A special-shaped mortise and tenon steel-wood combined beam-column joint and a construction method thereof

Abstract

The application discloses a special-shaped mortise and tenon steel-wood combined beam-column joint and a construction method thereof, and the joint comprises a lower column, an upper column and a wood beam, steel plates and steel sleeves are arranged at the connecting positions of the lower column, the upper column and the wood beam, and the lower column and the upper column are connected through a core tube mortise and tenon; the steel plates are symmetrically distributed on the upper and lower sides of the wood beam; the steel plate comprises a cross-shaped flange and a special-shaped web, the special-shaped web is arranged in a cross shape on the cross-shaped flange, the special-shaped web is inserted into the wood beam, the height of the special-shaped web is half of the height of the wood beam, the special-shaped web is W-shaped, and the special-shaped web comprises a plurality of steel plates which are mutually obtuse-angled. The application overcomes the shortcomings of instability of steel and anisotropy of wood while guaranteeing simple processing and good stress characteristics, fully retains the advantages of steel assembly and the advantages of green and environmental protection of wood, uses an embedded steel structure, guarantees the appearance of the whole wood structure without being damaged while greatly strengthening the bearing capacity of the structure, and realizes simple, fast and convenient on-site assembly of components.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of beam-column joints and construction methods thereof, in particular to a special-shaped mortise and tenon steel-wood combined beam-column joint and a construction method thereof. BACKGROUND

[0002] With the transformation of modern building field to the direction of environmental protection and energy saving, wood gradually becomes an important building material to replace traditional concrete and steel due to its light weight, low energy consumption and green environmental protection characteristics, which has high research value and application potential. Compared with concrete buildings and steel structure buildings, wood structure buildings can significantly reduce carbon emissions during construction, and their unique connection method and material properties give wood structure buildings faster construction speed.

[0003] However, in wood structure buildings, the performance of joint connection as the key part of the whole structure directly affects the overall safety and stability of the building. The traditional pure wood joint has low bearing capacity and is prone to wood grain cracking, which cannot meet the requirements of modern buildings on structural strength. The existing steel-wood combined system simply changes the joint into a pure steel joint, which improves the bearing capacity, but the ability of steel and wood to jointly coordinate energy dissipation is poor, and wood components are prone to damage during earthquakes. In addition, these joints have obvious shortcomings in construction efficiency and cost control, usually relying on on-site welding operations, which not only prolongs the construction period, but also increases the construction difficulty and cost, which is not conducive to the pursuit of efficient construction and cost-effectiveness of modern buildings. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art, and provides a special-shaped mortise and tenon steel-wood combined beam-column joint with high bearing capacity and green environmental protection characteristics, and a construction method of the special-shaped mortise and tenon steel-wood combined beam-column joint, which is efficient, convenient, stable in structure, fast in construction, and environmentally friendly and energy-saving.

[0005] The technical scheme of the present application is as follows: a special-shaped mortise and tenon steel-wood combined beam-column joint, comprising a lower column, an upper column and a wood beam, steel plates and steel sleeves are arranged at the connection of the lower column, the upper column and the wood beam, and the lower column and the upper column are connected through a core tube mortise and tenon connection; the steel plates are symmetrically distributed on the upper and lower sides of the wood beam; the steel plate comprises a cross-shaped flange and a special-shaped web, the special-shaped web is arranged in a cross shape on the cross-shaped flange, the special-shaped web is inserted into the wood beam, the height of the special-shaped web is half of the height of the wood beam, the special-shaped web is W-shaped, and the special-shaped web comprises a plurality of steel plates that are mutually obtuse.

[0006] Further, the wood beam is arranged in a cross shape, and the steel sleeve is arranged between adjacent wood beams, and the two sides of the steel sleeve are connected with the upper flange and the lower flange of the steel plate, respectively.

[0007] Further, the lower column top is provided with a lower column mortise and tenon groove, the upper column bottom is provided with an upper column mortise and tenon groove, and the diagonal lines of the lower column and the upper column are respectively provided with L-shaped and corresponding lower column first mortise and tenon groove and upper column first mortise and tenon groove.

