Prefabricated seismic-resistant wood structure beam-column joint

Abstract

The application relates to the technical field of beam-column joint installation, and discloses an assembled anti-seismic wood structure beam-column joint, which comprises a stand column, a connecting beam, an insertion block, a buffer piece and a reinforcing plate. The insertion block is fixedly installed on the end face in the length direction of the connecting beam. The stand column is provided with an insertion hole, and the insertion block is fixedly inserted into the insertion hole. The buffer piece comprises a spring. The spring is sleeved on the insertion block. One end of the spring abuts against the stand column, and the other end of the spring abuts against the end face of the connecting beam. The reinforcing plate is fixedly installed on the stand column and used for supporting the connecting beam and adhering to the surface of the connecting beam. The application can reduce structural damage. When an earthquake occurs, the beam column is dislocated, the spring is deformed to absorb energy, and the impact force is buffered.

Description

Technical Field

[0001] This application relates to the technical field of beam-column joint installation, and in particular to a prefabricated earthquake-resistant timber structure beam-column joint. Background Technology

[0002] In timber-framed buildings, the seismic beam-column joints are key components connecting beams and columns. Their design and construction quality directly affect the stability and safety of the entire building. Timber-framed beam-column joints have typical semi-rigid characteristics, which means they can withstand certain loads and have good elastic properties. During an earthquake, these joints can, to some extent, offset the horizontal thrust and allow for a certain amount of deformation, thereby absorbing some seismic energy and reducing the seismic response of the entire structure.

[0003] In the prior art, Chinese patent publication number CN220790093U discloses "a sleeve-type glued laminated timber beam-column joint, in which the entire wooden structure of the joint is wrapped with steel, which on the one hand prevents the bolt preload from squeezing and damaging the surface of the wooden structure, and on the other hand protects the wooden structure and prevents deformation and cracking when the joint is subjected to accidental loads." However, it still has the following defects: it uses a lot of bolts for connection. When this connection method is subjected to a large bending moment, more bolts or larger bolt diameters are required, which may lead to local stress concentration and failure of the wood. Ultimately, the premature failure of the joint may lead to the collapse of the entire structure. Utility Model Content

[0004] To address the aforementioned technical issues, this application provides a prefabricated earthquake-resistant timber structure beam-column joint.

[0005] This application provides a prefabricated earthquake-resistant timber structure beam-column joint, employing the following technical solution:

[0006] A prefabricated earthquake-resistant timber structure beam-column joint, comprising:

[0007] Columns;

[0008] Connecting beams;

[0009] An insert block is fixedly installed on the end face of the connecting beam along its length. The column has an insertion hole, and the insert block is fixedly inserted into the insertion hole.

[0010] The buffer includes a spring, which is sleeved on the insert block, with one end of the spring abutting against the column and the other end of the spring abutting against the end face of the connecting beam;

[0011] The reinforcing plate is fixedly installed on the column to support the connecting beam and is in contact with the surface of the connecting beam.

[0012] By adopting the above technical solutions, the spring is compressed / stretched when the beam and column are relatively displaced, which converts the seismic energy into elastic potential energy and dissipates it, reducing structural damage. When the beam and column shift during an earthquake, the spring deforms and absorbs energy, buffering the impact force. The plug-hole cooperation transfers the load, avoiding the local crushing of the wood caused by bolted connections. The reinforcement plate provides beam end support, preventing the beam from sagging or twisting and improving the rigidity of the joint.

[0013] Optionally, the connecting beam includes a first connecting beam and a second connecting beam, which are located on different sides of the column, respectively.

[0014] By adopting the above technical solution, the multi-sided beams deform in coordination with the columns during an earthquake, thereby enhancing the structure's torsional resistance.

[0015] Optionally, the spring is sleeved on the insert of the first connecting beam.

[0016] Optionally, the buffer also includes an energy-absorbing plate with elastic properties, and the end face of the second connecting beam is provided with a receiving groove, the energy-absorbing plate is installed in the receiving groove, and one end of the energy-absorbing plate abuts against the column.

[0017] By adopting the above technical solutions, the energy-absorbing plate (such as rubber or damping material) supplements the elastic energy dissipation of the spring through plastic deformation, improves the low-frequency vibration absorption efficiency, and reduces the hard contact between the second beam and the column, preventing the wood from being squeezed and cracked.

[0018] Optionally, a fixing plate is fixedly connected between the first connecting beam and the second connecting beam.

[0019] By adopting the above technical solution, the fixing plate enables the two beams to form an integral frame, converting part of the bending moment into axial force and reducing the load on a single beam.

[0020] Optionally, the reinforcing plate has a stepped groove at one end away from the column, and the end face of the connecting beam fits into the wall of the stepped groove.

