Large-span wood structure steel-wood composite beam-column joint structure

Abstract

The utility model discloses a kind of large-span wood structure steel-wood composite beam column joint structure, it is related to wood structure construction technology field, the structure includes wood structure frame beam and wood structure frame column, the joint of wood structure frame beam and wood structure frame column is provided with wooden knee brace obliquely, and the both ends of wooden knee brace are connected with wood structure frame beam, wood structure frame column respectively by connecting piece, and the inside of wooden knee brace, the position of wood structure frame beam and wooden knee brace being connected is equipped with friction energy dissipation structure.The wooden knee brace and the built-in friction energy dissipation structure in the utility model form steel-wood composite support structure, through the synergistic effect of steel-wood composite support structure and connecting piece, compensate the defect of insufficient strength of wood, can reduce the calculation span of frame beam, reduce mid-span bending moment and deformation, so that wood structure beam can be applied to larger span building.

Description

Technical Field

[0001] This utility model relates to the field of timber structure construction technology, specifically to a large-span timber structure steel-timber composite beam-column joint structure. Background Technology

[0002] With the deepening of global low-carbon and environmental protection concepts, timber-framed buildings are ushering in development opportunities due to their unique advantages. my country's forest coverage rate has exceeded 25%, ranking among the world's leading levels. The zoned logging and cultivation recycling model provides ample material resources for timber-framed buildings. As a natural negative carbon material, timber's total life-cycle carbon emissions are 50%-70% lower than those of reinforced concrete structures. It effectively reduces the use of high-carbon materials such as steel and concrete, alleviating environmental pressure. Therefore, it has been included in the national green building promotion catalog and receives various policy supports, including financial subsidies and demonstration project support.

[0003] However, the application of timber structures in large-span, large-space settings has long been limited. Timber's structural strength in terms of compression, bending, shear, and torsion is relatively weaker than steel, and traditional mortise and tenon joints are only suitable for small to medium spans and low-rise buildings. In existing technologies, to improve the span adaptability of timber structures, some solutions use pure steel structures to replace or excessively increase the amount of steel. While this increases strength, it damages the natural properties and environmental advantages of timber structures and significantly increases costs. Other solutions use simple steel-timber splicing, but these suffer from weak joint connections and unreasonable stress distribution, resulting in poor structural stability and insufficient seismic performance.

[0004] Meanwhile, beam-column joints, as critical load-bearing components of timber frame structures, are prone to lateral deformation and buckling instability under natural disasters such as earthquakes. Existing joint structures lack effective energy dissipation and vibration reduction mechanisms, making it difficult to meet the design requirements of high-intensity seismic zones. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a large-span timber-steel composite beam-column joint structure that can solve the problems of existing timber structures being unable to be applied to large-span buildings, having poor structural stability, and insufficient seismic performance. This structure breaks through the span limitations of traditional timber structures through the synergistic effect of steel and timber materials, while taking into account both structural stability and architectural aesthetics.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a large-span timber-steel composite beam-column joint structure, including a timber frame beam and a timber frame column. The joint between the timber frame beam and the timber frame column is provided with inclined wooden corner braces, and the two ends of the wooden corner braces are respectively connected to the timber frame beam and the timber frame column through connectors. Friction energy dissipation structures are provided inside the wooden corner braces and at the connection between the timber frame beam and the wooden corner braces. The friction energy dissipation structures are used to dissipate seismic energy during earthquakes, reduce joint damage, and improve structural ductility.

[0007] Furthermore, the wooden corner brace is located at the inside corner formed by the wooden frame beam and the wooden frame column, and the angle between the wooden corner brace and the horizontal plane can be 30°-60°; among them, the wooden corner brace forms a 45° angle with the wooden frame beam and the wooden frame column, which can maximize the supporting effect.

[0008] Furthermore, the connector includes a steel pad, and a steel pad is fixedly connected to each end of the wooden corner brace. One steel pad is attached to the wooden frame beam, and the other steel pad is attached to the wooden frame column and fixedly connected to the wooden frame column by bolts.

[0009] Furthermore, the friction energy dissipation structure includes multiple steel filler plates located within the wooden corner braces and steel filler plates located within the wooden frame beams; wherein, the multiple steel filler plates located within the wooden corner braces are evenly spaced and built into the wooden corner braces, and are fixedly connected to the wooden corner braces by bolts; the steel filler plates located within the wooden frame beams are fixed to the wooden frame beams by bolts, the position of the steel filler plates located within the wooden frame beams corresponds to the end where the wooden corner braces are connected to the wooden frame beams, and the bottom end of the steel filler plates located within the wooden frame beams extends downward to the outside of the wooden frame beams and is fixedly connected to the corresponding steel pads.