[0008] Further, the inner side of the lower column mortise and tenon section is provided with a first dovetail mortise and a first dovetail tenon, the outer side of the upper column mortise and tenon section is provided with a second dovetail mortise and a second dovetail tenon, the first dovetail mortise is connected with the second dovetail tenon, and the first dovetail tenon is connected with the second dovetail mortise.

[0009] Further, the height of the lower column mortise and tenon section is the same as that of the upper column mortise and tenon section, and is equal to the sum of the thickness of the wood beam and the upper and lower cross-shaped flange thickness of the steel plate, and the end of the wood beam is provided with a tenon and a special-shaped groove.

[0010] Further, the special-shaped web is connected with the special-shaped groove, the surface of the cross-shaped flange is provided with a square hole and a special-shaped mortise hole, the square hole is connected with the lower column mortise and tenon section and the upper column mortise and tenon section, the special-shaped mortise hole corresponds to the lower column mortise and tenon groove and the upper column mortise and tenon groove, and is used for accommodating the core tube.

[0011] Further, the core tube is provided with a special-shaped mortise hole around, the special-shaped mortise hole corresponds to the special-shaped mortise and tenon groove, the special-shaped mortise and tenon groove, and the special-shaped mortise hole, and the upper column, the lower column and the steel plate are connected into a whole through the mortise and tenon connection.

[0012] Further, the side of the cross-shaped flange different from the special-shaped web is provided with a mortise and tenon tenon, the mortise and tenon tenon is inserted into the first mortise and tenon groove, and the mortise and tenon tenon is inserted into the first mortise and tenon groove.

[0013] Further, the steel sleeve comprises a channel steel one, a channel steel two and an angle steel, the angle steel is located on the outer surface of the lower column mortise and tenon section, the height of the angle steel is the same as that of the wood beam, and the channel steel one and the channel steel two are respectively attached to the surfaces of the adjacent wood beams.

[0014] The construction method of the special-shaped mortise and tenon steel-wood composite beam column joint comprises the following steps:

[0015] S1, the lower column is connected with the core tube through mortise and tenon connection, and the steel plate is connected with the lower column and the core tube through mortise and tenon connection;

[0016] S2, the wood beam is connected with the cross-shaped mortise and tenon type steel plate through mortise and tenon connection and is connected with the core tube;

[0017] S3, another cross-shaped mortise and tenon type steel plate passes through the core tube, and the side with the special-shaped web is fixed on the upper surface of the wood beam;

[0018] S4, the upper column is connected with the lower column, the core tube and the steel plate which has been connected through mortise and tenon connection in the opposite direction of S1.

[0019] S5, the steel sleeve is worn through the steel plate between and fits adjacent wood beam;

[0020] S6, the steel plate and the steel sleeve are fixed, and the node installation is completed.

[0021] Working principle: the central part of the lower column top is provided with a lower column mortise and tenon groove, which is used for mortise and tenon connection with the core tube, the core tube is provided with a plurality of special mortise holes around, the mortise holes correspond to the special mortise and tenon groove of the lower column, the core tube is stably fixed on the lower column through mortise and tenon connection, one end of the wood beam is provided with a special groove, which is used for mortise connection with the special web of the cross-shaped mortise and tenon steel plate, the cross-shaped mortise and tenon steel plate is composed of a cross-shaped flange and a special web, the special web is matched with the special groove of the wood beam, and the cross-shaped flange is provided with a plurality of square holes, the square holes are mortise connected with the mortise and tenon section of the lower column and the mortise and tenon section of the upper column, and the steel plate and the column are connected, the central part of the upper column bottom is provided with an upper column mortise and tenon groove, which corresponds to the special mortise hole of the core tube, and the mortise and tenon connection with the core tube is realized, the cross-shaped flange is also provided with a special mortise hole, which corresponds to the mortise and tenon grooves of the lower column and the upper column, and the stability of the connection is further enhanced, one side of the cross-shaped flange is provided with a mortise and tenon tenon, and the mortise and tenon tenon is mortise connected with the first mortise and tenon groove of the lower column and the upper column, and the stable connection in the horizontal direction is realized, the W-shaped steel sleeve is composed of channel steel I, channel steel II and angle steel, and is attached between two adjacent wood beams, the W-shaped steel sleeve not only enhances the connection strength between the wood beams, but also provides better rigidity for the whole structure through the unique structure shape.

