Steel-wood column foot waterproof joint structure capable of being repeatedly disassembled and assembled

Abstract

The utility model discloses a steel-wood column foot waterproof joint structure capable of being repeatedly disassembled and assembled. The steel-wood column foot waterproof joint structure capable of being repeatedly disassembled and assembled comprises a wood column, a column foot and a concrete foundation. The wooden column is detachably connected with one end of the column foot, a waterproof cover plate is arranged on the outer side of the column foot and adheres to a connecting seam of the column foot to prevent water, the other end of the column foot is detachably connected with a concrete foundation, and the column foot can preserve heat. According to the steel-wood column foot waterproof joint structure capable of being repeatedly disassembled and assembled, a detachable connecting mode is adopted, so that the joint structure has the characteristic of being repeatedly disassembled and assembled, the gap of the joint structure of the steel-wood column foot joint applied to an outer wall is filled, and the problems of weak heat preservation and water resistance of a steel connecting piece are solved by filling an inorganic heat preservation material and a waterproof daub material. Moreover, the wooden column can be effectively far away from water vapor on the ground due to the lifting of the column foot, and the wooden column is further prevented from being eroded by splashed rainwater due to the arrangement of the waterproof cover plate, so that the service life of the wooden column structure is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wooden structure buildings, and more specifically, to a waterproof joint structure of a steel-wood column base that can be repeatedly disassembled and assembled. Background Art

[0002] Wood is a natural carbon storage material. As long as wood products are in use, the carbon fixed in them is basically no longer released and exists in the form of a carbon storage pool. This property does not require additional energy maintenance and economic investment. Therefore, wood is an efficient and inexpensive carbon sequestration body. In construction, if 1 m 3 of wood is used instead of 1 m 3 of other building materials (concrete, stone or brick), on average, it can reduce the emission of 0.7 t to 1.1 t of CO2. Glulam or dimension lumber in prefabricated modern wooden structure buildings has the advantages of being repeatedly disassembled and assembled and being transferable. Wood itself is degradable, which further reduces the impact of construction waste on the environment after building demolition.

[0003] Moreover, modern wooden structure buildings have the following advantages: ① High strength: The strength of glulam can rival that of steel and concrete and can bear large loads and stresses. ② Good stability: Since glulam is formed by bonding multiple layers of wood in a staggered manner, it has good dimensional stability and is not prone to warping, deformation and cracking. ③ Customizability: Glulam can be made into various shapes and sizes according to needs to meet the requirements of different building designs. ④ Renewable resources: Glulam uses renewable wood resources and has low carbon emissions during the production process, making it an environmentally friendly building material. ⑤ Carbon storage: Wood can store carbon dioxide for a long time, and using glulam buildings helps reduce the carbon dioxide content in the atmosphere and mitigate climate change. ⑥ Prefabricated components: Glulam components are usually prefabricated in factories and then transported to the construction site for assembly. This method can improve construction efficiency and reduce on-site construction time. ⑦ Lightweight: Glulam is lighter than traditional reinforced concrete, reducing the requirements for infrastructure and lowering the construction difficulty and cost.

[0004] Therefore, modern wooden structures are widely used in low-rise or multi-story building structures. In modern wooden structure buildings, the column base usually plays a crucial connecting role. The connection part between the wooden structure and the concrete foundation is usually called the column base. In wooden structure buildings, the column base not only needs to fix the wooden structure columns on the foundation, but also needs to transfer and disperse the loads borne by the columns to the ground, and at the same time play a role in preventing the wood from being damaged by environmental factors such as moisture and pests.

[0005] Therefore, according to the national building standard design atlas "Wood Structure Buildings" (14J924), the reference practice for the connection structure between commonly used glued laminated wood columns and the foundation in China is as follows: At the lower part of the wood column, metal anchor fittings or connectors are used to connect with the bearing plate, and then anchor bolts are used to fix the bearing plate on the concrete foundation. The column directly rests on the foundation through the bearing plate. On the one hand, the bearing plate plays a role in transferring the load of the column, and on the other hand, it plays a role in isolating the water vapor of the concrete foundation to prevent the water vapor from invading the wood column and causing decay, which affects the mechanical properties of the wood column. However, in this implementation plan, there are the following disadvantages: ① Poor waterproof performance. The wood column is directly placed on the column base through the bearing plate, and it is impossible to effectively avoid rainwater splashing on the wood column and the water vapor in the concrete invading the glued laminated wood column; ② It cannot be disassembled, reinstalled, and reused. The glued laminated wood column is directly welded to the foundation embedded parts through the load-bearing steel sheet, etc.