[0010] Furthermore, a steel pad is fixed to the connection between the wooden frame column and the wooden frame beam by bolts. Both sides of the steel pad are in contact with the wooden frame column and the wooden frame beam. A steel filler plate is built into the connection between the wooden frame beam and the wooden frame column. The steel filler plate is fixed to the wooden frame beam by bolts. At the same time, the steel filler plate extends towards the wooden frame column on the side facing the wooden frame column and is fixedly connected to the corresponding steel pad.

[0011] Furthermore, grooves are provided at the positions of the steel pads at both ends of the wooden frame columns and wooden frame beams corresponding to the wooden corner braces. The shape and size of the grooves are adapted to the shape and size of the steel pads. Wooden sealing plates of the same material can be used to seal the grooves on the outside, and the wooden sealing plates are fixed with wood screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The wooden corner braces and the built-in steel filler plates in this utility model form a steel-wood composite support structure. Through the synergistic effect of the steel-wood composite support structure and the connectors, the deficiency of wood strength is compensated, which can reduce the calculated span of the frame beam, reduce the mid-span bending moment and deformation, and make the wooden structure beam applicable to buildings with larger spans.

[0013] The wooden corner brace of this invention provides lateral support points for the wooden frame columns, shortens the out-of-plane free length of the wooden frame columns, enhances the joint strength of the wooden frame beams and wooden frame columns, avoids local buckling instability failure, and improves the overall load-bearing capacity and stability of the wooden frame.

[0014] This invention dissipates seismic energy through the friction between the steel filler plate inside the wooden corner brace and the wooden corner brace. At the same time, during an earthquake, the steel filler plate inside the wooden frame beam is under tension, which also dissipates seismic energy. Through the mutual cooperation between the steel filler plate inside the wooden corner brace and the steel filler plate inside the wooden frame beam, joint damage can be reduced, structural ductility can be improved, and the seismic design requirements of the earthquake zone can be met.

[0015] In this invention, the steel pad, steel filler plate, and bolts are all hidden inside the wooden structure, and the wooden corner braces are set at the inside corners, which neither damages the natural beauty of the wooden structure nor occupies the internal space.

[0016] This utility model uses wood as the main material and steel as a supplement. It can take advantage of the advantages of wood, such as being environmentally friendly and renewable, lightweight, easy to process, and having heat insulation properties, while making reasonable use of the high strength of steel, reducing material waste and carbon emissions, and improving construction efficiency and controlling construction costs. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of the present invention—a large-span timber-steel composite beam-column joint structure; Figure 2 This is a top view of an embodiment of the present invention—a large-span timber-steel composite beam-column joint structure; Figure 3 For along Figure 2 Cross-sectional view at section line 1-1.

[0018] Explanation of the reference numerals in the figure: 1. Timber frame beams; 2. Timber frame columns; 3. Timber corner braces; 4. Steel pads; 5. Bolts; 6. Steel filler plates. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0020] Reference Figures 1 to 3 This embodiment provides a large-span timber-steel composite beam-column joint structure, including a timber frame beam 1 and a timber frame column 2. The joint between the timber frame beam 1 and the timber frame column 2 is provided with inclined wooden corner braces 3, and the two ends of the wooden corner braces 3 are connected to the timber frame beam 1 and the timber frame column 2 respectively through connectors. Friction energy dissipation structures are provided inside the wooden corner braces 3 and at the connection between the timber frame beam 1 and the wooden corner braces 3. The friction energy dissipation structures are used to dissipate seismic energy during earthquakes, reduce joint damage, and improve structural ductility.

[0021] In this embodiment, the timber frame beam 1, timber frame column 2, and timber corner brace 3 are all made of larch glued laminated timber.

[0022] In this embodiment, the wooden corner brace 3 is located at the inside corner formed by the wooden frame beam 1 and the wooden frame column 2. The angle between the wooden corner brace 3 and the horizontal plane can be 30°-60°, wherein the wooden corner brace 3 forms a 45° angle with the wooden frame beam 1 and the wooden frame column 2, which can maximize the supporting effect. The wooden corner brace 3 provides a lateral support point for the wooden frame column 2, shortens the out-of-plane free length of the wooden frame column 2, enhances the joint strength of the connection between the wooden frame beam 1 and the wooden frame column 2, avoids local buckling instability failure, and improves the overall load-bearing capacity and stability of the wooden frame.

[0023] In this embodiment, the connector includes a steel pad 4. A steel pad 4 is fixedly connected to each end of the wooden corner brace 3. A steel pad 4 is attached to the wooden frame beam 1, and a steel pad 4 is attached to the wooden frame column 2 and fixedly connected to the wooden frame column 2 by bolts 5.

[0024] In this embodiment, the friction energy dissipation structure includes multiple steel filler plates 6 located within the wooden corner brace 3 and a steel filler plate 6 located within the wooden frame beam 1. The steel filler plates 6 within the wooden corner brace 3 are evenly spaced and fixedly connected to the wooden corner brace 3 by bolts 5. The steel filler plates 6 within the wooden frame beam 1 are fixed to the wooden frame beam 1 by bolts 5, with their positions corresponding to the end where the wooden corner brace 3 connects to the wooden frame beam 1. The bottom end of the steel filler plate 6 within the wooden frame beam 1 extends downwards to the outside of the wooden frame beam 1 and is fixedly connected to the corresponding steel pad 4. The steel filler plates 6 within the wooden frame beam 1 and the corresponding steel pad 4 can be fixedly connected by welding.

