U-shaped plate-type steel-wood composite node and construction method based on steel-foam aluminum energy dissipation

Abstract

The present invention relates to the technical field of connection of building structures, and discloses a U-shaped plate type steel-wood composite node based on steel-foam aluminum energy dissipation, which is used for connecting steel square columns, wooden square columns and I-beams, comprising: connecting the beam U-shaped plate with the I-beam; bolting the column U-shaped plate with the beam U-shaped plate to form a columnar installation cavity that runs through the beam U-shaped plate and the column U-shaped plate from top to bottom, wherein the column U-shaped plate comprises: an outer column U-shaped plate and an inner column U-shaped plate embedded in the outer column U-shaped plate, wherein a plurality of triangular grooves that fit each other are arranged between the outer column U-shaped plate and the inner column U-shaped plate; the top end of the steel square column extends into the installation cavity, and the steel square column is connected to the beam U-shaped plate and the column U-shaped plate by bolts; a carbon fiber cloth is pasted on the bottom end of the wooden square column, and the bottom end of the wooden square column is inserted into the columnar installation cavity formed by the beam U-shaped plate and the column U-shaped plate; the steel-wood composite node can prevent the wood from breaking or deforming, improve the impact resistance of the node, and ensure the overall stability and safety of the assembled structure.

Description

Technical Field

[0001] The invention relates to the technical field of connection of building structures, and in particular to a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation. Background Art

[0002] With the advancement of science and technology and people's increasing attention to environmental protection and energy-saving concepts, the construction industry is constantly exploring new structural technologies and building materials. Prefabricated structures came into being in this context, and steel-wood composite structures have also been widely used. However, the Northwest region is mountainous and has limited land, so the available open space for housing construction is limited. Therefore, most township houses and some urban buildings have to be built on the mountains to cope with the situation of large populations and small land. At the same time, earthquakes and mudslides frequently occur in the Northwest region. Although many mountains have been artificially reinforced to prevent irreversible damage to surrounding buildings due to mountain instability, when they are hit by more precipitation, the erosion of the mountains by these precipitations will aggravate the instability of the mountains. Under the influence of many similar uncertain factors, these houses built on the mountains are sometimes affected by mudslides and falling rocks.

[0003] For the steel-wood composite structure, the connection node is the most important part of the structure, and its mechanical properties will directly affect the stability and safety of the entire building. When the structure is subjected to impacts such as mudslides, the steel-wood composite node is easily damaged due to the large force. Based on the above situation, the present invention designs a steel-wood hybrid node suitable for the northwest region, and studies its impact resistance. The lower part of the node is a steel structure, which can provide functional uses, and the upper part adopts a wooden structure, which is warm in winter and cool in summer, and can provide a comfortable living experience. Therefore, this structure takes into account both functional and residential uses.

[0004] By comparing with the existing steel-wood composite nodes, it is found that most of them are direct connections between steel and wood. There are significant differences in the physical properties of steel and wood. Steel has higher strength and hardness, while wood has good elasticity and toughness. This difference will lead to stress mutation at the connection. Due to the different deformation and displacement characteristics of steel and wood, when natural disasters such as mudslides occur, the connection will be damaged, thus affecting the connection strength and the stability of the overall structure. In addition, most steel-wood composite nodes are complex in structure and inconvenient for construction, and there are many openings in the wood, which weakens the integrity and bearing capacity of the wood. Through the analysis of existing nodes, no research on the impact resistance of steel-wood composite nodes has been found. In previous studies, some scholars ignored the stability and bearing capacity issues in order to make the node structure simple. At the same time, some scholars only considered its force problem, but its structure was relatively complex, which led to problems such as construction progress delays and reduced construction quality. Summary of the invention

[0005] The present invention proposes a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, which can prevent the wood from breaking or deforming, improve the impact resistance of the node, ensure the overall stability and safety of the assembled structure, and solve the shortcomings of the above-mentioned prior art.

