Fabricated friction energy dissipation self-resetting column base joint based on T-shaped section wooden column

Through the prefabricated friction energy-consuming self-reset column foot nodes of T-section wooden columns, combined with friction energy consumption and self-reset mechanism, the problems of lateral displacement and residual displacement of the wooden structure under the action of earthquakes are solved, and the seismic performance improvement of the high-rise wooden structure is achieved.

CN120273459AInactive Publication Date: 2025-07-08NORTHEAST FORESTRY UNIV
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510689333.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-27
Publication Date
2025-07-08
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In existing wooden structures, wooden columns are prone to large lateral displacement and residual displacement under the action of earthquakes, especially in high-rise wooden structures, it is difficult to effectively absorb seismic energy, and the cross-sectional shape of wooden columns is relatively limited.

Method used

The prefabricated friction energy-consuming self-reset column foot nodes based on T-section wooden columns are adopted, including anchor bolts, column boot mechanisms, reset components and friction energy-consuming mechanisms. The earthquake energy is dissipated through the friction energy consumption mechanism, and the reset components are used to realize the structure's self-reset, combined with a detachable connection design to achieve repair and replacement mechanisms.

Benefits of technology

Effectively reduce the lateral displacement and residual deformation of the structure, improve seismic resistance, and enhance structural stability. It is suitable for the base column foot nodes in high-rise and heavy-duty wooden structures, reducing vibration and improving bearing capacity.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120273459A_ABST
    Figure CN120273459A_ABST
Patent Text Reader

Abstract

The invention discloses an assembly type friction energy dissipation self-resetting column base joint based on a T-shaped section wooden column. The assembly type friction energy dissipation self-resetting column base joint comprises a foundation bolt, a column shoe mechanism, a resetting assembly, a friction energy dissipation mechanism and a bottom plate. The foundation bolts are fixedly arranged in the concrete foundation; the column shoe mechanism is arranged at the bottom of the T-shaped section wooden column in a sleeving mode, and the T-shaped section wooden column and the column shoe mechanism are connected and fixed through a split bolt. The reset assembly is arranged at the top end of the column shoe mechanism and arranged on the foundation bolt in a sleeving mode. The friction energy dissipation mechanisms are arranged on the two sides of a web of the T-shaped section wooden column, and the friction energy dissipation mechanisms and the T-shaped section wooden column are connected and fixed through split bolts. The bottom plate is arranged at the bottom end of the T-shaped section wooden column, the column shoe mechanism and the friction energy dissipation mechanism are both arranged at the top end of the bottom plate, and the bottom plate, the column shoe mechanism and the friction energy dissipation mechanism are all fixedly matched with a concrete foundation through foundation bolts. Lateral displacement and residual deformation of the structure can be reduced, and the structure has the advantages of being high in bearing capacity, good in anti-seismic performance, capable of reducing the vibration sense and the like.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and particularly relates to a prefabricated friction energy dissipation and self - resetting column - footing joint based on a T - shaped cross - section wooden column. Background Art

[0002] In recent years, wooden - structure buildings have become popular all over the world, and they have many advantages such as flexible design, short construction period, and easy renovation.

[0003] As a vertical load - bearing and lateral - force - bearing member in a wooden structure, a wooden column bears the brunt of absorbing seismic energy under earthquake action, and will have a large lateral displacement and residual displacement. Relying solely on its own structural strength is not enough to gain an advantage in earthquake - prone areas, and it is even more difficult for high - rise wooden structures to show their strengths. Moreover, the cross - section shapes of wooden columns applied in current wooden - structure buildings are relatively limited, mainly limited to two forms: circular columns and square columns.

[0004] Therefore, the present invention proposes a prefabricated friction energy dissipation and self - resetting column - footing joint based on a T - shaped cross - section wooden column to solve the above - mentioned technical problems existing in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide a prefabricated friction energy dissipation and self - resetting column - footing joint based on a T - shaped cross - section wooden column to solve the problems existing in the above - mentioned prior art.

