A reinforced double U-shaped cold-formed thin-walled steel-wood composite beam-column node

Abstract

A reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node comprises a wooden column, a first rectangular steel-wood composite beam, a second rectangular steel-wood composite beam and a steel-wood reinforcement component, wherein a mortise and tenon space is reserved at the beam-column connection of the wooden column; the steel-wood composite beam comprises a first rectangular steel-wood composite beam, and the second rectangular steel-wood composite beam is composed of two U-shaped cold-bent thin steel components and four wooden boards, and the first and second steel-wood composite beams are placed in the wooden column through mortise and tenon connection; the steel-wood reinforcement component comprises a steel connector with a square tube bracket, a wooden strut, and a wooden pad, wherein one end of the strut is embedded in the square tube of the steel connector, and the other end has a tenon embedded in a hole reserved at the bottom of the pad, and the pad is overlapped with the top of the pad and the steel beam to play an auxiliary supporting role for the steel beam. The present invention adopts a combination of U-shaped cold-bent steel components and wooden blocks to greatly improve the bearing capacity and bending stiffness of the beam, and at the same time, the combined structure makes the mortise and tenon method of the beam diversified, more convenient and stable.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering, and in particular relates to a reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node. Background Art

[0002] Wood is one of the most widely used building materials in the world. As the only renewable building material, it has many advantages, such as excellent carbon fixation, easy processing, high strength-to-weight ratio, good thermal insulation and sound insulation, ability to reduce the harm of ultraviolet rays to the human body and produce a warm texture, flame retardant, etc. Steel has the advantages of light weight, high strength, excellent structural bearing capacity, good ductility, etc. In addition, it has a variety of connection methods. Steel structure is cost-effective. The use of steel structure can greatly save construction time, increase residential space, and has excellent properties such as energy saving and earthquake resistance.

[0003] Wood and steel have their own advantages, but also their own defects. The natural defects of wood lead to large differences in individual material properties; its own anisotropy and shrinkage and swelling lead to dimensional instability; the invasion of bacteria and insects also restricts the further development of wooden structures. At the same time, the forest resource situation facing my country is still very severe, and the forest coverage rate and per capita forest area are still far below the world average. Steel is easy to rust and become unstable, causing the structure to deform rapidly and eventually completely lose its bearing capacity; in addition, the electrical conductivity and thermal conductivity of steel affect the performance of steel structure buildings. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node. The combination of steel components and wood can utilize the advantages of each material to achieve complementary performance. Compared with traditional pure wooden beams, the I-beam composed of two U-shaped cold-bent thin steel back-to-back has higher strength and higher stability, and increases the span and space utilization of the beam; adding composite wood boards to the flanges and webs on the periphery of the composite beam can effectively utilize the energy absorption and flame retardant properties of wood, provide the components with earthquake resistance and fire resistance, and at the same time increase the comfort and thermal insulation and sound insulation performance of the building.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, comprising a wooden column 1, a first rectangular steel-wood composite beam, a second rectangular steel-wood composite beam and a steel-wood reinforcement component;

[0007] The wooden column has reserved mortise and tenon joint spaces at the connection between beams and columns;

[0008] The first rectangular steel-wood composite beam comprises two upper and lower L-shaped flange wood boards 4, two left and right first rectangular steel-wood composite beam web wood boards 3 with first composite beam tenons 12, and two first rectangular steel-wood composite beam U-shaped steel beams 2;

[0009] The second rectangular steel-wood composite beam comprises two upper and lower second rectangular steel-wood composite beam flange wood boards 6, two left and right second rectangular steel-wood composite beam web wood blocks with mortise holes 7, and two second rectangular steel-wood composite beam U-shaped web perforated steel beams 5;

[0010] The steel-wood reinforcement component includes an L-shaped steel connector 8 with a square tube bracket, a tenoned support rod 9 with a wooden support rod tenon 14 at one end, and a square pad 10 with a mortise 15 at the bottom.

[0011] The described reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node has a preferred solution in which a wooden column 1 reserves a space for joining a first rectangular steel-wood composite beam and a second rectangular steel-wood composite beam in the column at the beam-column connection. The size of the reserved space is consistent with the width and height of the overall cross-section of the rectangular composite beam, and the depths in the two directions are the depths of the two composite beams embedded in the column.