[0006] In foreign countries, it is usually different from the form of the column foot landing in the domestic atlas. The connection parts of the column feet of foreign glued laminated wood buildings have more diverse shapes, including but not limited to the shapes of straight bars, I-beams, cross shapes, supports, etc. Due to the use of shaped connection parts, the following two common forms are often used for the combination of the outer ring columns and the exterior wall in the foreign column foot practice to avoid the difficulty of dealing with the node structure at the connection between the column foot and the exterior wall: One is that the column is located inside the exterior wall, and the other is that the column is located outside the exterior wall. There are common defects in the foreign column foot design schemes: The connection method between the column foot and the foundation is given, but the connection method at the node between the column foot and the exterior wall is not clear, and it can only be applied to independent columns, and it cannot solve the waterproofing, heat preservation, and steam exhaust difficulties at the connection between the wood exterior wall and the wood column.

[0007] Therefore, there is an urgent need for a waterproof node structure of a steel-wood column foot that can be disassembled, reinstalled, and reused to fill the gap in the node structure of the steel-wood column foot applied to the exterior wall, and to solve the problems of poor waterproof performance, difficulty in disassembly, reinstallation, and reuse of the existing steel-wood column foot, and poor heat preservation effect of the steel structure connection parts. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide a waterproof node structure of a steel-wood column foot that can be disassembled, reinstalled, and reused. The waterproof node structure of the steel-wood column foot provided by the present utility model fills the gap in the node structure of the steel-wood column foot applied to the exterior wall, and solves the problems of poor waterproof performance, difficulty in disassembly, reinstallation, and reuse of the existing steel-wood column foot, and poor heat preservation effect of the steel structure connection parts.

[0009] To achieve the above purpose, the technical solution of the present utility model is as follows:

[0010] A waterproof node structure of a steel-wood column foot that can be disassembled, reinstalled, and reused, and the waterproof node structure of the steel-wood column foot includes: a wood column, a column foot, and a concrete foundation;

[0011] The wooden column is detachably connected to one end of the column base. A waterproof cover plate is arranged on the outer side of the column base. The waterproof cover plate is bonded to the connection seam of the column base to prevent water. The other end of the column base is detachably connected to the concrete foundation and the column base can keep warm.

[0012] Preferably, the column base includes a housing, a support body, a heat preservation block and a waterproof mastic layer;

[0013] One end of the support body is detachably connected to the column base, the other end of the support body is detachably connected to the concrete foundation. An installation cavity is arranged between the support body and the housing. The heat preservation block is arranged in the installation cavity. The waterproof mastic layer is arranged at the bottom of the heat preservation block. The bottom of the waterproof mastic layer abuts against the support body, and the top of the heat preservation block abuts against the support body.

[0014] Preferably, the support body includes a top plate, a bottom plate and two load-bearing plates arranged perpendicular to each other;

[0015] The top plate, the bottom plate and the load-bearing plates are integrally formed. A plurality of connecting bolts are symmetrically arranged at the center of the top plate. The connecting bolts are all bolted to the wooden column and the wooden column abuts against the top plate. Fasteners are arranged on the bottom plate. The fasteners are detachably connected to the concrete foundation and the bottom plate can abut against the concrete foundation. The top plate and the bottom plate both abut against the housing.

[0016] Preferably, the concrete foundation includes embedded bolts and post-cast concrete;

[0017] The embedded bolts are pre-embedded in the post-cast concrete. The embedded bolts pass through the bottom plate to connect the fasteners.

[0018] Preferably, the housing includes multiple steel plates. The steel plates are all detachably connected to the wall surface and the inner walls of the steel plates abut against the heat preservation block.

[0019] Preferably, a waterproof plate is further arranged at the connection gap between the steel plate and the wall surface to cover the gap for waterproofing and heat preservation.

[0020] Preferably, the waterproof joint structure of the reusable steel-wood column base further includes a shear resistance assembly. The shear resistance assembly is arranged on the column base and the wooden column to share the shear force.

[0021] Preferably, the shear resistance assembly includes a shear key and a shear slot. The shear key is arranged on the column base. The shear slot is correspondingly arranged on the wooden column for the shear key. The shear key can be clamped in the shear slot.

[0022] Preferably, the waterproof joint structure of the reusable steel-wood column base further includes an outer thermal insulation layer, which is arranged outside the housing and connected to the column base.

[0023] Preferably, the outer thermal insulation layer includes a skirting board and thermal insulation materials. One end of the skirting board is connected to the wooden column, the other end of the skirting board is connected to the concrete foundation, and the thermal insulation materials are filled between the skirting board and the column base.