[0006] To achieve the above - mentioned purpose, the present invention provides a prefabricated friction energy dissipation and self - resetting column - footing joint based on a T - shaped cross - section wooden column, including:

[0007] Anchor bolts, which are fixedly arranged in a concrete foundation;

[0008] A column - shoe mechanism, which is sleeved on the bottom of the T - shaped cross - section wooden column. Through holes are provided on both the T - shaped cross - section wooden column and the column - shoe mechanism, and the T - shaped cross - section wooden column and the column - shoe mechanism are fixedly connected by tension bolts;

[0009] A reset component, which is arranged at the top of the column - shoe mechanism and is sleeved on the anchor bolt;

[0010] A friction energy - dissipation mechanism, which is arranged on both sides of the web of the T - shaped cross - section wooden column. Through holes are provided on the friction energy - dissipation mechanism, and the friction energy - dissipation mechanism and the T - shaped cross - section wooden column are fixedly connected by tension bolts;

[0011] A bottom plate, which is arranged at the bottom end of the T - shaped cross - section wooden column. The column - shoe mechanism and the friction energy - dissipation mechanism are both arranged at the top of the bottom plate, and the bottom plate, the column - shoe mechanism, and the friction energy - dissipation mechanism are all fixedly matched with the concrete foundation through the anchor bolts.

[0012] Preferably, the column shoe mechanism includes a flange main plate and a web main plate. The flange main plate is wrapped around the flange of the T-shaped cross-section wooden column, and the web main plate is wrapped around the web of the T-shaped cross-section wooden column. Both the flange main plate and the web main plate are connected and fixed to the T-shaped cross-section wooden column by bolts; the friction energy dissipation mechanism is arranged between the flange main plate and the web main plate.

[0013] Preferably, the column shoe mechanism further includes two column shoe steel plates, which are respectively arranged between the flange main plate and the T-shaped cross-section wooden column, and between the web main plate and the T-shaped cross-section wooden column.

[0014] Preferably, the tie bolts are low-carbon alloy bolts.

[0015] Preferably, stiffening rib angle steels are fixedly arranged on both the flange main plate and the web main plate.

[0016] Preferably, the reset assembly includes disc springs respectively arranged at the tops of the flange main plate and the web main plate. The disc springs are sleeved on the anchor bolts, and the tops of the disc springs abut against nuts threadedly connected to the anchor bolts.

[0017] Preferably, the friction energy dissipation mechanism includes an L-shaped friction plate and a friction backing plate. The friction backing plate is fixedly installed on the web of the T-shaped cross-section wooden column, and the friction backing plate is arranged between the T-shaped cross-section wooden column and the L-shaped friction plate; both the L-shaped friction plate and the friction backing plate are connected and fixed to the T-shaped cross-section wooden column by the tie bolts, and the bottom end of the L-shaped friction plate is fixed to the bottom plate by the anchor bolts.

[0018] Preferably, the through-hole diameters on the T-shaped cross-section wooden column and the friction backing plate are larger than the through-hole diameters on the column shoe mechanism and the friction energy dissipation mechanism.

[0019] Preferably, the friction backing plate is bonded to the web of the T-shaped cross-section wooden column with epoxy resin glue.

[0020] Preferably, the anchor bolts are fixed in the concrete foundation by means of embedding or anchoring.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] The prefabricated friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column provided by the present invention, under earthquake action, first generates compression through the reset component to lift the column shoe mechanism to reduce the seismic action on the structure. After the earthquake, the structure self - resets under the action of vertical load and the pre - tightening force of the reset component, enabling the column shoe mechanism to better re - close after unloading, and enhancing the stability of the structure to achieve the reset mechanism. The friction energy dissipation mechanism dissipates seismic energy as a friction energy dissipation component, thereby achieving a large amount of seismic energy dissipation. The base plate, column shoe mechanism, reset component, and friction energy dissipation mechanism are all detachably connected to the T - shaped cross - section wooden column, and can be repaired and replaced by replacing damaged components or re - tightening the tension bolts after the earthquake, thereby improving the seismic performance of the wooden column.