[0012] The described reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, its preferred scheme is that two first rectangular steel-wood composite beam U-shaped steel beams 2 in the first rectangular steel-wood composite beam are back-to-back to form an I-beam, and a first rectangular steel-wood composite beam with a tenon web wooden board 3 with a first composite beam tenon 12 at one end is placed on the left and right sides of the web, and its upper and lower flanges are respectively placed in the L-shaped flange wooden board 4, and the L-shaped flange wooden board 4, the first rectangular steel-wood composite beam with a tenon web wooden board 3 and the U-shaped steel beam are mutually connected and fixed by self-tapping screws 11.

[0013] The reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, the preferred solution of which is that the second rectangular steel-wood composite beam includes upper and lower second rectangular steel-wood composite beam flange wood boards 6, and two second rectangular steel-wood composite beam U-shaped web plate perforated steel beams 5 are back-to-back to form an I-beam, wherein the upper and lower flanges of the outer U-shaped steel beam ends need to be cut, and the cutting width and length are respectively consistent with the thickness and width of the L-shaped flange wood board 4 in the first rectangular steel-wood composite beam, thereby reserving a splicing space with the L-shaped flange wood board 4 in the first rectangular steel-wood composite beam;

[0014] The size of the web opening of the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 is consistent with the size of the tenon 12 of the first composite beam, and the second rectangular steel-wood composite beam web plate wood blocks 7 with mortise are placed on the left and right sides of the web respectively, and the size of the hole is consistent with the size of the tenon 12 of the first composite beam. The web opening of the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 is combined with the reserved hole of the second rectangular steel-wood composite beam web plate wood block 7 with mortise to form a second composite beam mortise 13, and the second rectangular steel-wood composite beam flange wooden board 6, the second rectangular steel-wood composite beam web plate wood block 7 with mortise and the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 are connected and fixed to each other by self-tapping screws 11.

[0015] The preferred embodiment of the reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node is that the open beam end of the second composite steel-wood beam 5 is vertically placed between the upper and lower L-shaped flange wooden boards 4 of the first rectangular steel-wood composite beam, and then the tenon 12 of the first composite beam is vertically embedded in the mortise 13 of the second composite beam to complete the overlap in the column of the two composite beams.

[0016] The reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, the preferred embodiment of which is that there is an L-shaped steel connector 8 with a square tube bracket under the first rectangular steel-wood composite beam and the second rectangular steel-wood composite beam, which is used to stabilize the connection between the composite beam and the column, wherein one end of the L-shaped steel connector 8 with the square steel tube bracket is fixed to the wooden column 1 by screws, and the other end of the L-shaped steel connector 8 is fixed to each composite beam by screws, and the size of the square tube bracket is consistent with the cross-sectional size of the tenon support rod 9.

[0017] The described reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, its preferred solution is that a rectangular tenoned strut 9 is inserted into the square tube bracket of the L-shaped steel connector 8, and the other end of the tenoned strut 9 has a wooden strut tenon 14; the bottom of the square pad 10 has a mortise 15, the tenoned strut 9 and the square pad 10 are connected by mortise and tenon joints, and a lap surface is reserved on the top of the square pad 10 for lap connection with the wooden board of the lower flange of the composite beam, and the width of the lap surface is the width of the composite beam flange.

[0018] The beneficial effects and advantages of the present invention are as follows:

[0019] 1) The invention has a wide range of applications. It is applicable to low-rise buildings such as homestays, restaurants, libraries, cultural centers, and student dormitories in tourist development areas;

[0020] 2) Convenient material acquisition: the wood and steel materials involved in the present invention are of various types and have a wide range of uses, and can be obtained locally;

[0021] 3) Green and environmentally friendly. The materials used for the wooden columns and various wooden boards in the present invention can be selected from composite glued wood instead of traditional logs, which greatly increases the recycling rate of wood and conforms to the concept of green building advocated by my country;

[0022] 4) The basic steel and wood components included in the present invention are simple in structure and can be prefabricated in the factory and assembled on site in advance, with a short construction period and convenient installation;

[0023] 5) The combination of steel and wood in the present invention makes good use of the advantages of both and makes up for their shortcomings. Compared with pure steel beams, steel-wood composite beams greatly reduce the consumption of steel, and compared with pure wood beams, the bearing capacity and stability are increased. At the same time, the wood in the composite beam avoids the exposure of steel and effectively prevents the rust of steel. The flame retardancy of wood enables it to maintain certain mechanical properties during the combustion process, thereby protecting steel with poor fire resistance and delaying the occurrence of structural damage, which gives people more time to escape when encountering accidental disasters;

[0024] 6) The ingenious mortise and tenon joints of the first composite beam and the second composite beam in the column of the present invention restrain each other after the two groups of beams are overlapped, restrict the relative slippage between the components, and completely fix them, making the overlap of the composite beams more stable;