[0022] Advantages: compared with the prior art, the present application has the following remarkable features:

[0023] 1、In the case of ensuring simple processing and good stress characteristics, the shortcomings of steel instability and wood anisotropy are overcome, and the advantages of steel assembly and the advantages of wood green environmental protection are fully retained, the characteristics of embedded steel structure are used, the bearing capacity of the structure is greatly improved, and the appearance of the whole wood structure is not damaged;

[0024] 2, the structure parts are prefabricated and transported in the factory, avoiding on-site welding, the standardization prefabrication is carried out in the factory, only simple installation is needed on site, which can be connected through bolts, shortening the construction period, most of the components are symmetrical components, the structure form and size are highly unified, the on-site assembly is more simple and convenient, the construction efficiency is further improved, the cost is reduced, and the resource utilization efficiency is improved;

[0025] 3, The core tube connects the upper column and the lower column, so that the pressure of the upper and lower columns is mainly borne by the core tube; the cross-shaped mortise and tenon steel plate and the W-shaped steel sleeve are arranged at the four sides of the wood beam respectively, and the wood beam is mainly connected with the upper and lower columns through the cross-shaped mortise and tenon steel plate, so that the pressure borne by the wood beam is greatly reduced, and the whole is reinforced by the steel structure, so that the node integrity is stronger, more stable, the bearing capacity of the node is improved, and a powerful guarantee is provided for the safety and durability of the building. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the present application;

[0027] Figure 2 is a structural schematic diagram of the lower column 1 of the present application;

[0028] Figure 3 is a structural schematic diagram of the upper column 2 of the present application;

[0029] Figure 4 is a structural schematic diagram of the wood beam 3 of the present application;

[0030] Figure 5 is a structural schematic diagram of one side of the steel plate 4 of the present application;

[0031] Figure 6 is a structural schematic diagram of the other side of the steel plate 4 of the present application;

[0032] Figure 7 is a structural schematic diagram of the core tube 6 of the present application;

[0033] Figure 8 is a structural schematic diagram of the steel sleeve 5 of the present application;

[0034] Figure 9 is a mounting flowchart of the present application. DETAILED DESCRIPTION

[0035] As Figure 1The steel-wood combined beam-column joint of the special-shaped mortise and tenon includes square wood beams 3 with a cross-sectional size of 200*400mm, steel plates 4 with a thickness of 5mm, and steel sleeves 5 with a wall thickness of 5mm, the core tubes 6 are located between the lower columns 1 and the upper columns 2 with a cross-sectional size of 400*400mm, the steel plates 4 are cross-shaped mortise and tenon steel plates 4, and the steel sleeves 5 are W-shaped steel sleeves. The lower columns 1 and the upper columns 2 are mortised through the core tubes 6, and the wood beams 3 are fixed between the upper columns 2 and the lower columns 1 through the steel plates 4. The number of the wood beams 3 and the steel sleeves 5 is four, and the four wood beams 3 are distributed in a cross shape, the steel sleeves 5 are fixed between two adjacent wood beams 3 through 10.9 high-strength bolts M10, and the upper and lower sides of each steel sleeve 5 are connected and fixed to the upper flanges and the lower flanges of the upper and lower steel plates 4 through bolts. Among them, the lower columns 1 and the upper columns 2 are the main supporting structures of the beam-column joint, which jointly support the entire structure and transfer the load from above or side, the introduction of the wood beams 3 makes the entire structure more lightweight, environmentally friendly, and improves the overall performance of the structure. The introduction of the steel plates 4 makes the connection of the entire beam-column joint more firm and stable, improves the bearing capacity and seismic performance of the joint. The introduction of the steel sleeves 5 significantly improves the bearing capacity of the entire beam-column joint, and improves the stiffness and stability of the joint. The design of the core tubes 6 makes the structure of the entire joint more compact and reasonable, and can effectively improve the overall performance of the joint.