[0023] The present invention can reduce the lateral displacement and residual deformation of the structure. Therefore, it has the advantages of high bearing capacity, good seismic performance, and reduced seismic perception, and can be applied to the column base joints of T - shaped cross - section wooden columns at the bottom of high - rise and heavy - timber structures. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a structural schematic diagram of the prefabricated friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column of the present invention;

[0026] Figure 2 It is a front view of the prefabricated friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column of the present invention;

[0027] Figure 3 It is a right - hand view of the prefabricated friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column of the present invention;

[0028] Figure 4 It is a top view of the prefabricated friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the flange main plate of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the web main plate of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the L - shaped friction plate of the present invention;

[0032] Figure 8Schematic structural diagram of the friction backing plate of the present invention;

[0033] Figure 9 Schematic structural diagram of the bottom plate of the present invention;

[0034] Figure 10 Schematic structural diagram of two column shoe steel plates of the present invention;

[0035] In the figure: 1, flange main plate; 2, web main plate; 3, L-shaped friction plate; 4, bottom plate; 5, friction backing plate; 6, column shoe steel plate; 7, disc spring; 8, anchor bolt; 9, low-carbon alloy bolt; 10, T-shaped cross-section wooden column; 11, concrete foundation; 12, stiffening rib angle steel. Specific embodiments

[0036] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] As Figures 1 to 10 shown, the present invention provides an assembled friction energy dissipation and self-resetting column foot node based on a T-shaped cross-section wooden column, including:

[0038] Anchor bolts 8, which are fixedly arranged in the concrete foundation 11;

[0039] Column shoe mechanism, which is sleeved on the bottom of the T-shaped cross-section wooden column 10. Through holes are provided on both the T-shaped cross-section wooden column 10 and the column shoe mechanism, and the T-shaped cross-section wooden column 10 and the column shoe mechanism are fixedly connected by tie bolts;

[0040] Reset assembly, which is arranged at the top of the column shoe mechanism and sleeved on the anchor bolt 8;

[0041] Friction energy dissipation mechanism, which is arranged on both sides of the web of the T-shaped cross-section wooden column 10. Through holes are provided on the friction energy dissipation mechanism, and the friction energy dissipation mechanism and the T-shaped cross-section wooden column 10 are fixedly connected by tie bolts;

[0042] Bottom plate 4, which is arranged at the bottom end of the T-shaped cross-section wooden column 10. The column shoe mechanism and the friction energy dissipation mechanism are both arranged at the top of the bottom plate 4, and the bottom plate 4, the column shoe mechanism and the friction energy dissipation mechanism are all fixedly matched with the concrete foundation 11 through the anchor bolts 8.

[0043] Under the action of an earthquake, the present invention firstly generates compression through the reset assembly to lift the column shoe mechanism to reduce the earthquake action of the structure. After the earthquake, the structure self-resets under the action of the vertical load and the pre-tightening force of the reset assembly to make the column shoe mechanism better reclosed after unloading, and enhance the stability of the structure to realize the reset mechanism. The friction energy dissipation mechanism dissipates earthquake energy as a friction energy dissipation component, thereby realizing a large amount of earthquake energy dissipation; the bottom plate 4, the column shoe mechanism, the reset assembly, and the friction energy dissipation mechanism are all detachably connected to the T-section wooden column 10, and the repair mechanism and the replacement mechanism can be realized by replacing the damaged components or re-tightening the tension bolts after the earthquake, thereby improving the earthquake resistance of the wooden column.

[0044] The present invention can reduce the lateral displacement and residual deformation of the structure, and thus has the advantages of high bearing capacity, good seismic resistance, reduced vibration, etc., and can be applied to the column foot nodes of the bottom-level T-section wooden columns 10 in high-rise wooden structures and heavy wooden structures.

[0045] A further optimized solution is provided, in which the column shoe mechanism includes a flange main plate 1 and a web main plate 2, the flange main plate 1 being covered on the flange of the T-section wooden column 10, the web main plate 2 being covered on the web of the T-section wooden column 10, the flange main plate 1 and the web main plate 2 being connected and fixed to the T-section wooden column 10 by bolts; the friction energy dissipation mechanism being arranged between the flange main plate 1 and the web main plate 2.

[0046] A further optimization scheme is to disperse the local stress at the contact point between the column shoe mechanism and the T-section wooden column 10. The column shoe mechanism also includes two column shoe steel plates 6. The two column shoe steel plates 6 are respectively arranged between the flange main plate 1 and the T-section wooden column 10 and between the web main plate 2 and the T-section wooden column 10.

[0047] According to the further optimization scheme, the tension bolts are low-carbon alloy bolts 9.

[0048] According to a further optimized solution, stiffening rib angle steels 12 are fixedly provided on both the flange main plate 1 and the web main plate 2.