[0021] By adopting the above technical solution, the reinforcement plate is installed first, and the stepped groove can also guide the end of the connecting beam to be quickly aligned, thus improving assembly efficiency.

[0022] Optionally, one end of the connecting beam is connected to the insert block, and the other end of the connecting beam has a connection port, with the insert block of one connecting beam inserted into the insertion port of another connecting beam.

[0023] By adopting the above technical solution, the connection beam insertion simplifies the assembly of long-span structures.

[0024] Optionally, a buffer pad is fixedly provided on the inner sidewall of the socket, and the buffer pad is provided along the depth of the socket.

[0025] By adopting the above technical solution, the buffer pad (such as rubber) absorbs the impact force between the insert and the hole wall, preventing long-term micro-vibration wear of the wood. When the insert slides, it rubs against the buffer pad to supplement the energy consumption pathway.

[0026] In summary, this application includes at least one of the following beneficial effects:

[0027] 1. By using inserts and holes to replace bolts, localized stress concentration is avoided, thus protecting the integrity of the wood;

[0028] 2. Springs, energy-absorbing plates, and buffer pads can actively offset some of the impact from external forces;

[0029] 3. The plug-in design allows for the disassembly of nodes (e.g., if damaged, the plug can be directly pulled out to replace the beam or buffer), meeting the requirements of prefabricated buildings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a partially exploded view of the overall structure of an embodiment of this application;

[0032] Figure 3 This is a partial cross-sectional view of an embodiment of this application;

[0033] Figure 4 This is a partial exploded view of an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 10, column; 11, insertion hole; 12, buffer pad; 20, connecting beam; 21, first connecting beam; 22, second connecting beam; 23, receiving groove; 24, connection port; 30, insertion block; 40, spring; 50, reinforcing plate; 51, stepped groove; 60, strengthening plate; 70, energy-absorbing plate; 80, fixing plate; 90, auxiliary component; 91, reinforcing bar; 92, stirrup. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0036] This application discloses a prefabricated earthquake-resistant timber structure beam-column joint.

[0037] Reference Figure 1 and Figure 2A prefabricated earthquake-resistant timber structure beam-column joint includes wooden columns 10 and horizontally arranged connecting beams 20. The columns 10 typically have a quadrilateral cross-section, with insertion holes 11 on their side walls. One end face of the connecting beam 20 in the axial direction has an integrally formed insertion block 30, which is inserted into the insertion hole 11 of the column 10. A buffer element, including a spring 40 for cushioning, is sleeved around the insertion block 30. The spring 40 is a compression spring. The inner coil of the spring 40 is tightly fitted against the outer wall of the insertion block 30, one end of the spring 40 abuts against the outer surface of the column 10, and the other end abuts against the end face of the connecting beam 20. A reinforcing plate 50 is also fixedly connected to the side of the column 10, with one end of the reinforcing plate 50 attached to the outer wall of the column 10 and fixed to the column 10 by bolts. The reinforcing plate 50 is located on the upper and lower sides of the connecting beam 20, which can provide some auxiliary support for the connecting beam 20 and reduce the deflection of the connecting beam 20.

[0038] Reference Figure 2 In this embodiment, the column 10 has connecting beams 20 installed on all four sides. Each connecting beam 20 includes two first connecting beams 21 and two second connecting beams 22. The two first connecting beams 21 are symmetrically arranged on the column 10, and the two second connecting beams 22 are also symmetrically arranged on the column 10. The cross-section of the insert 30 of the first connecting beam 21 is smaller than the cross-section of the insert 30 of the second connecting beam 22. A reinforcing plate 60 is fixedly installed at the end of the second connecting beam 22. The reinforcing plate 60 and the column 10 are fixedly connected by bolts, further increasing the connection strength between the second connecting beam 22 and the column 10.

[0039] Reference Figure 2 and Figure 3 A spring 40 is fitted onto the insert 30 of the first connecting beam 21, and a rectangular receiving groove 23 is formed on the end face of the second connecting beam 22. An elastic energy-absorbing plate 70 (e.g., rubber or polyurethane material) is embedded in the receiving groove 23. The energy-absorbing plate 70 has a ring structure. One end of the energy-absorbing plate 70 abuts against the bottom wall of the receiving groove 23, and the other end abuts against the side of the column 10. The first connecting beam 21 and the second connecting beam 22 are bolted together by a transverse fixing plate 80, so that the multiple connecting beams 20 form an overall frame that cooperates in bearing the force.

[0040] The ends of the first connecting beam 21 and the second connecting beam 22 that are not connected to the column 10 are non-connecting ends. These non-connecting ends have connecting openings 24, the depth of which does not exceed one-quarter of the beam's length. Multiple sets of first connecting beams 21 are connected to each other through these connecting openings 24. Multiple first connecting beams 21 or multiple second connecting beams 22 are spliced ​​between two columns 10.