[0036] As Figures 2-4The lower column 1 top center part of the section size 400*400mm is provided with a lower column mortise and tenon slot 11 with a lower column horizontal long side of 25mm and a short side of 20mm, the upper column 2 bottom center part is provided with an upper column mortise and tenon slot 21, one diagonal line of the lower column 1 and the upper column 2 is respectively provided with an L-shaped lower column horizontal side length of 60mm first mortise and tenon slot 13 and an upper column first mortise and tenon slot 23, and the two slots correspond to each other in the up-down direction, the lower column 1 top four corners are all fixedly installed with a lower column mortise and tenon section 12, and the upper column 2 bottom four corners are all fixedly installed with an upper column mortise and tenon section 22. The inner side of the lower column mortise and tenon section 12 is provided with a horizontal long side of 30mm and a short side of 15mm first dovetail mortise 121 and a first dovetail tenon 122, and the outer side of the upper column mortise and tenon section 22 is provided with a second dovetail mortise 221 and a second dovetail tenon 222, wherein the first dovetail mortise 121 and the second dovetail tenon 222 are mortised, and the first dovetail tenon 122 and the second dovetail mortise 221 are mortised. The height of the lower column mortise and tenon section 12 and the upper column mortise and tenon section 22 is 410mm, which is equal to the sum of the thickness of the wood beam 3 and the upper and lower cross-shaped flanges 41 thickness of the steel plate 4, one end of the wood beam 3 is provided with a tenon 31 with a short side of 70mm and a special-shaped slot 32. The lower column mortise and tenon slot 11 and the upper column mortise and tenon slot 21 are mortised and connected with the core tube 6, realizing stable connection in the vertical direction, the lower column first mortise and tenon slot 13 is mortised with the mortise and tenon head 413 of the steel plate 4 below the wood beam 3, enhancing the horizontal connection strength of the node, the upper column first mortise and tenon slot 23 is mortised with the mortise and tenon head 413 of the steel plate 4 above the wood beam 3, enhancing the horizontal connection strength of the node, the lower column mortise and tenon section 12 is mortised with the upper column mortise and tenon section 22 of the upper column 2, and is further reinforced and connected through the steel plate 4.

[0037] As Figures 5-6, the number of steel plates 4 is two, and they are symmetrically distributed on the upper and lower sides of the wooden beam 3. The steel plate 4 is composed of a cross-shaped flange 41 and a special-shaped web 42 with a bending angle of 20 degrees, which is matched with the special-shaped mortise and tenon joint 32, and the height of the special-shaped web 42 is 200mm, which is equal to half of the height of the wooden beam 3. The surface of the cross-shaped flange 41 is provided with four square holes 411 with a side length of 100mm and a special-shaped mortise hole 412. The square holes 411 are matched with the lower column mortise and tenon joint section 12 and the upper column mortise and tenon joint section 22, and the special-shaped mortise hole 412 corresponds to the lower column mortise and tenon joint groove 11 and the upper column mortise and tenon joint groove 21, which is used to accommodate the core tube 6 (with a side length of 100mm). The cross-shaped flange 41 is fixedly installed with a mortise and tenon joint tenon 413 with a horizontal side length of 60mm on one side, and the mortise and tenon joint tenon 413 is located on the opposite side of the cross-shaped flange 41. Among them, the mortise and tenon joint tenon 413 on the cross-shaped flange 41 of the steel plate 4 located below the wooden beam 3 is matched with the first mortise and tenon joint groove 13 of the lower column 1, and correspondingly, the mortise and tenon joint tenon 413 on the cross-shaped flange 41 of the steel plate 4 located above the wooden beam 3 is matched with the first mortise and tenon joint groove 23 of the upper column 2. The 5mm thick steel plate 4 not only plays a connecting role, but also matches the special-shaped web 42 with the special-shaped groove 32 of the wooden beam 3, thereby enhancing the stability and carrying capacity of the connection. At the same time, the square holes 411 and the special-shaped mortise hole 412 on the cross-shaped flange 41 are matched with the lower column mortise and tenon joint section 12 and the upper column mortise and tenon joint section 22 respectively, thereby further enhancing the connection strength of the node.