[0025] The wooden corner braces 3 and the built-in steel filler plates 6 form a steel-wood composite support structure. Through the synergistic effect of the steel-wood composite support structure and the connectors, the deficiency of wood strength is compensated, which can reduce the calculated span of the frame beam, reduce the mid-span bending moment and deformation, and make the wooden structure beams applicable to buildings with larger spans. At the same time, the friction between the built-in steel filler plates 6 and the wooden corner braces 3 can dissipate seismic energy. During an earthquake, the steel filler plates 6 in the wooden frame beam 1 are under tension, which can also dissipate seismic energy. Through the mutual synergy between the steel filler plates 6 in the wooden corner braces 3 and the steel filler plates 6 in the wooden frame beam 1, joint damage can be reduced, structural ductility can be improved, and the seismic design requirements of the seismic zone can be met.

[0026] In this embodiment, a steel pad 4 is fixed to the connection between the timber frame column 2 and the timber frame beam 1 using bolts 5. Both sides of the steel pad 4 are in close contact with both the timber frame column 2 and the timber frame beam 1. Furthermore, a steel filler plate 6 is embedded at the connection between the timber frame beam 1 and the timber frame column 2. This steel filler plate 6 is fixed to the timber frame beam 1 using bolts 5, and extends towards the timber frame column 2 on one side, where it is fixedly connected to the corresponding steel pad 4. The steel filler plate 6 can be fixed to the corresponding steel pad 4 by welding. For larger spans and when the cross-sectional width of the timber frame beam 1 is large, multiple steel filler plates 6 can be installed to improve the overall load-bearing capacity of the timber structure.

[0027] In this embodiment, grooves are provided at the positions of the steel pads 4 at both ends of the wooden frame column 2 and the wooden frame beam 1 corresponding to the wooden corner braces 3. The shape and size of the grooves are adapted to the shape and size of the steel pads 4. Wooden sealing plates of the same material can be used to seal the grooves on the outside. The wooden sealing plates are fixed by wood screws to ensure that the appearance of the wooden structure is flat and uniform.

[0028] The steel pad 4, steel filler plate 6, and bolts 5 are all hidden inside the wooden structure through the cooperation of the groove and the wooden sealing plate.

[0029] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A large-span timber-steel composite beam-column joint structure, comprising timber frame beams and timber frame columns, characterized in that: At the joints between the timber frame beams and timber frame columns, inclined wooden corner braces are provided. Both ends of the wooden corner braces are connected to the timber frame beams and timber frame columns respectively via connectors. Friction energy dissipation structures are provided inside the wooden corner braces and at the connection points between the timber frame beams and the wooden corner braces. The connectors include steel pads. Each end of the wooden corner brace is fixedly connected to a steel pad, with one steel pad fitting against the timber frame beam and the other fitting against the timber frame column and fixedly connected to the timber frame column with bolts. The friction energy dissipation... The structure includes multiple steel filler plates located within the wooden corner braces and steel filler plates located within the wooden frame beams. The steel filler plates within the wooden corner braces are evenly spaced and fixedly connected to the wooden corner braces by bolts. The steel filler plates within the wooden frame beams are fixed to the wooden frame beams by bolts, with the position of the steel filler plates within the wooden frame beams corresponding to the end where the wooden corner braces connect to the wooden frame beams. The bottom end of the steel filler plates within the wooden frame beams extends downwards to the outside of the wooden frame beams and is fixedly connected to the corresponding steel pads.

2. The large-span timber-steel composite beam-column joint structure according to claim 1, characterized in that: The wooden corner brace is located at the inside corner formed by the wooden frame beam and the wooden frame column, and the angle between the wooden corner brace and the horizontal plane is 30°-60°.

3. A large-span timber-steel composite beam-column joint structure according to claim 1 or 2, characterized in that: The connection between the wooden frame column and the wooden frame beam is secured with a steel pad by bolts. Both sides of the steel pad are in close contact with the wooden frame column and the wooden frame beam. A steel filler plate is embedded at the connection between the wooden frame beam and the wooden frame column. The steel filler plate is fixed to the wooden frame beam by bolts. At the same time, the side of the steel filler plate facing the wooden frame column extends towards the wooden frame column and is fixedly connected to the corresponding steel pad.

4. The large-span timber-steel composite beam-column joint structure according to claim 3, characterized in that: The wooden frame columns and beams are provided with grooves at the positions of the steel pads at both ends of the wooden corner braces. The shape and size of the grooves are adapted to the shape and size of the steel pads. The grooves are sealed with wooden end plates of the same material on the outside of the grooves and fixed with wood screws.

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