[0025] 7) The steel-wood composite reinforcement component designed in the present invention is different from the traditional steel connector. The setting of the support rod provides a second line of protection for the composite beam. The overlap between the top of the pad and the steel beam plays an auxiliary supporting role for the steel beam, making the entire beam-column node safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of the reinforced double-jointed U-shaped cold-formed thin-walled steel-wood composite beam-column node;

[0027] Figure 2 It is a three-dimensional diagram of wooden columns;

[0028] Figure 3 This is the position relationship diagram of the wooden column and the steel connector;

[0029] Figure 4 It is a three-dimensional diagram of the first rectangular steel-wood composite beam;

[0030] Figure 5 This is the disassembly diagram of the first rectangular steel-wood composite beam;

[0031] Figure 6 It is a three-dimensional diagram of the second rectangular steel-wood composite beam;

[0032] Figure 7 This is the disassembly diagram of the second rectangular steel-wood composite beam;

[0033] Figure 8 Schematic diagram of the joint construction of two composite beams;

[0034] Fig. 9 It is a three-dimensional diagram of the steel and wood reinforcement components;

[0035] Fig.10This is the disassembly diagram of the steel and wood reinforcement components.

[0036] In the figure, 1 is a wooden column; 2 is a U-shaped steel beam of the first rectangular steel-wood composite beam; 3 is a wooden block with a tenon web of the first rectangular steel-wood composite beam; 4 is an L-shaped flange wooden board; 5 is a U-shaped web steel beam with a hole of the second rectangular steel-wood composite beam; 6 is a flange wooden board of the second rectangular steel-wood composite beam; 7 is a wooden block with a mortise web of the second rectangular steel-wood composite beam; 8 is an L-shaped steel connector; 9 is a strut with a tenon; 10 is a square pad; 11 is a screw; 12 is the tenon of the first composite beam; 13 is the mortise of the second composite beam; 14 is the tenon of the wooden strut; and 15 is the mortise. DETAILED DESCRIPTION

[0037] like Figure 1-10 As shown, a reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node comprises a wooden column 1, a first rectangular steel-wood composite beam, a second rectangular steel-wood composite beam and a steel-wood reinforcement component;

[0038] The wooden column has reserved mortise and tenon joint spaces at the connection between beams and columns;

[0039] The first rectangular steel-wood composite beam comprises two upper and lower L-shaped flange wood boards 4, two left and right first rectangular steel-wood composite beam web wood boards 3 with first composite beam tenons 12, and two first rectangular steel-wood composite beam U-shaped steel beams 2;

[0040] The second rectangular steel-wood composite beam comprises two upper and lower second rectangular steel-wood composite beam flange wood boards 6, two left and right second rectangular steel-wood composite beam web wood blocks with mortise holes 7, and two second rectangular steel-wood composite beam U-shaped web perforated steel beams 5;

[0041] The steel-wood reinforcement component includes an L-shaped steel connector 8 with a square tube bracket, a tenoned support rod 9 with a wooden support rod tenon 14 at one end, and a square pad 10 with a mortise 15 at the bottom.

[0042] The wooden column 1 reserves a space for the first rectangular steel-wood composite beam and the second rectangular steel-wood composite beam to be assembled in the column at the beam-column connection. The reserved space is consistent with the width and height of the overall cross-section of the rectangular composite beam, and the depths in the two directions are the depths of the two composite beams embedded in the column.

[0043] Two first rectangular steel-wood composite beam U-shaped steel beams 2 in the first rectangular steel-wood composite beam are back-to-back to form an I-beam, and first rectangular steel-wood composite beam web wooden boards 3 with tenon 12 at one end are placed on the left and right sides of the web, and the upper and lower flanges are placed in the L-shaped flange wooden boards 4 respectively. The L-shaped flange wooden boards 4, the first rectangular steel-wood composite beam web wooden boards 3 with tenon and the U-shaped steel beam are mutually connected and fixed by self-tapping screws 11.