[0049] According to a further optimization scheme, the reset assembly includes disc springs 7 respectively arranged on the top of the flange main plate 1 and the web main plate 2, the disc springs 7 are sleeved on the anchor bolts 8, and the tops of the disc springs 7 abut against the nuts threadedly connected to the anchor bolts 8.

[0050] A further optimized solution is provided, in which the friction energy dissipation mechanism includes an L-shaped friction plate 3 and a friction pad 5, wherein the friction pad 5 is fixedly mounted on the web of the T-section wooden column 10, and the friction pad 5 is arranged between the T-section wooden column 10 and the L-shaped friction plate 3; the L-shaped friction plate 3 and the friction pad 5 are both connected and fixed to the T-section wooden column 10 by tension bolts, and the bottom end of the L-shaped friction plate 3 is fixed to the base plate 4 by anchor bolts 8.

[0051] For a further optimized solution, to ensure relative displacement can occur between the friction pad 5 on the T-shaped cross-section wooden column 10 and the L-shaped friction plate 3, the through-hole diameters on the T-shaped cross-section wooden column 10 and the friction pad 5 are larger than those on the column shoe mechanism and the friction energy dissipation mechanism.

[0052] For a further optimized solution, the friction pad 5 is adhesively bonded to the web of the T-shaped cross-section wooden column 10 using epoxy resin glue.

[0053] For a further optimized solution, the anchor bolts 8 are fixed in the concrete foundation 11 by means of embedding or anchoring.

[0054] The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column provided by the present invention uses the L-shaped friction plate 3 and the friction pad 5 as friction energy dissipation components to dissipate seismic energy. Each component is connected in a prefabricated manner, and after an earthquake, the damaged components can be replaced or the bolts can be tightened again to achieve the repair mechanism and replacement mechanism.

[0055] Under minor earthquakes, the column base will not become disengaged from the foundation, ensuring the initial stiffness of the structure; under moderate and major earthquakes, the disc springs are compressed to lift the column base to reduce the seismic action on the structure. After the earthquake, the structure self-centers under the vertical load and the pre-tightening force of the disc springs 7, effectively avoiding the brittle cracking failure at the column base of glulam columns at the present stage, achieving minor damage to the structure under strong earthquakes. When the stiffening rib angle steel 12 bears the load, it can limit the displacement of the structure and play a role in guiding closure after unloading, thereby preventing the collapse of the structure.

[0056] The present invention effectively enhances the flexural performance of the structure through a steel-wood hybrid structure. Its steel structure can be prefabricated in the factory, is suitable for on-site assembly, and adapts to the construction period of wooden structure buildings.

[0057] The connection method of the prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column provided by the present invention includes the following steps:

[0058] S1. Anchor the anchor bolts 8 on the concrete foundation 11, pour the anchor bolts 8 and the concrete foundation 11 together on-site. After the concrete reaches its strength, connect and fix the flange main plate 1, the web main plate 2, the L-shaped friction plate 3, and the bottom plate 4 to the concrete foundation 11 through the anchor bolts 8, and install the disc springs 7 on the anchor bolts 8 passing through the flange main plate 1 and the web main plate 2.

[0059] S2. Use epoxy resin glue to adhesively bond the friction pads 5 on both sides of the web of the T-shaped cross-section wooden column 10. Place the T-shaped cross-section wooden column 10 in the middle of the flange main plate 1, the web main plate 2, and the L-shaped friction plate 3, and connect the T-shaped cross-section wooden column 10 to the column base steel structure using tie bolts through the through-holes with a diameter of 14 mm reserved on the flange main plate 1, the web main plate 2, and the L-shaped friction plate 3.

[0060] The assembled friction energy-dissipating and self-centering column base joint based on the T-shaped cross-section wooden column provided by the present invention can effectively dissipate part of the seismic energy through the flange main plate 1, the web main plate 2 and the butterfly spring rocking, and can achieve the self-centering function after unloading, reduce the lateral displacement and residual deformation of the structure. The L-shaped friction plate 3 and the friction backing plate 5 are used as friction energy-dissipating components to dissipate the seismic energy, improve the energy-dissipating capacity of the joint, limit the displacement of the structure during loading, and play a role in guiding closure after unloading, effectively reducing the lateral displacement, residual deformation and seismic damage of the wooden structure building. This joint meets the requirements of prefabrication, has less on-site construction work, and is suitable for the construction period of wooden structure buildings.

