A vertical green connection and reinforcement structure for wooden pillars and load-bearing walls

Abstract

This utility model provides a vertical green connection and reinforcement structure for wooden columns and load-bearing walls, relating to the field of building structure reinforcement technology. It includes: a square tube fitted around the bottom perimeter of the wooden column; a steel plate installed at the front and rear of the structural column, with bolts passing through mounting holes and bolt openings and tightened to firmly connect the steel plates to the load-bearing brick wall and structural column; and three steel bars welded to each of the two steel plates and the square tube. This utility model, through a rigid force transmission system of "wooden column-square tube-steel bar-steel plate-masonry structure," accurately transfers the horizontal load borne by the wooden column to the load-bearing brick wall and structural column, effectively constraining the horizontal direction of the wooden column base. This solves the problem of the traditional connection method where wooden columns are directly erected on the surface of precast hollow floor slabs, which, due to the lack of dedicated force transmission nodes and reinforcement structures, poses a safety hazard of overturning due to the lack of effective horizontal constraint.

Description

Technical Field

[0001] This utility model relates to the field of building structure reinforcement technology, and in particular to a vertical green connection reinforcement structure between wooden columns and load-bearing walls. Background Technology

[0002] In traditional building structural systems, the connection between wooden columns and masonry structures (such as load-bearing brick walls) often adopts a simple method of "directly erecting wooden columns on the surface of precast hollow floor slabs" (as shown in the instruction manual). Figure 4 As shown in the image, this connection method lacks dedicated force transmission nodes and reinforcement structures, resulting in significant structural defects and safety hazards. Specific issues are as follows: Unrestrained horizontal direction of wooden columns: The vertical load of the wooden columns is directly applied to a local area of ​​the precast hollow floor slab, while the connection between the floor slab and the load-bearing brick wall relies only on its own weight and mortar bonding, lacking rigid load-transfer components. When the wooden columns bear large horizontal loads (such as wind loads and seismic loads), the load cannot be accurately transferred to the load-bearing brick wall and structural columns. The lack of effective horizontal restraint leads to the overturning of the wooden columns. Traditional reinforcement methods often require destructive modifications to the original precast hollow floor slabs, such as chiseling and installing rebar, to improve connection reliability. This not only generates a large amount of construction dust and waste, polluting the construction environment, but may also cause secondary damage to the original structure. In addition, temporary support systems need to be built during construction, which takes up a lot of space, has a long construction period, and results in serious material waste, which is contrary to the current trend of "low-carbon, environmentally friendly, and sustainable" green building development. Utility Model Content

[0003] This utility model relates to a vertical green connection and reinforcement structure for wooden columns and load-bearing walls. It solves the problem that in traditional buildings, wooden columns are directly erected on the surface of precast hollow floor slabs. Due to the lack of dedicated force transmission nodes and reinforcement structures, there is a safety hazard of wooden columns overturning because there is no effective horizontal restraint. Traditional reinforcement methods require destructive modifications to the original floor slabs, which can easily pollute the environment, damage the original structure, and contradict the trend of green building.

[0004] This utility model provides a vertical green connection and reinforcement structure for wooden columns and load-bearing walls, specifically including: load-bearing brick walls, precast hollow floor slabs, wooden columns, and square tubes. Structural columns are arranged at intervals along the longitudinal direction of the load-bearing brick walls, and are embedded in the joints between adjacent load-bearing brick walls. The top surface of the structural columns is flush with the top surface of the load-bearing brick walls, forming a horizontal load-bearing reference plane. The precast hollow floor slab is laid entirely on the top surface of the load-bearing brick walls and structural columns. The wooden columns are vertically positioned on the top surface of the precast hollow floor slab, with their axis coinciding with the center of the structural columns below. The square tube is fitted around the bottom perimeter of the wooden column, with a uniform gap reserved between the inner wall of the square tube and the outer wall of the wooden column, which is filled with grout. A steel plate is installed at the front and rear of the structural column, and the steel plate is attached to the surface of the load-bearing brick wall. Six mounting holes are pre-drilled evenly distributed on the steel plate, and bolt holes are drilled on the load-bearing brick wall and structural column corresponding to the mounting hole positions. The bolts are tightened after passing through the mounting holes and bolt holes to firmly connect the steel plate to the load-bearing brick wall and structural column. The two steel plates are connected to the square tube by welding three steel bars.

[0005] Furthermore, the square tube is made of four thick steel plates of the same specifications, which are arranged in a ring array. The sides of adjacent thick steel plates are perpendicularly attached, and the joints are connected by welding.