[0041] Reference Figure 4To optimize assembly accuracy, a stepped groove 51 is formed at one end of the reinforcing plate 50. The stepped groove 51 is composed of a vertical wall and a horizontal bottom wall. The end of the first connecting beam 21 is embedded in the stepped groove 51, the end face of the first connecting beam 21 is in contact with the vertical wall of the stepped groove 51, and the outer wall of the first connecting beam 21 is in contact with the horizontal bottom wall of the stepped groove 51.

[0042] Reference Figure 3 The inner wall of the insertion hole 11 of the column 10 is fully covered with a buffer pad 12 (such as a rubber lining), which continuously covers the hole depth. After the insertion block 30 is inserted, its side is in close contact with the buffer pad 12. The buffer pad 12 can also appropriately buffer the impact force of the connecting beam 20. When the insertion block 30 tends to slide, it rubs against the buffer pad 12.

[0043] Reference Figure 1 Based on the above embodiments, an auxiliary component 90 is further installed on the column 10. The auxiliary component 90 includes a steel bar 91 and a stirrup 92. The steel bar 91 is laid on the outside of the column 10, and the stirrup 92 is set on the steel bar 91 and fixes the steel bar 91 and the column 10 together. The steel bar 91 increases the cross-section of the column 10 and further improves the strength of the column 10.

[0044] The implementation principle of a prefabricated earthquake-resistant timber structure beam-column joint in this application embodiment is as follows:

[0045] The connecting beam 20 and the insert block 30 form a whole and are installed on the column 10 through the insertion hole 11. The spring 40 is sleeved on the insert block 30 of the first connecting beam 21. Since the two ends of the buffer spring 40 are fixedly connected between the column 10 and the first connecting beam 21 respectively, when the first connecting beam 21 is vibrated, the first connecting beam 21 will produce a certain amount of deformation and slight displacement along its own installation direction. At this time, the first connecting beam 21 will drive the spring 40 to deform, thus changing the rigid impact that is about to be received into a flexible impact. The energy-absorbing plate 70 of the second connecting beam 22 is set with the spring 40 and is connected to the reinforcing plate 60 through the second connecting beam 22. The reinforcing plate 50 is installed on the upper and lower sides of the first connecting beam 21 and can provide a certain auxiliary support for the first connecting beam 21. The steel bar 91 strengthens the column 10 itself and further improves the strength of the column 10.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated earthquake-resistant timber structure beam-column joint, characterized in that, include: Column (10); Connecting beam (20); Insert (30) is fixedly installed on the end face of the connecting beam (20) along its length. The column (10) has an insertion hole (11), and the insert (30) is fixedly inserted into the insertion hole (11). The buffer includes a spring (40) sleeved on the insert (30), one end of the spring (40) abutting against the column (10), and the other end of the spring (40) abutting against the end face of the connecting beam (20); The reinforcing plate (50) is fixedly installed on the column (10) to support the connecting beam (20) and is in contact with the surface of the connecting beam (20).

2. The prefabricated earthquake-resistant timber structure beam-column joint according to claim 1, characterized in that, The connecting beam (20) includes a first connecting beam (21) and a second connecting beam (22), which are located on different sides of the column (10).

3. The prefabricated earthquake-resistant timber structure beam-column joint according to claim 2, characterized in that, The spring (40) is sleeved on the insert (30) of the first connecting beam (21).

4. The prefabricated earthquake-resistant timber structure beam-column joint according to claim 3, characterized in that, The buffer also includes an energy-absorbing plate (70) with elastic properties. The end face of the second connecting beam (22) is provided with a receiving groove (23). The energy-absorbing plate (70) is installed in the receiving groove (23), and one end of the energy-absorbing plate (70) abuts against the column (10).

5. A prefabricated earthquake-resistant timber structure beam-column joint according to claim 2, characterized in that, A fixing plate (80) is fixedly connected between the first connecting beam (21) and the second connecting beam (22).

6. The prefabricated earthquake-resistant timber structure beam-column joint according to claim 1, characterized in that, The reinforcing plate (50) has a stepped groove (51) at one end away from the column (10), and the end face of the connecting beam (20) is in contact with the groove wall of the stepped groove (51).

7. A prefabricated earthquake-resistant timber structure beam-column joint according to claim 1, characterized in that, One end of the connecting beam (20) is connected to the insert (30), and the other end of the connecting beam (20) is provided with a connection port (24). The insert (30) of one connecting beam (20) is inserted into the insertion port of another connecting beam (20).

8. A prefabricated earthquake-resistant timber structure beam-column joint according to claim 1, characterized in that, A buffer pad (12) is fixedly provided on the inner side wall of the socket (11), and the buffer pad (12) is provided along the depth of the socket (11).

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