[0038] As Figure 7 , the core tube 6 is provided with a special-shaped mortise hole 61 with a horizontal long side of 25mm and a short side of 20mm around, which corresponds to the lower column mortise and tenon joint groove 11, the upper column mortise and tenon joint groove 21 and the special-shaped mortise hole 412 provided on the steel plate 4, thereby connecting the upper column 2, the lower column 1 and the steel plate 4 into a whole through mortise and tenon connection. The core tube 6 not only plays a role in connecting the lower column 1 and the upper column 2, but also connects with the steel plate 4 through the special-shaped mortise hole 61, thereby enhancing the overall performance of the node.

[0039] As Figure 8 , the steel sleeve 5 is composed of a channel steel one 51 with a cross-sectional area of 500×400mm, a channel steel two 52 with a cross-sectional area of 500×400mm and an angle steel 53 with a side length of 100mm and a height of 400mm. The angle steel 53 is located on the outer surface of the lower column mortise and tenon joint section 12, and its height is the same as that of the wooden beam 3. The channel steel one 51 and the channel steel two 52 are respectively attached to the surfaces of the two wooden beams 3 on the left and right of the corresponding lower column mortise and tenon joint section 12. The steel sleeve 5 with a wall thickness of 5mm not only enhances the connection strength between the wooden beams 3, but also provides a certain stiffness for the whole structure through its unique structure shape. At the same time, the steel sleeve 5 is also connected with the steel plate 4 through bolts, thereby further enhancing the overall performance of the node.

[0040] AsFigure 9 The construction method of the special-shaped mortise and tenon steel-wood composite beam-column joint, specifically comprises the following steps:

[0041] S1, the mortise and tenon connection between the lower column mortise and tenon groove 11 in the lower column 1 and the special-shaped mortise hole 61 in the core tube 6 is performed, and the special-shaped mortise hole 412 in the steel plate 4 and the 45-degree side plate part provided with an L-shaped mortise tenon are respectively aligned with the special-shaped mortise hole 61 in the lower column 1, the L-shaped lower column first mortise and tenon groove 13, and the lower column second mortise and tenon groove, and are fitted from top to bottom.

[0042] S2, the tenon 31 and the special-shaped mortise 32 provided on the wood beam 3 are aligned with the mortise hole formed between the core tube 6 and the lower column mortise and tenon section 12 and the special-shaped web plate 42 in the steel plate 4, and are mortise and tenon connected from top to bottom.

[0043] S3, another same steel plate 4 is fixed on the upper surface of the wood beam 3 through the core tube 6 on the side with the special-shaped web plate 42.

[0044] S4, the bottom of the upper column mortise and tenon section 22 is mortise and tenon connected from top to bottom to the lower column 1, the core tube 6 and the steel plate 4 according to the same steps in step one.

[0045] S5, the steel sleeve 5 is passed through between the two steel plates 4 and adheres to the two adjacent wood beams 3.

[0046] S6, the bolt is passed through the bolt holes reserved on the upper and lower flanges of the channel steel one 51 and the channel steel two 52 in the W-shaped steel sleeve 5 and the edges of the cross-shaped flange 41 in the two steel plates 4 to fix, and the joint installation is completed.