[0006] The technical solution of the present invention is: a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, used for connecting steel square columns, wooden square columns and I-beams, characterized in that it also includes:

[0007] Beam U-shaped plate, the inner side of which is connected to the I-beam;

[0008] The column U-shaped plate, the inner side of which is connected to the beam U-shaped plate, the side of the beam U-shaped plate away from the I-beam faces the inner side of the column U-shaped plate, so that a column-shaped installation cavity penetrating from top to bottom is formed between the beam U-shaped plate and the column U-shaped plate; the top end of the steel square column extends into the installation cavity, the steel square column is connected to the beam U-shaped plate and the column U-shaped plate, the column U-shaped plate comprises: an outer column U-shaped plate and an inner column U-shaped plate embedded in the outer column U-shaped plate, and a plurality of triangular grooves that fit each other are provided between the outer column U-shaped plate and the inner column U-shaped plate;

[0009] A plurality of triangular foam aluminums are respectively arranged in the plurality of triangular grooves;

[0010] The carbon fiber cloth is bonded to the bottom end of the wooden square column. The bottom end of the wooden square column is inserted into the columnar installation cavity formed by the beam U-shaped plate and the column U-shaped plate. The wooden square column is connected to the beam U-shaped plate, the column outer U-shaped plate and the column inner U-shaped plate.

[0011] In at least one embodiment of the present disclosure, a plurality of interlaced steel bars are welded between the outer U-shaped plate of the column and the inner U-shaped plate of the column, and the plurality of interlaced steel bars constitute the side walls of the plurality of triangular grooves.

[0012] In at least one embodiment of the present disclosure, the triangular foam aluminum is bonded in the triangular groove by epoxy resin glue, and the carbon fiber cloth is bonded to the wooden square column by epoxy resin.

[0013] In at least one embodiment of the present disclosure, a plurality of first bolt holes are respectively provided on both sides of the beam U-shaped plate, a thickened plate with the same thickness as the triangular groove is provided on both sides between the U-shaped plate outside the column and the U-shaped plate inside the column, and second bolt holes corresponding to the first bolt holes are provided on the U-shaped plate outside the column, the thickened plate and the U-shaped plate inside the column, and the beam U-shaped plate is connected to the U-shaped plate outside the column, the thickened plate and the U-shaped plate inside the column by bolts passing through the first bolt holes and the second bolts.

[0014] In at least one embodiment of the present disclosure, the steel square columns and the wooden square columns are each provided with a plurality of third bolt holes, the beam U-shaped plates, the column outer U-shaped plates and the column inner U-shaped plates are each provided with fourth bolt holes corresponding to the third bolt holes, and the steel square columns and the wooden square columns are connected to the beam U-shaped plates and the column U-shaped plates by bolts passing through the third bolt holes and the fourth bolt holes.

[0015] In at least one embodiment of the present disclosure, the triangular groove is an equilateral triangular groove.

[0016] The present invention also discloses a construction method of a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, comprising the following steps:

[0017] S1: Weld the U-shaped beam plate and the I-beam into a whole;

[0018] S2: Attach interlaced steel bars to the U-shaped plate inside the column to form a triangular groove, and place the triangular foam aluminum in the triangular groove;

[0019] S3: welding the outer U-shaped plate, the triangular groove and the inner U-shaped plate into a whole, namely, the column U-shaped plate;

[0020] S4: Connect the column U-shaped plate and the beam U-shaped plate by bolts, so that a columnar installation cavity penetrating vertically is formed between the beam U-shaped plate and the column U-shaped plate;

[0021] S5: inserting the top end of the steel square column into the column-shaped installation cavity, and connecting the steel square column to the column U-shaped plate and the beam U-shaped plate through bolts;

[0022] S6: Glue carbon fiber cloth to the bottom end of the square wooden column, insert the bottom end of the wooden square column into the column installation cavity formed by the beam U-shaped plate and the column U-shaped plate, and then connect the wooden square column to the column U-shaped plate and the beam U-shaped plate through bolts.

[0023] Compared with the prior art, the present invention has the following technical effects and advantages:

[0024] 1. Wrapping a section of carbon fiber cloth on the wood at the joint of the steel-wood composite node plays a good transition role and improves the strength of the wood, avoiding the stress mutation phenomenon caused by the mismatch of material properties at the joint between steel and wood. When subjected to external loads such as impact, the wood will crack and be damaged, which will affect the stability and safety of the structure.