[0006] Furthermore, a row of carbon fiber reinforcement layers is evenly distributed and wrapped around the outer periphery of the wooden column adjacent to the upper part of the square tube.

[0007] Furthermore, the precast hollow floor slab has a steel bar opening along the installation path of the steel bar. One end of the steel bar passes through the steel bar opening and is welded to the steel plate, while the other end passes through the steel bar opening and is welded to the outer wall of the square tube.

[0008] This utility model provides a vertical green connection and reinforcement structure for wooden columns and load-bearing walls, which has the following beneficial effects: This utility model utilizes a rigid force transmission system consisting of "wooden column-square tube-reinforcing bar-steel plate-masonry structure" to precisely transfer the horizontal load borne by the wooden column to the load-bearing brick wall and structural column. It effectively constrains the horizontal direction of the wooden column base, solving the problem of the safety hazard of wooden columns overturning due to the lack of effective horizontal constraint caused by the direct erection of wooden columns on the surface of precast hollow floor slabs in traditional buildings, which lacks dedicated force transmission nodes and reinforcement structures. This significantly improves the overall load-bearing stability of the structure. Moreover, this utility model eliminates the need for chiseling or rebar installation on the precast hollow floor slabs, achieving force transmission connection simply by opening small rebar holes in the floor slab. This maximizes the protection of the original structural integrity, reduces secondary damage, and avoids the generation of large amounts of construction dust and waste, thus reducing pollution to the construction environment.

[0009] This invention utilizes grouting to fill the gap between the square tube and the wooden column, achieving a rigid connection between them. Combined with the bolt fastening of the steel plate to the structural column and the welding connection of the reinforcing bars to the square tube and steel plate, a high-strength joint is formed. This joint can effectively resist horizontal seismic forces or lateral loads, reduce structural displacement, and lower the risk of collapse. Furthermore, the square tube around the bottom of the wooden column can isolate it from humid environments and insect infestation, reducing the risk of decay. The carbon fiber reinforcement layer above the square tube forms a ring constraint, which can suppress the lateral expansion of the wooden column caused by vertical compression, while preventing the expansion of cracks caused by shrinkage and swelling, avoiding brittle fracture of the wooden column, and significantly extending the service life of the wooden column.

[0010] The structural columns, steel plates, reinforcing bars, carbon fiber, and other materials used in this invention are all conventional building materials with low cost. No special equipment is required, which eliminates the need for temporary support systems during construction, simplifies the construction process, and significantly shortens the construction period. The carbon fiber reinforcement layer is easy to construct, highly durable, and reduces later maintenance costs, which is in line with the green building development trend of "low carbon, environmental protection, and sustainability". Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0012] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0013] In the attached diagram: Figure 1 A schematic diagram of the main structure of this utility model is shown; Figure 2 This diagram shows a cross-sectional view of the square tube of this invention. Figure 3 A top view of the present invention is shown; Figure 4 This diagram illustrates a conventional technique for reinforcing load-bearing walls with wooden columns. List of reference numerals 1. Load-bearing brick wall; 2. Precast hollow floor slab; 3. Wooden column; 4. Structural column; 5. Steel plate; 6. Bolt; 7. Square tube; 8. Reinforcing bar; 9. Carbon fiber reinforcement layer. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Example: Please refer to Figures 1 to 3 : This utility model proposes a vertical green connection and reinforcement structure for wooden columns and load-bearing walls, comprising: a load-bearing brick wall 1, a precast hollow floor slab 2, wooden columns 3, and square tubes 7. Structural columns 4 are arranged longitudinally along the load-bearing brick wall 1 at intervals, and are embedded in the joints between adjacent load-bearing brick wall 1 sections. The top surface of the structural columns 4 is flush with the top surface of the load-bearing brick wall 1, forming a horizontal load-bearing reference surface. The precast hollow floor slab 2 is laid entirely on the top surface of the load-bearing brick wall 1 and the structural columns 4. The wooden columns 3 are vertically positioned on the top surface of the precast hollow floor slab 2, with their axis coinciding with the center of the structural columns 4 below. The square tubes 7 are fitted around the bottom periphery of the wooden columns 3, with a uniform gap reserved between the inner wall of the square tube 7 and the outer wall of the wooden column 3. The gap is filled with grout to achieve a rigid connection between the wooden columns 3 and the square tubes 7, thereby increasing the number of wooden columns 3. The square tube 7 is designed to enhance the load-bearing capacity and distribute the load evenly to the outer wall of the square tube 7, preventing splitting or deformation of the wooden column 3 due to local stress concentration at the base. The square tube 7 is composed of four thick steel plates of the same specifications, arranged in a ring array. The sides of adjacent thick steel plates are perpendicularly attached, and the joints are connected by welding. A steel plate 5 is installed in front of and behind the structural column 4, and the steel plate 5 is attached to the wall surface of the load-bearing brick wall 1. Six mounting holes are pre-drilled evenly on the steel plate 5. Bolt holes are drilled on the load-bearing brick wall 1 and the structural column 4 at the corresponding mounting hole positions. The bolts 6 are tightened after passing through the mounting holes and bolt holes, so that the steel plate 5 is firmly connected to the load-bearing brick wall 1 and the structural column 4. The two steel plates 5 are connected to the square tube 7 by three steel bars 8, forming a rigid force transmission node between the steel plate 5 and the square tube 7.

