ribs (20); the nailed timber-concrete composite panel (100) includes nailed wood boards (1) and ultra-high performance concrete composite layers (2), which are joined together by screws (3); the nailed wood boards (1) are composed of two different widths of wood strips (4) arranged alternately and nailed together along the wide side, forming grooves (5) on the surface of the board. The ultra-high performance concrete composite layer (2) is provided with a steel mesh (7) inside. The ends of the horizontal steel bars (8) of the steel mesh (7) extend outward from the ultra-high performance concrete composite layer (2), and lapped steel bars (9) are tied between the horizontal steel bars (8). Adjacent nailed wood-concrete composite unit boards (100) are connected by steel tie bars (30). The steel tie bars (30) are arranged in pairs at the joints, and nails (6) are used to tie the nailed wood-concrete composite unit boards (100) on both sides together. At the joints between the nailed wood-concrete composite unit boards (100), ultra-high performance concrete post-cast strips (40) are poured to form an integral structure.

[0020] Example 1:

[0021] I. Fabrication of nailed timber-concrete composite unit panels

[0022] ① Two different widths of wooden strips (4) are nailed together along the wide side and layered together to form a nailed board (1). A groove (5) is formed on one side of the nailed board (1).

[0023] ② Screw multiple screws (3) into the nailed board (1) from the surface with grooves (5), with the exposed length of the screw head (3) being 10mm;

[0024] ③ Fix the steel mesh (7) to the nail head end of the screw (3) by electric welding, then set the side mold around the nailed wooden board (1) and ensure that the horizontal steel bar (8) extends 200mm beyond the side mold, and then pour the ultra-high performance concrete composite layer (2) with a thickness of 20mm;

[0025] ④ After the ultra-high performance concrete composite layer (2) reaches the strength required by the design, remove the side formwork and complete the production of the nailed wood-concrete composite unit board (100).

[0026] II. On-site assembly of nailed timber-concrete modular shear walls

[0027] ① Weld connecting screws (50) to the inside of the steel frame (200) and fix the wooden ribs (20) to the steel frame (200) with connecting bolts (50);

[0028] ②From one end of the steel frame (200), install the first nailed wood-concrete composite unit board (100), and fix the upper and lower edges of the nailed wood-concrete composite unit board (100) to the side of the wood rib (20) by wood screws (10);

[0029] ③ Repeat step ② to connect the remaining nailed timber-concrete composite unit board (100) to the timber rib (20);

[0030] ④ At the joint of the nailed timber-concrete composite unit board (100), multiple steel tie rods (30) are arranged across the joint along the height direction of the shear wall. The two ends of the steel tie rods (30) are fixed to the nailed timber board (1) with nails (6), and the steel tie rods are arranged in pairs on both sides of the nailed timber board (1) to connect the nailed timber-concrete composite unit board (100).

[0031] ⑤ In the joint area of ​​the nailed timber-concrete composite unit board (100), the lapped steel bars (9) are tied one by one between the horizontal steel bars (8) on both sides;

[0032] ⑥ Install formwork in the joint area of ​​the nailed timber-concrete composite unit board (100), open a window at the top of the formwork, and then pour ultra-high performance concrete through the window of the formwork.

[0033] ⑦ After the strength of the ultra-high performance concrete post-cast strip (40) reaches the design requirements, remove the formwork and complete the on-site assembly construction of the nailed timber-concrete modular shear wall.

[0034] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention, such as replacing nailed wood panels with plywood or bamboo panels, replacing ultra-high performance concrete with other types of cement-based materials, replacing steel tie rods with tie members of other materials or shapes, and replacing wooden ribs with bamboo squares, steel pipes, aluminum pipes, etc., can all be made through simple technical substitutions based on the prompts of the present invention, and therefore all fall within the scope of protection claimed by the present invention.

Claims

1. A pinned timber-concrete modular shear wall, composed of one or more pinned timber-concrete composite unit panels (100), characterized in that: The nail-wood concrete composite unit plate (100) is connected with the steel frame or the wood frame (200) through the wood screw (10) and the wood rib (20); the nail-wood concrete composite unit plate (100) comprises a nail-wood plate (1) and an ultra-high performance concrete laminated layer (2), and the two are combined together through the screw (3); the nail-wood plate (1) is formed by interlaced arrangement of two wood strips (4) with different widths and nailing along the wide surface, and a groove (5) is formed on the plate surface; the ultra-high performance concrete laminated layer (2) is provided with a steel mesh (7) inside, the end of the horizontal steel bar (8) of the steel mesh (7) is extended outside the ultra-high performance concrete laminated layer (2), and the lapping steel bar (9) is bound between the horizontal steel bars (8); the nail-wood concrete composite unit plates (100) are connected through the steel stay (30), the steel stay (30) is arranged in pairs at the joint, and the nail-wood concrete composite unit plates (100) on the two sides are pulled together by the nail (6); at the joint between the nail-wood concrete composite unit plates (100), the ultra-high performance concrete post-poured belt (40) is poured to form an integral structure.

2. A pinned wood-concrete modular shear wall according to claim 1, characterized in that: The screw (3) is anchored in the nail-wood plate (1), and the screw cap is buried in the ultra-high performance concrete laminated layer (2).

3. A pinned wood-concrete modular shear wall according to claim 1, wherein: The surface groove (5) formed by the two wood strips (4) with different widths has a depth of 5-10 mm.

4. A pinned wood-concrete modular shear wall according to claim 1, wherein: The ultra-high performance concrete laminated layer (2) is poured on one side of the nail-wood plate (1) with the groove (5), and has a total thickness of 10-20 mm and contains the steel mesh (7) arranged inside.

5. A pinned wood-concrete modular shear wall according to claim 1, wherein: The wood rib (20) is fixed with the steel frame or the wood frame (200) through the connecting screw rod (50), one end of the connecting screw rod (50) is welded on the steel frame or connected with the wood frame through threads.

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