[0061] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. An assembled friction energy dissipation and self - resetting column base joint based on a T - shaped cross - section wooden column, characterized in that, Comprising: Anchor bolts (8), which are fixedly arranged in the concrete foundation (11); Column shoe mechanism, which is sleeved on the bottom of the wooden column (10) with a T-shaped cross-section. Through holes are provided on both the wooden column (10) with a T-shaped cross-section and the column shoe mechanism, and the wooden column (10) with a T-shaped cross-section and the column shoe mechanism are fixedly connected by tension bolts; Reset component, which is arranged at the top end of the column shoe mechanism and is sleeved on the anchor bolt (8); Friction energy dissipation mechanism, which is arranged on both sides of the web of the wooden column (10) with a T-shaped cross-section. A through hole is provided on the friction energy dissipation mechanism, and the friction energy dissipation mechanism and the wooden column (10) with a T-shaped cross-section are fixedly connected by tension bolts; Base plate (4), which is arranged at the bottom end of the wooden column (10) with a T-shaped cross-section. The column shoe mechanism and the friction energy dissipation mechanism are both arranged at the top end of the base plate (4), and the base plate (4), the column shoe mechanism, and the friction energy dissipation mechanism are all fixedly matched with the concrete foundation (11) through the anchor bolt (8).

2. The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column according to claim 1, characterized in that, The column shoe mechanism includes a flange main plate (1) and a web main plate (2). The flange main plate (1) covers the flange of the wooden column (10) with a T-shaped cross-section, and the web main plate (2) covers the web of the wooden column (10) with a T-shaped cross-section. The flange main plate (1) and the web main plate (2) are both fixedly connected to the wooden column (10) with a T-shaped cross-section by bolts; the friction energy dissipation mechanism is arranged between the flange main plate (1) and the web main plate (2).

3. The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column according to claim 2, wherein, The column shoe mechanism further includes two column shoe steel plates (6), which are respectively arranged between the flange main plate (1) and the wooden column (10) with a T-shaped cross-section, and between the web main plate (2) and the wooden column (10) with a T-shaped cross-section.

4. The prefabricated friction energy dissipation and self-centering column base joint based on a T-shaped cross-section wooden column according to claim 2, wherein The tension bolt is a low-carbon alloy bolt (9).

5. The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column according to claim 2, wherein, Stiffening angle steels (12) are fixedly arranged on both the flange main plate (1) and the web main plate (2).

6. The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column according to claim 2, wherein, The reset component includes disc springs (7) respectively arranged at the top ends of the flange main plate (1) and the web main plate (2). The disc springs (7) are sleeved on the anchor bolt (8), and the top ends of the disc springs (7) are abutted against nuts threadedly connected to the anchor bolt (8).

7. The prefabricated friction energy dissipation and self-centering column base joint based on a T-shaped cross-section wooden column according to claim 1, wherein, The friction energy dissipation mechanism includes an L-shaped friction plate (3) and a friction backing plate (5). The friction backing plate (5) is fixedly installed on the web of the wooden column (10) with a T-shaped cross-section, and the friction backing plate (5) is arranged between the wooden column (10) with a T-shaped cross-section and the L-shaped friction plate (3); the L-shaped friction plate (3) and the friction backing plate (5) are both fixedly connected to the wooden column (10) with a T-shaped cross-section by the tension bolts, and the bottom end of the L-shaped friction plate (3) is fixed on the base plate (4) through the anchor bolt (8).

8. The prefabricated friction energy dissipation and self-centering column base joint based on the T-shaped cross-section wooden column according to claim 7, characterized in that, The through-hole diameters on the T-shaped cross-section wooden column (10) and the friction pad (5) are larger than those on the column shoe mechanism and the friction energy dissipation mechanism.

9. The prefabricated friction energy dissipation and self-centering column base joint based on a T-shaped cross-section wooden column according to claim 7, characterized in that, The friction pad (5) is adhesively bonded to the web of the T-shaped cross-section wooden column (10) using epoxy resin glue.

10. The prefabricated friction energy dissipation and self-centering column base joint based on a T-shaped cross-section wooden column according to claim 1, characterized in that, The anchor bolts (8) are fixed in the concrete foundation (11) by means of pre-embedding or anchoring.