CN215253636U - T-shaped combined wall connecting joint - Google Patents

Abstract

The utility model relates to a T-shaped combined wall connecting joint, wherein a first horizontal wall limb, a second horizontal wall limb and a third horizontal wall limb are fixedly connected through a T-shaped prefabricated connecting component; the first horizontal direction wall limb comprises a first horizontal direction inner leaf plate, an outer leaf plate and a cavity; the second horizontal direction wall limb comprises a second horizontal direction inner leaf plate, an outer leaf plate and a cavity; the third horizontal direction wall limb comprises two third horizontal direction leaf plates and a cavity; the T-shaped prefabricated connecting component comprises a middle part, a first extending end part, a second extending end part, a third extending end part, a first plate body, a first cavity, a lap joint area, a first connecting piece and a second cavity; one end of each horizontal connecting piece I, the second horizontal connecting piece II and the third horizontal connecting piece III extends into the first, the second and the third horizontal cavities, and the other end extends into the second cavity. The original mode of building a scaffold and a formwork on site is replaced by the T-shaped prefabricated connecting component, the whole structure serves as the original template, and the binding and hoisting workload of complex reinforcing steel bars on site is reduced.

Description

T-shaped combined wall connecting joint

Technical Field

The utility model relates to an assembly type structure technical field especially relates to T type combination wall body connected node.

Background

Because the fabricated building has the characteristics of green construction, environmental protection, high efficiency and the like, the fabricated building is vigorously developed in recent years. The state also goes through a plurality of policies such as 'guidance opinions about the vigorous development of the fabricated building', and strives for 2025 years, so that the fabricated building occupies 30% of the area of a newly built building. Therefore, the development of the assembly type building is promoted comprehensively, and the development becomes a great importance in the building industry of each province and even the whole country.

In the existing fabricated building, the reinforcing steel bars at the edge member position are generally complex, and an external scaffold and an external template need to be subsequently erected.

For the cast-in-place outer wall of the edge member, an outer wall scaffold and an outer template are required during construction, so that the construction cost and the construction difficulty are increased. For the outer wall with the local edge member prefabricated together with the wall, the corner connection part of the wall body (such as the external corner of the outer wall) is easy to have the problem of mold expansion when concrete is poured on site. In addition, at present, in all the assembly type construction, the reinforcing steel bars at the edge component parts are required to be bound on site; the reinforcing steel bars of the edge members are the most complicated areas in the wall body, so that the workload of a construction site is further increased.

Therefore, the application provides a T-shaped combined wall connecting node.

SUMMERY OF THE UTILITY MODEL

To address at least one of the above-mentioned technical problems, the present disclosure provides a T-shaped composite wall connection node.

The utility model discloses a technical scheme be like:

the T-shaped combined wall body connecting joint comprises a first horizontal direction wall limb, a T-shaped prefabricated connecting component, a second horizontal direction wall limb and a third horizontal direction wall limb, wherein the first horizontal direction is opposite to the second horizontal direction, the third horizontal direction wall limb is vertical to the first horizontal direction and the second horizontal direction, and the first horizontal direction wall limb, the second horizontal direction wall limb and the third horizontal direction wall limb are fixedly connected into a whole through the T-shaped prefabricated connecting component;

the first horizontal direction wall limb comprises a first horizontal direction inner leaf plate and a first horizontal direction outer leaf plate, and a first horizontal direction cavity is formed between the first horizontal direction inner leaf plate and the first horizontal direction outer leaf plate;

the second horizontal direction wall limb comprises a second horizontal direction inner leaf plate and a second horizontal direction outer leaf plate, and a second horizontal direction cavity is formed between the second horizontal direction inner leaf plate and the second horizontal direction outer leaf plate;

the third horizontal direction wall limb comprises two third horizontal direction leaf plates, and a third horizontal direction cavity is formed between the two third horizontal direction leaf plates;

the T-shaped prefabricated connecting component comprises an intermediate part, the intermediate part extends towards the first horizontal direction, the second horizontal direction and the third horizontal direction respectively to form a first extending end part, a second extending end part and a third extending end part respectively, the first extending end part, the second extending end part and the third extending end part respectively comprise two vertical first plate bodies which are oppositely arranged, a first cavity and a lap joint area are arranged between the two first plate bodies which are oppositely arranged, the two first plate bodies which are oppositely arranged are fixedly connected through a first connecting piece, the intermediate part is provided with a second cavity, and the second cavity is communicated with the first cavity and is larger than the first cavity;

the first horizontal connecting piece is in lap joint with the first connecting piece, one end of the first horizontal connecting piece extends into the first horizontal cavity, and the other end of the first horizontal connecting piece extends into the second cavity through the lap joint area;

the second horizontal connecting piece is in lap joint with the first connecting piece, one end of the second horizontal connecting piece extends into the second horizontal cavity, and the other end of the second horizontal connecting piece extends into the second cavity through the lap joint area;

and the third horizontal connecting piece is in lap joint with the first connecting piece, one end of the third horizontal connecting piece extends into the third horizontal direction cavity, and the other end of the third horizontal connecting piece extends into the second cavity through the lap joint area.

Preferably, vertical connecting pieces are arranged in the first horizontal cavity, the second horizontal cavity, the third horizontal cavity and the second cavity, and the vertical connecting pieces are used for being in lap joint with the first horizontal connecting piece, the second horizontal connecting piece and the third horizontal connecting piece.

Preferably, the first horizontal connecting piece, the second horizontal connecting piece and the third horizontal connecting piece are of a closed structure made of steel bars, the vertical connecting piece is a vertical steel bar, and the vertical connecting piece vertically penetrates through the first closed horizontal connecting piece, the second closed horizontal connecting piece and the third closed horizontal connecting piece.