[0044] The second rectangular steel-wood composite beam includes upper and lower second rectangular steel-wood composite beam flange wood boards 6, and two second rectangular steel-wood composite beam U-shaped web plate perforated steel beams 5 are back-to-back to form an I-beam, wherein the upper and lower flanges of the outer U-shaped steel beam ends need to be cut, and the cutting width and length are respectively consistent with the thickness and width of the L-shaped flange wood board 4 in the first rectangular steel-wood composite beam, thereby reserving a splicing space with the L-shaped flange wood board 4 in the first rectangular steel-wood composite beam;

[0045] The size of the web opening of the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 is consistent with the size of the tenon 12 of the first composite beam, and the second rectangular steel-wood composite beam web plate wood blocks 7 with mortise are placed on the left and right sides of the web respectively, and the size of the hole is consistent with the size of the tenon 12 of the first composite beam. The web opening of the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 is combined with the reserved hole of the second rectangular steel-wood composite beam web plate wood block 7 with mortise to form a second composite beam mortise 13, and the second rectangular steel-wood composite beam flange wooden board 6, the second rectangular steel-wood composite beam web plate wood block 7 with mortise and the second rectangular steel-wood composite beam U-shaped web plate with a hole steel beam 5 are connected and fixed to each other by self-tapping screws 11.

[0046] The open beam end of the second composite steel-wood beam 5 is placed vertically between the upper and lower L-shaped flange wooden boards 4 of the first rectangular composite steel-wood beam, and then the tenon 12 of the first composite beam is vertically embedded in the mortise 13 of the second composite beam to complete the overlap in the column of the two composite beams.

[0047] There is an L-shaped steel connector 8 with a square tube support under the first rectangular steel-wood composite beam and the second rectangular steel-wood composite beam, which is used to stabilize the connection between the composite beam and the column. One end of the L-shaped steel connector 8 with the square steel tube support is fixed to the wooden column 1 by screws, and the other end of the L-shaped steel connector 8 is fixed to each composite beam by screws. The size of the square tube support is consistent with the cross-sectional size of the tenon support rod 9.

[0048] A rectangular tenoned support rod 9 is inserted into the square tube bracket of the L-shaped steel connector 8, and the other end of the tenoned support rod 9 has a wooden support rod tenon 14; the bottom of the square pad 10 has a mortise 15, and the tenoned support rod 9 is connected to the square pad 10 through mortise and tenon joints, and a lap surface is reserved on the top of the square pad 10 for lap connection with the wooden board of the lower flange of the composite beam, and the width of the lap surface is the width of the composite beam flange.

[0049] The specific installation process is as follows:

[0050] First, if Figure 3 As shown, two L-shaped steel connectors 8 with square tube brackets are fixed with screws below the interface between the wooden column 1 and the composite beam; secondly, as shown in FIG. Figure 6-7 As shown, the components of the second composite beam are completely fixed at the reserved screw holes with self-tapping screws 11; then, Figure 5Except for the upper and lower L-shaped flange planks 4, other parts are completely fixed with screws 11; then, Figure 5 As shown in the figure, the upper and lower L-shaped flange planks 4 of the first rectangular steel-wood composite beam are pushed into the position in the column, and then the assembled second composite beam is pressed Figure 1 Install the second composite beam at the position until the end of the second composite beam is embedded between the upper and lower L-shaped flange planks 4 of the first composite beam; Figure 5 The first rectangular steel-wood composite beam U-shaped steel beam 2 and the first rectangular steel-wood composite beam with tenon web wood block 3 are pushed together into the second composite beam mortise 13 reserved by the second composite beam to form a mortise and tenon connection. The upper and lower L-shaped flange wood boards 4 of the first composite beam are fixed with screws 11 to the first rectangular steel-wood composite beam U-shaped steel beam 2 and the first rectangular steel-wood composite beam with tenon web wood block 3. At this time, the two composite beams are installed and completely fixed by the internal mortise and tenon form; then the L-shaped steel connector 8 is connected to the lower flange wood board of the composite beam as shown in FIG. Figure 1 As shown, use screws to fix the connection; then, Fig.10 As shown, the wooden support rod tenon 14 with tenon 9 is inserted into the bottom of the square pad 10; Fig. 9 As shown, the tenon support rod 9 equipped with a square pad 10 is inserted into the square tube bracket 8 of the L-shaped steel connector of the connector. At this time, the composite beam is supported by the square pad 10, and then the square tube bracket 8 of the L-shaped steel connector and the tenon support rod 9 are fixedly connected with screws; finally, the steel-wood reinforcement components and the entire steel-wood composite beam-column node are all installed.