Claims

1. A steel-wood composite beam-column joint with a special-shaped mortise and tenon, characterized in that: The utility model provides a kind of steel-wood composite column, including lower column (1), upper column (2), wood beam (3), the connecting place of lower column (1), upper column (2) and wood beam (3) is provided steel plate (4), steel sleeve (5), lower column (1), upper column (2) are connected by mortise and tenon through core tube (6);The steel plate (4) is symmetrically distributed in the upper and lower sides of wood beam (3);The steel plate (4) includes cross-shaped flange (41) and special-shaped web (42), cross-shaped flange (41) is provided with special-shaped web (42) of cross-shaped distribution, special-shaped web (42) is inserted with wood beam (3), the height of special-shaped web (42) is half of wood beam (3) height, special-shaped web (42) is W-shaped, and special-shaped web (42) includes several mutually obtuse angle steel plates; The top of lower column (1) is provided with lower column mortise and tenon slot (11), the bottom of upper column (2) is provided with upper column mortise and tenon slot (21), and the diagonal lines of lower column (1) and upper column (2) are respectively provided with L-shaped and corresponding lower column first mortise and tenon slot (13) and upper column first mortise and tenon slot (23), the four corners of the top of lower column (1) are provided with lower column mortise and tenon section (12), and the four corners of the bottom of upper column (2) are provided with upper column mortise and tenon section (22); The end of wood beam (3) is provided with tenon (31) and special-shaped slot (32); Special-shaped web (42) is mortised with special-shaped slot (32), square holes (411) and first special-shaped mortise holes (412) are formed in the surface of cross-shaped flange (41), the square holes (411) are mortised with lower column mortise and tenon section (12) and upper column mortise and tenon section (22), the first special-shaped mortise holes (412) correspond to lower column mortise and tenon slot (11) and upper column mortise and tenon slot (21) and are used for accommodating core tube (6); The side of cross-shaped flange (41) different from special-shaped web (42) is provided with mortise and tenon tenon (413), the mortise and tenon tenon (413) is inserted with lower column first mortise and tenon slot (13), and the mortise and tenon tenon (413) is inserted with upper column first mortise and tenon slot (23); Wood beam (3) is cross-shaped, steel sleeve (5) is arranged between adjacent wood beams (3), and the two sides of steel sleeve (5) are connected with the upper flange and the lower flange of steel plate (4) respectively; Core tube (6) is provided with second special-shaped mortise holes (61) around, the second special-shaped mortise holes (61) correspond to lower column mortise and tenon slot (11), upper column mortise and tenon slot (21) and first special-shaped mortise holes (412), and upper column (2), lower column (1) and steel plate (4) are anchored into a whole through mortise and tenon connection; Steel sleeve (5) includes channel steel one (51), channel steel two (52) and angle steel (53), the angle steel (53) is located on the outer surface of lower column mortise and tenon section (12), and the height is same with wood beam (3), and channel steel one (51) and channel steel two (52) are respectively attached to the surface of adjacent wood beams (3).

2. The shaped mortise and tenon steel-wood composite beam-column joint according to claim 1, characterized in that: The inner side of the lower column mortise and tenon section (12) is provided with a first dovetail mortise (121) and a first dovetail tenon (122), the outer side of the upper column mortise and tenon section (22) is provided with a second dovetail mortise (221) and a second dovetail tenon (222), the first dovetail mortise (121) is connected with the second dovetail tenon (222), and the first dovetail tenon (122) is connected with the second dovetail mortise (221).

3. The shaped mortise and tenon steel-wood composite beam-column joint of claim 1, wherein: The height of the lower column mortise and tenon section (12) and the upper column mortise and tenon section (22) is the same, and is equal to the sum of the thickness of the wood beam (3) and the thickness of the upper and lower cross-shaped flanges (41) of the steel plate (4).

4. The construction method of the shaped mortise and tenon steel-wood composite beam-column joint according to any one of claims 1-3, characterized in that, The method comprises the following steps: S1, connecting the lower column (1) and the core tube (6) by mortise and tenon connection, and connecting the steel plate (4) and the lower column (1) and the core tube (6) by mortise and tenon connection; S2, connecting the wood beam (3) and the steel plate (4) by mortise and tenon connection and abutting against the core tube (6); S3, passing another steel plate (4) through the core tube (6), and fixing one side of the special-shaped web (42) on the upper surface of the wood beam (3); S4, connecting the upper column (2) and the lower column (1), the core tube (6) and the steel plate (4) which has been connected by mortise and tenon connection in the opposite direction of S1; S5, passing the steel sleeve (5) through the steel plate (4) and adhering to the adjacent wood beam (3); S6, fixing the steel plate (4) and the steel sleeve (5), and completing the installation of the joint.

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