[0025] 2. Foam aluminum is installed on the nodes. Foam aluminum has excellent energy absorption capacity. When impacted, foam aluminum can absorb a large amount of energy through deformation and destruction of the internal structure, thereby reducing the damage caused by the impact to the structure. It also has good resilience. When impacted, it can quickly return to its original state, reduce residual deformation, and thus maintain the stability of the structure.

[0026] 3. A triangular groove structure is set on the node, which can irreversibly convert the impact energy into other forms of energy when subjected to impact load, and can provide a relatively constant reaction force, which helps to control the dynamic response during the impact process. Combined with foam aluminum, it can absorb more impact energy and better improve the impact resistance of the structure.

[0027] 4. The node has a simple structure, with fewer holes in the wood, and uses U-shaped plates to wrap the steel and wood together, which improves the overall stability of the wood and reduces the deformation and cracking of the wood caused by environmental factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall assembly details of the present invention.

[0030] Figure 3 The U-shaped plate structure of the column of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 4 The U-shaped plate structure of the column of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 5 The U-shaped plate structure of the column of the present invention is shown in FIG. Figure 3 ;

[0033] Figure 6 It is a schematic diagram of the triangular groove and triangular foam aluminum structure of the present invention.

[0034] Description of reference numerals:

[0035] 1. Steel square column; 2. Wooden square column; 3. I-beam; 4. U-shaped plate of beam; 5. U-shaped plate of column; 6. Triangular foam aluminum; 7. Carbon fiber cloth; 51. Triangular groove; 52. U-shaped plate outside column; 53. U-shaped plate inside column; 54. Steel bar; 55. Thickened plate. DETAILED DESCRIPTION

[0036] The drawings in this disclosure are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in this disclosure are only schematic diagrams of the structures.

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "up", "down", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] By comparing with the existing steel-wood composite nodes, it is found that most of them are direct connections between steel and wood. There are significant differences in the physical properties of steel and wood. Steel has higher strength and hardness, while wood has good elasticity and toughness. This difference will lead to stress mutation at the connection. Due to the different deformation and displacement characteristics of steel and wood, when natural disasters such as mudslides occur, the connection will be damaged, thus affecting the connection strength and the stability of the overall structure. In addition, most steel-wood composite nodes are complex in structure and inconvenient for construction, and there are many openings in the wood, which weakens the integrity and bearing capacity of the wood. Through the analysis of existing nodes, no research on the impact resistance of steel-wood composite nodes has been found. In previous studies, some scholars ignored the stability and bearing capacity issues in order to make the node structure simple. At the same time, some scholars only considered its force problem, but its structure was relatively complex, which led to problems such as construction progress delays and reduced construction quality.

[0040] In view of this, a U-shaped plate steel-wood composite node based on steel-foam aluminum energy dissipation is proposed. The composite node can prevent the wood from breaking or deforming, improve the impact resistance of the node, and ensure the overall stability and safety of the assembled structure.

[0041] Combination Figures 1 to 6 As shown, a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation is applied to a steel square column 1, a wooden square column 2 and a sub-beam 3, and also includes:

[0042] A beam U-shaped plate 4, the inner side of which is connected to the I-beam 3;

[0043] The column U-shaped plate 5, the inner side of which is connected to the beam U-shaped plate 4, the side of the beam U-shaped plate 4 away from the I-beam 3 faces the inner side of the column U-shaped plate 5, so that a columnar installation cavity penetrating from top to bottom is formed between the beam U-shaped plate 4 and the column U-shaped plate 5; the top end of the steel square column 1 extends into the installation cavity, the steel square column 1 is connected to the beam U-shaped plate 4 and the column U-shaped plate 5, and the column U-shaped plate 5 includes: an outer column U-shaped plate 52 and an inner column U-shaped plate 53 embedded in the outer column U-shaped plate 52, and a plurality of triangular grooves 51 that fit each other are provided between the outer column U-shaped plate 52 and the inner column U-shaped plate 53;

[0044] A plurality of triangular foam aluminums 6 are respectively disposed in the plurality of triangular grooves 51;

[0045] The carbon fiber cloth 7 is bonded to the bottom end of the wooden square column 2. The bottom end of the wooden square column 2 is inserted into the columnar installation cavity formed by the beam U-shaped plate 4 and the column U-shaped plate 53. The wooden square column 2 is connected to the beam U-shaped plate 4, the column outer U-shaped plate 52 and the column inner U-shaped plate 53.