[0024] The beneficial effects of the present utility model are as follows:

[0025] The waterproof joint structure of the reusable steel-wood column base adopts a detachable connection method, making the joint structure have the characteristics of being reusable and disassembled, filling the gap in the joint structure of steel-wood column bases used in exterior walls. By filling inorganic thermal insulation materials and waterproof mastic materials, the problems of weak thermal insulation and waterproofing at the steel structure connectors are solved, and it can be widely used in wooden structure buildings.

[0026] And the waterproof joint structure of the steel-wood column base also has the following advantages:

[0027] (1) The waterproof joint structure of the reusable steel-wood column base raises the wooden column through the column base arranged between the wooden column and the concrete foundation, avoiding the decay of the wooden column caused by rain, moisture, etc. The raised wooden column can effectively keep away from the water vapor on the ground, and the waterproof cover plate arranged outside the connection of the column base further prevents the splashed rainwater or stagnant rainwater from eroding the wooden column, making the surrounding of the wooden column drier and effectively extending the service life of the wooden column structure.

[0028] (2) Through the setting of the thermal insulation block between the column base and the housing in the column base, the heat loss caused by the thermal bridge effect at the connection of the waterproof joint structure of the steel-wood column base can be effectively reduced, filling the thermal insulation gap in the existing connection structure.

[0029] (3) The waterproof joint structure of the reusable steel-wood column base effectively prevents the vertical and horizontal displacement and crosstalk of the connection node between the wooden column and the column base through the setting of the shear-resistant component, improving the seismic performance of traditional wooden structure buildings. And the production and construction of the shear-resistant component are convenient and fast, facilitating installation and disassembly while ensuring the service life of the joint. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the waterproof joint structure of the reusable steel-wood column base of the present utility model;

[0031] Figure 2 is the cross-sectional structural schematic diagram of the waterproof joint structure of the reusable steel-wood column base of the present utility model;

[0032] Figure 3It is a perspective view of the waterproof joint structure of the steel-wood column base that can be disassembled and reassembled in the present utility model.

[0033] Explanation of reference numerals:

[0034] 1. Concrete foundation; 2. Post-cast concrete; 3. Embedded bolts; 4. Fasteners; 5. Waterproof cover plate; 6. Support main body; 7. Connecting bolts; 8. Waterproof mastic layer; 9. Thermal insulation block; 10. Steel plate; 11. Shear key; 12. Shear groove; 13. Wooden column; 14. Polyurethane waterproof coating; 15. Baseboard. Detailed implementation manners

[0035] Many specific details are set forth in the following description in order to provide a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementations disclosed below.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0038] As Figure 1 and Figure 2 shown, a waterproof joint structure of a steel-wood column base that can be disassembled and reassembled, the waterproof joint structure of the steel-wood column base that can be disassembled and reassembled includes: a wooden column 13, a column base, and a concrete foundation 1; one end of the wooden column 13 is detachably connected to the column base, a waterproof cover plate 5 is arranged on the outer side of the column base, and the waterproof cover plate 5 is bonded to the connection seam of the column base to prevent water leakage, and the other end of the column base is detachably connected to the concrete foundation 1 and the column base can be thermally insulated.

[0039] In this embodiment, the detachable steel-wood column base waterproof joint structure raises the wooden column 13 by means of the column base disposed between the wooden column 13 and the concrete foundation 1. The wooden column 13 is raised by 200-300 mm by the column base, thus effectively preventing the wooden column 13 from rotting due to being invaded by rainwater, moisture, etc. The raised wooden column 13 can effectively keep away from the water vapor on the ground, avoiding the erosion of the splashed or stagnant rainwater on the wooden column 13, making the surrounding of the wooden column 13 drier and effectively extending the service life of the wooden column 13. And a waterproof cover plate 5 is arranged on the outer side of the connection of the column base, which further avoids the formation of a weak point of water leakage at the connection. It can not only effectively prevent rainwater from invading through the connection, but also cover the connection seams between the column base and the wall surface, the column base and the wooden column 13, etc., further beautifying the waterproof joint of the steel-wood column 13 foot and making its shape beautiful. In a preferred embodiment, the waterproof cover plate 5 is preferably a Z-shaped aluminum single plate. The outer wall side of the Z-shaped aluminum single plate against the concrete wall is nailed to the outer wall base layer of the concrete wall, and the inner side of the Z-shaped aluminum single plate is fixedly connected to the column base by bonding. Further, the wooden column 13, the column base and the concrete foundation 1 are connected one by one through a detachable connection method, so that the steel-wood column 13 foot waterproof joint structure can achieve the purpose of repeated disassembly and utilization of the whole joint, which more conforms to the standards of green ecological buildings.