Claims

1. A reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node, characterized in that: It comprises a wooden column (1), a first rectangular steel-wood composite beam, a second rectangular steel-wood composite beam and a steel-wood reinforcement component; The wooden column has reserved mortise and tenon joint spaces at the connection between beams and columns; The first rectangular steel-wood composite beam comprises two upper and lower L-shaped flange wood boards (4), two left and right first rectangular steel-wood composite beam web wood boards with tenons (3) having first composite beam tenons (12), and two first rectangular steel-wood composite beam U-shaped steel beams (2); The second rectangular steel-wood composite beam comprises two upper and lower second rectangular steel-wood composite beam flange wood boards (6), two left and right second rectangular steel-wood composite beam web wood blocks with mortise holes (7), and two second rectangular steel-wood composite beam U-shaped web perforated steel beams (5); The steel-wood reinforcement component comprises an L-shaped steel connector (8) with a square tube bracket, a tenoned support rod (9) with a wooden support rod tenon (14) at one end, and a square pad (10) with a mortise (15) at the bottom; The wooden column (1) has a column body at the beam-column connection point reserved for a space for the first rectangular steel-wood composite beam and the second rectangular steel-wood composite beam to be assembled in the column, the size of the reserved space being consistent with the width and height of the overall cross-section of the rectangular composite beam, and the depths in two directions are respectively the depths of the two composite beams embedded in the column; Two first rectangular steel-wood composite beam U-shaped steel beams (2) in the first rectangular steel-wood composite beam are placed back to back to form an I-beam, and first rectangular steel-wood composite beam web board (3) with a first composite beam tenon (12) at one end is placed on the left and right sides of the web, and its upper and lower flanges are placed in the L-shaped flange board (4), respectively, and the L-shaped flange board (4), the first rectangular steel-wood composite beam web board (3) with a tenon and the U-shaped steel beam are mutually connected and fixed by self-tapping screws (11); The second rectangular steel-wood composite beam comprises upper and lower second rectangular steel-wood composite beam flange wood boards (6), and two second rectangular steel-wood composite beam U-shaped web plate perforated steel beams (5) are back-to-back to form an I-beam, wherein the upper and lower flanges of the outer U-shaped steel beam ends need to be cut, and the cutting width and length are respectively consistent with the thickness and width of the L-shaped flange wood board (4) in the first rectangular steel-wood composite beam, thereby reserving a splicing space with the L-shaped flange wood board (4) in the first rectangular steel-wood composite beam; The web opening size of the second rectangular steel-wood composite beam U-shaped web plate with hole steel beam (5) is consistent with the size of the tenon (12) of the first composite beam, and the second rectangular steel-wood composite beam web plate with mortise wood blocks (7) are respectively placed on the left and right sides of the web plate, and the hole size is consistent with the size of the tenon (12) of the first composite beam. The web opening of the second rectangular steel-wood composite beam U-shaped web plate with hole steel beam (5) and the reserved hole of the second rectangular steel-wood composite beam web plate with mortise wood block (7) form a second composite beam mortise (13), and the second rectangular steel-wood composite beam flange wood board (6), the second rectangular steel-wood composite beam web plate with mortise wood block (7) and the second rectangular steel-wood composite beam U-shaped web plate with hole steel beam (5) are mutually connected and fixed by self-tapping screws (11). The open beam end of the second composite steel-wood beam is vertically placed between the upper and lower L-shaped flange planks (4) of the first rectangular composite steel-wood beam, and then the tenon (12) of the first composite beam is vertically embedded in the mortise (13) of the second composite beam to complete the overlap of the two composite beams in the column.

2. A reinforced double-jointed U-shaped cold-bent thin-walled steel-wood composite beam-column node according to claim 1, characterized in that: An L-shaped steel connector (8) with a square tube support is provided under each of the first rectangular steel-wood composite beam and the second rectangular steel-wood composite beam, and is used to stabilize the connection between the composite beam and the column, wherein one end of the L-shaped steel connector (8) with the square tube support is fixed to the wooden column (1) by screws, and the other end of the L-shaped steel connector (8) is fixed to each composite beam by screws, and the size of the square tube support is consistent with the cross-sectional size of the tenon support rod (9).

3. A reinforced double U-shaped cold-bent thin-walled steel-wood composite beam-column node according to claim 1, characterized in that: A rectangular tenoned support rod (9) is inserted into the square tube support seat of the L-shaped steel connector (8), and the other end of the tenoned support rod (9) is provided with a wooden support rod tenon (14); a mortise (15) is provided at the bottom of the square cushion block (10), and the tenoned support rod (9) and the square cushion block (10) are connected by mortise and tenon joints, and a lap joint surface is reserved at the top of the square cushion block (10) for lap jointing with the wooden board of the lower flange of the composite beam, and the width of the lap joint surface is the width of the flange of the composite beam.

Images