[0016] Among them, a row of carbon fiber reinforcement layers 9 is evenly distributed and wrapped around the outer periphery of the wooden column 3 adjacent to the upper part of the square tube 7, forming a ring reinforcement system. When the wooden column 3 is subjected to vertical load or horizontal seismic action, the carbon fiber reinforcement layer 9 can provide circumferential tensile force, suppress the lateral expansion of the wooden column 3 caused by vertical compression, and at the same time reduce the expansion of cracks caused by dry shrinkage and wet expansion of the wooden column 3, avoid brittle fracture of the wooden column 3, and improve the seismic performance of the structure.

[0017] The precast hollow floor slab 2 has a rebar opening corresponding to the installation path of the rebar 8. One end of the rebar 8 is inserted through the rebar opening and welded to the steel plate 5, and the other end is inserted through the rebar opening and welded to the outer wall of the square tube 7, forming a force transmission connection that runs through the precast hollow floor slab 2. This ensures that the load of the wooden column 3 can be stably transferred to the load-bearing brick wall 1 during the construction stage, without the need to build an additional support system, reducing the interference of construction on the original structure, and reducing dust pollution, which meets the requirements of green construction.

Claims

1. A vertical green connection reinforcement structure of a timber column and a load-bearing wall, characterized in that, include: A load-bearing brick wall (1), a precast hollow floor slab (2), wooden columns (3), and square tubes (7) are arranged. Structural columns (4) are arranged at intervals along the longitudinal direction of the load-bearing brick wall (1). The structural columns (4) are embedded at the joints of two adjacent load-bearing brick walls (1). The top surface of the structural columns (4) is flush with the top surface of the load-bearing brick wall (1) to form a horizontal load-bearing reference surface. The precast hollow floor slab (2) is laid on the top surface of the load-bearing brick wall (1) and the structural columns (4). The wooden columns (3) are vertically set on the top surface of the precast hollow floor slab (2), and their axis coincides with the center of the structural column (4) below. The square tubes (7) are fitted at the bottom of the wooden columns (3). On the periphery, a uniform gap is reserved between the inner wall of the square tube (7) and the outer wall of the wooden column (3), and the gap is filled with grout. A steel plate (5) is set in front of and behind the structural column (4), and the steel plate (5) is attached to the wall surface of the load-bearing brick wall (1). Six mounting holes are pre-set on the steel plate (5) in a uniform distribution. Bolt holes are drilled on the load-bearing brick wall (1) and the structural column (4) corresponding to the mounting hole positions. After the bolt (6) passes through the mounting hole and the bolt hole, it is tightened to make the steel plate (5) firmly connected to the load-bearing brick wall (1) and the structural column (4). The two steel plates (5) are welded to the square tube (7) by three steel bars (8).

2. The vertical green connection reinforcing structure of timber column and load-bearing wall according to claim 1, characterized in that, The square tube (7) is made of four thick steel plates of the same specifications. The four thick steel plates are arranged in a ring array. The sides of adjacent thick steel plates are perpendicularly attached and connected by welding.

3. The vertical green connection reinforcing structure of claim 1, wherein, The outer periphery of the wooden column (3) is evenly wrapped with a row of carbon fiber reinforcement layers (9) above the square tube (7).

4. The vertical green connection reinforcing structure of claim 1, wherein, The precast hollow floor slab (2) has a steel bar opening on the installation path of the steel bar (8). One end of the steel bar (8) is inserted through the steel bar opening and then welded to the steel plate (5), and the other end is inserted through the steel bar opening and welded to the outer wall of the square tube (7).

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