[0040] See Figure 1 and Figure 2 , the column base includes a shell, a support main body 6, a heat preservation block 9 and a waterproof mastic layer 8; one end of the support main body 6 is detachably connected to the column base, the other end of the support main body 6 is detachably connected to the concrete foundation 1, an installation cavity is arranged between the support main body 6 and the shell, the heat preservation block 9 is arranged in the installation cavity, a waterproof mastic layer 8 is arranged at the bottom of the heat preservation block 9, and the bottom of the waterproof mastic layer 8 abuts against the support main body 6. The support main body 6 includes a top plate, a bottom plate and two load-bearing plates arranged perpendicular to each other; the top plate, the bottom plate and the load-bearing plates are integrally formed, a plurality of connecting bolts 7 are symmetrically arranged at the center of the top plate, the connecting bolts 7 are all bolt-connected to the wooden column 13 and the wooden column 13 abuts against the top plate, fasteners 4 are arranged on the bottom plate, the fasteners 4 are detachably connected to the concrete foundation 1 and the bottom plate can abut against the concrete foundation 1, and the top plate and the bottom plate both abut against the shell. The shell includes a plurality of steel plates 10, the steel plates 10 are all detachably connected to the wall surface and the inner wall of the steel plates 10 abuts against the heat preservation block 9. A waterproof cover plate 5 is also arranged at the connection gap between the steel plates 10 and the wall surface to cover the joint for waterproofing and heat preservation.

[0041] In this embodiment, the heat preservation block 9 is located in the gap between the column base and the housing. Through the arrangement of the heat preservation block 9 between the column base and the housing, the steel-wood column 13 foot waterproof joint structure can effectively reduce the heat loss caused by the thermal bridge effect at the joint, filling the heat preservation loopholes in the existing connection structure and avoiding the thermal bridge effect. Moreover, by arranging the heat preservation block 9 on the waterproof mastic layer 8, and the waterproof mastic layer 8 is arranged on the bottom plate of the column base, the height of the heat preservation block 9 is further increased, avoiding the formation of weak points of water leakage and seepage between the heat preservation block 9 and the bottom plate of the column base. The integrally formed load-bearing plates symmetrically arranged vertically not only enable the structure of the column base to avoid the problem of eccentric force at the connection node, but also leave enough gaps between components to ensure the ventilation and dryness of the components. Further, the bottom plate and the top plate integrally formed at both ends of the load-bearing plate enable the glued laminated wood column 13 and the concrete foundation 1 to be connected to the load-bearing plate through flat metal plate members, increasing the force-bearing area of the connection, reducing the force-bearing intensity at the end, and reducing the risk of cross-grain tension of the components. Moreover, the setting of the connecting bolts 7 on the top plate enables the column base to be detachably connected to the column base, thus realizing the repeated recycling of the column base and the glued laminated wood column 13.

[0042] As Figure 3 shown, in a preferred embodiment, the heat preservation block 9 is preferably an inorganic heat preservation material with Class A fire performance and a thermal conductivity of 0.07 W / m﹒K. Moreover, an anti-corrosion coating is sprayed on the surface of the steel plate 10 forming the housing, and the coating of the anti-corrosion coating is preferably fluorocarbon coating to prevent the column base exposed to the outside from being corroded. The above-mentioned steel plate 10 forming the housing is preferably 1.5 mm thick galvanized steel plate 10. To avoid the formation of water leakage weak points at the steel structure connecting parts, the connection between the column base and the wooden column 13 is filled with waterproof mastic, and polyurethane waterproof coating 14 is sprayed on the outer surface of the column base to further prevent water erosion, with a 2% outward slope, and the outside is covered with Z-shaped aluminum single plates at the joints. On the basis of ensuring the beautiful appearance, it can effectively prevent rainwater from invading and drain the water vapor in time.

[0043] As Figure 1 shown, the concrete foundation 1 includes embedded bolts 3 and post-cast concrete 2; the embedded bolts 3 are embedded in the post-cast concrete 2, and the embedded bolts 3 pass through the bottom plate to connect the fasteners 4. In this embodiment, a plurality of embedded bolts 3 are embedded in the concrete foundation 1, and the concrete foundation 1 and the column base are detachably connected through the fasteners 4 on the bottom plate. The fasteners 4 on the bottom plate are preferably nuts matching the embedded bolts 3.