[0046] As an alternative embodiment, a plurality of mutually staggered steel bars 54 are welded between the column outer U-shaped plate 52 and the column inner U-shaped plate 53 , and the plurality of mutually staggered steel bars 54 constitute the side walls of the plurality of triangular grooves 51 .

[0047] As an alternative embodiment, the triangular foam aluminum 6 is bonded to the triangular groove 51 by epoxy resin glue, and the carbon fiber cloth 7 is bonded to the wooden square column 2 by epoxy resin; the specific present invention uses epoxy resin glue. First, epoxy resin glue does not produce harmful substances during the curing process, is non-toxic to the human body, and meets environmental protection requirements. This makes its application in steel-wood composite structures safer and more reliable. Secondly, it has excellent bonding properties to a variety of materials, including metal and wood. This strong bonding force ensures a close connection between the steel-wood composite structure and improves the integrity and stability of the structure. At the same time, compared with other adhesives, the ductility performance of epoxy resin glue is also more outstanding, which can improve the seismic resistance and impact resistance of the structure to a certain extent.

[0048] As an alternative embodiment, a plurality of first bolt holes are respectively provided on both sides of the beam U-shaped plate 4, and thickened plates 55 with the same thickness as the triangular groove 51 are provided on both sides between the column outer U-shaped plate 52 and the column inner U-shaped plate 53, and second bolt holes corresponding to the first bolt holes are provided on the column outer U-shaped plate 52, the thickened plate 55 and the inner U-shaped plate 53, and the beam U-shaped plate 4 is connected to the column outer U-shaped plate 52, the thickened plate 55 and the column inner U-shaped plate 53 by bolts passing through the first bolt holes and the second bolts.

[0049] As an alternative embodiment, the steel square column 1 and the wooden square column 2 are each provided with a plurality of third bolt holes, the beam U-shaped plate 4, the column outer U-shaped plate 52 and the column inner U-shaped plate 53 are each provided with fourth bolt holes corresponding to the third bolt holes, and the steel square column 1 and the wooden square column 2 are connected to the beam U-shaped plate 4 and the column U-shaped plate 5 by bolts passing through the third bolt holes and the fourth bolt holes.

[0050] As an alternative embodiment, the triangular groove 51 is an equilateral triangular groove.

[0051] The present invention also discloses a construction method of a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, comprising the following steps:

[0052] S1: Welding the U-shaped beam 4 and the I-beam 3 into a whole;

[0053] S2: attaching interlaced steel bars 54 to the U-shaped plate inside the column to form a triangular groove 51, and placing the triangular foam aluminum 6 in the triangular groove 51;

[0054] S3: welding the column outer U-shaped plate 52, the triangular groove 51 and the column inner U-shaped plate 53 into a whole, namely the column U-shaped plate 5;

[0055] S4: Connect the column U-shaped plate 5 and the beam U-shaped plate 4 by bolts, so that a cylindrical installation cavity penetrating from top to bottom is formed between the beam U-shaped plate 4 and the column U-shaped plate 5;

[0056] S5: inserting the top end of the steel square column 1 into the column-shaped installation cavity, and connecting the steel square column 1 to the column U-shaped plate 5 and the beam U-shaped plate 4 through bolts;

[0057] S6: Paste the carbon fiber cloth 7 on the bottom end of the square wooden column 2, and insert the bottom end of the wooden square column 2 into the columnar installation cavity formed by the beam U-shaped plate 4 and the column U-shaped plate 5, and then connect the wooden square column 2 to the column U-shaped plate 5 and the beam U-shaped plate 4 through bolts.