[0044] In a preferred embodiment, the waterproof joint structure of the reusable steel-wood column base further includes a shear resistance component, which is arranged on the column base and the wooden column 13 to share the shear force. The shear resistance component includes a shear key 11 and a shear slot 12. The shear key 11 is arranged on the column base, and the shear slot 12 corresponding to the shear key 11 is arranged on the wooden column 13. The shear key 11 can be clamped in the shear slot 12. In this embodiment, the arrangement of the shear resistance component effectively prevents the vertical and horizontal displacements of the connection node between the wooden column 13 and the column base, improves the seismic performance of traditional wooden structure buildings, and the production and construction of this shear resistance component are convenient and fast. It is easy to install and disassemble, and at the same time ensures the service life of this joint.

[0045] Furthermore, the waterproof joint structure of the reusable steel-wood column base further includes an outer thermal insulation layer, which is arranged outside the housing and connected to the column base. The outer thermal insulation layer includes a skirting board 15 and thermal insulation materials. One end of the skirting board 15 is connected to the wooden column 13, the other end of the skirting board 15 is connected to the concrete foundation 1, and thermal insulation materials are filled between the skirting board 15 and the column base. In this embodiment, through the arrangement of the outer thermal insulation layer, thermal insulation materials are further filled between the steel plate 10 of the housing and the skirting board 15, further filling the thermal insulation gap of the column base joint and effectively avoiding the thermal bridge effect.

[0046] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0047] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A removable and detachable waterproof joint structure for steel-wood column foot, characterized in that: The removable and reassembleable steel-wood column foot waterproof node structure comprises: a wooden column, a column foot and a concrete foundation; The wooden column is detachably connected to one end of the column foot, a waterproof cover plate is arranged on the outside of the column foot, the waterproof cover plate is bonded to the connection seam of the column foot for waterproofing, the other end of the column foot is detachably connected to the concrete foundation and the column foot can be insulated.

2. The removable and detachable waterproof joint structure of steel-wood column base according to claim 1 is characterized in that: The column foot comprises a shell, a supporting body, a heat-insulating block and a waterproof mastic layer; One end of the support body is detachably connected to the column foot, and the other end of the support body is detachably connected to the concrete foundation. An installation cavity is provided between the support body and the shell, and the insulation block is provided in the installation cavity. The bottom of the insulation block is provided with the waterproof mastic layer, the bottom of the waterproof mastic layer abuts against the support body, and the top of the insulation block abuts against the support body.

3. The removable and detachable waterproof joint structure of steel-wood column base according to claim 2 is characterized in that: The supporting body comprises a top plate, a bottom plate and two load-bearing plates arranged perpendicular to each other; The top plate, bottom plate and load-bearing plate are all integrally formed, a plurality of connecting bolts are centrally symmetrically arranged on the top plate, the connecting bolts are all connected to the wooden column bolts and the wooden column abuts against the top plate, a fastener is arranged on the bottom plate, the fastener is detachably connected to the concrete foundation and the bottom plate can abut against the concrete foundation, and the top plate and the bottom plate both abut against the shell.

4. The removable and detachable waterproof joint structure of steel-wood column base according to claim 3 is characterized in that: The concrete foundation includes pre-buried bolts and post-poured concrete; The embedded bolts are embedded in the post-cast concrete, and pass through the base plate to connect with the fasteners.

5. The removable and detachable waterproof joint structure of steel-wood column base according to claim 2 is characterized in that: The shell includes a plurality of steel plates, each of which is detachably connected to a wall surface and the inner walls of the steel plates abut against the heat-insulating blocks.

6. The removable and detachable waterproof joint structure of steel-wood column base according to claim 5 is characterized in that: The connecting gap between the steel plate and the wall is also provided with the waterproof cover plate to cover the gap for waterproofing and heat preservation.

7. The removable and detachable waterproof joint structure of steel-wood column foot according to any one of claims 1 to 6, characterized in that: The repeatedly detachable waterproof node structure of the steel-wood column foot also includes a shear-resistant component, which is arranged on the column foot and the wooden column to distribute the shear force.

8. The removable and detachable waterproof joint structure of steel-wood column base according to claim 7 is characterized in that: The shear-resistant component comprises a shear key and a shear groove, wherein the shear key is arranged on the column foot, and the shear groove is arranged on the wooden column corresponding to the shear key, and the shear key can be snapped into the shear groove.

9. The removable and detachable waterproof joint structure of steel-wood column foot according to any one of claims 1 to 5, characterized in that: The repeatedly detachable steel-wood column foot waterproof node structure also includes an outer insulation layer, which is arranged outside the shell and connected to the column foot.

10. The removable and reassembleable steel-wood column foot waterproof node structure according to claim 9, characterized in that: The outer insulation layer includes a skirting line and insulation material, one end of the skirting line is connected to the wooden column, the other end of the skirting line is connected to the concrete foundation, and the insulation material is filled between the skirting line and the column foot.

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