[0058] The above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions for implementing the present invention, and should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, used for connecting steel square columns (1), wooden square columns (2) and I-beams (3), characterized in that: include: A U-shaped beam plate (4), the inner side of which is connected to the I-beam (3); A column U-shaped plate (5) whose inner side is connected to the beam U-shaped plate (4); the side of the beam U-shaped plate (4) away from the I-beam (3) faces the inner side of the column U-shaped plate (5), so that a column-shaped installation cavity penetrating from top to bottom is formed between the beam U-shaped plate (4) and the column U-shaped plate (5); the top end of the steel square column (1) extends into the installation cavity; the steel square column (1) is connected to the beam U-shaped plate (4) and the column U-shaped plate (5); the column U-shaped plate (5) comprises: an outer column U-shaped plate (52) and an inner column U-shaped plate (53) embedded in the outer column U-shaped plate (52); a plurality of triangular grooves (51) that fit each other are provided between the outer column U-shaped plate (52) and the inner column U-shaped plate (53); A plurality of triangular foam aluminums (6) are respectively arranged in the plurality of triangular grooves (51); The carbon fiber cloth (7) is bonded to the bottom end of the wooden square column (2), the bottom end of the wooden square column (2) is inserted into a columnar installation cavity formed by a beam U-shaped plate (4) and a column U-shaped plate (53), and the wooden square column (2) is connected to the beam U-shaped plate (4), the column outer U-shaped plate (52) and the column inner U-shaped plate (53).

2. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation as claimed in claim 1, characterized in that: A plurality of mutually staggered steel bars (54) are welded between the column outer U-shaped plate (52) and the column inner U-shaped plate (53), and the plurality of mutually staggered steel bars (54) constitute the side walls of the plurality of triangular grooves (51).

3. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation as claimed in claim 1, characterized in that: The triangular foam aluminum (6) is bonded in the triangular groove (51) by epoxy resin glue, and the carbon fiber cloth (7) is bonded on the wooden square column (2) by epoxy resin.

4. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation as claimed in claim 3, characterized in that: A plurality of first bolt holes are respectively provided on both sides of the beam U-shaped plate (4); a thickened plate (55) having the same thickness as the triangular groove (51) is provided on both sides between the column outer U-shaped plate (52) and the column inner U-shaped plate (53); second bolt holes corresponding to the first bolt holes are provided on the column outer U-shaped plate (52), the thickened plate (55) and the column inner U-shaped plate (53); and the beam U-shaped plate (4) is connected to the column outer U-shaped plate (52), the thickened plate (55) and the column inner U-shaped plate (53) by bolts passing through the first bolt holes and the second bolts.

5. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation as claimed in claim 1, characterized in that: The steel square column (1) and the wooden square column (2) are each provided with a plurality of third bolt holes, and the beam U-shaped plate (4), the column outer U-shaped plate (52) and the column inner U-shaped plate (53) are each provided with fourth bolt holes corresponding to the third bolt holes, and the steel square column (1) and the wooden square column (2) are connected to the beam U-shaped plate (4) and the column U-shaped plate (5) by bolts passing through the third bolt holes and the fourth bolt holes.

6. A U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation as claimed in claim 3, characterized in that: The triangular groove (51) is an equilateral triangular groove.

7. A construction method for a U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation, based on the U-shaped plate-type steel-wood composite node based on steel-foam aluminum energy dissipation according to claim 1, characterized in that: The following steps are involved: S1: welding the U-shaped beam plate (4) and the I-beam (3) into a whole; S2: Attaching interlaced steel bars (54) to the U-shaped plate inside the column to form a triangular groove (51), and placing a triangular foam aluminum (6) in the triangular groove (51); S3: welding the column outer U-shaped plate (52), the triangular groove (51) and the column inner U-shaped plate (53) into a whole, namely the column U-shaped plate (5); S4: Connecting the column U-shaped plate (5) and the beam U-shaped plate (4) by means of bolts, so that a columnar installation cavity penetrating vertically is formed between the beam U-shaped plate (4) and the column U-shaped plate (5); S5: inserting the top end of the steel square column (1) into the column-shaped installation cavity, and connecting the steel square column (1) to the column U-shaped plate (5) and the beam U-shaped plate (4) through bolts; S6: A carbon fiber cloth (7) is pasted on the bottom end of the square wooden column (2), and the bottom end of the wooden square column (2) is inserted into the column-shaped installation cavity formed by the beam U-shaped plate (4) and the column U-shaped plate (5), and then the wooden square column (2) is connected to the column U-shaped plate (5) and the beam U-shaped plate (4) by bolts.

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