Preferably, two ends of the first connecting piece are respectively welded and fixed with the two first plate bodies.

Preferably, two ends of the first connecting piece are respectively fixedly connected with the two first plate bodies through threads.

Preferably, the two first plate bodies arranged oppositely are provided with first grooves which are sunken inwards, two ends of the first connecting piece penetrate through the first grooves and are connected with first nuts in a threaded mode, and the first nuts are located in the first grooves to achieve fixed connection.

Preferably, one end of the first connecting piece is fixedly connected with one of the first plate bodies in a threaded manner, the other end of the first connecting piece penetrates through the other first plate body, the other first plate body is provided with an inward-recessed first groove, the other end of the first connecting piece penetrates through the first groove and is connected with a first nut in a threaded manner, and the first nut is positioned in the first groove to realize fixed connection.

Preferably, both ends of the first connecting piece do not exceed the corresponding first plate body.

Preferably, the surfaces of the inner sides of the middle part, the first extending end part, the second extending end part and the third extending end part are provided with a building fire-proof layer, and the surfaces of the outer sides of the middle part, the first extending end part and the second extending end part are provided with a building fire-proof layer; or the surfaces of the inner sides of the middle part, the first extending end part, the second extending end part and the third extending end part are provided with concrete structure fire-proof layers, and the surfaces of the outer sides of the middle part, the first extending end part and the second extending end part are provided with concrete structure fire-proof layers.

Preferably, the middle portion, the first extension end portion, the inner side surface of the second extension end portion, and the third extension end portion are surface-mounted with a building fire protection layer or a concrete structure fire protection layer; and the outer side surfaces of the middle part, the first extending end part and the second extending end part are sequentially provided with a heat insulation layer and a decoration layer.

To sum up, the utility model discloses in, replaced the mode of original on-the-spot scaffold frame, formwork through the prefabricated connecting elements of T type, reduced the work load of buildding, and simultaneously, first extension tip among the prefabricated connecting elements of T type, the second extends the tip, the third extends tip and middle part and is the cavity structure, the whole role that has both acted as original template of structure, can replace the complicated reinforcing bar of original on-the-spot ligature again, the ligature volume and the hoist and mount work load of both having reduced the complicated reinforcing bar of on-the-spot, replaced original steel reinforcement cage again and carried out the atress, overall structure is reliable and stable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a top view of a first configuration of the present invention;

FIG. 2 is a top view of a second configuration of the present invention;

fig. 3 is a plan view of embodiment 6 of the present invention;

fig. 4 is a plan view of embodiment 7 of the present invention;

FIG. 5 is a top view of a first construction of a T-shaped prefabricated connecting element according to the present invention;

FIG. 6 is a top view of a second construction of the T-shaped prefabricated coupling elements of the present invention;

FIG. 7 is a top view of a third structure of the T-shaped prefabricated connecting member according to the present invention;

fig. 8 is a top view of a fourth structure of the T-shaped prefabricated connecting member of the present invention.

The labels in the figure are: 1 is a first horizontal wall limb, 2 is a T-shaped prefabricated connecting component, 3 is a second horizontal wall limb, 4 is a third horizontal wall limb, 5 is a first horizontal inner leaf, 6 is a first horizontal outer leaf, 7 is a first horizontal cavity, 8 is a second horizontal inner leaf, 9 is a second horizontal outer leaf, 10 is a second horizontal cavity, 11 is a third horizontal leaf, 12 is a third horizontal cavity, 13 is a middle part, 14 is a first extending end, 15 is a second extending end, 16 is a third extending end, 17 is a first plate body, 18 is a first cavity, 19 is a lap joint area, 20 is a first connecting piece, 21 is a second cavity, 22a is a first horizontal connecting piece, 22b is a second horizontal connecting piece, 22c is a third horizontal connecting piece, 23 is a vertical connecting piece, 24 is a first groove, 25 is a first nut, 26 is a building fire-proof layer, 27 is a concrete structure fire-proof layer, 28 is an insulating layer, 29 is a decorative layer, and 30 is a threaded sleeve.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1 and 5, the T-shaped combined wall connection node includes a first horizontal wall limb 1, a T-shaped prefabricated connection member 2, a second horizontal wall limb 3, and a third horizontal wall limb 4, wherein the first horizontal direction is opposite to the second horizontal direction, the third horizontal wall limb 4 is perpendicular to the first horizontal direction and the second horizontal direction, and the first horizontal wall limb 1, the second horizontal wall limb 3, and the third horizontal wall limb 4 are fixedly connected as a whole through the T-shaped prefabricated connection member 2;

the first horizontal direction wall limb 1 comprises a first horizontal direction inner leaf plate 5 and a first horizontal direction outer leaf plate 6, a first horizontal direction cavity 7 is formed between the first horizontal direction inner leaf plate 5 and the first horizontal direction outer leaf plate 6, the first horizontal direction inner leaf plate 5 and the first horizontal direction outer leaf plate 6 are connected into a whole through vertical steel bars and horizontal steel bars, and the horizontal steel bars penetrate through the first horizontal direction cavity 7;

the second horizontal direction wall limb 3 comprises a second horizontal direction inner leaf plate 8 and a second horizontal direction outer leaf plate 9, a second horizontal direction cavity 10 is formed between the second horizontal direction inner leaf plate 8 and the second horizontal direction outer leaf plate 9, the second horizontal direction inner leaf plate 8 and the second horizontal direction outer leaf plate 9 are connected into a whole through vertical steel bars and horizontal steel bars, and the horizontal steel bars penetrate through the second horizontal direction cavity 10;

the third horizontal direction wall limb 4 comprises two third horizontal direction leaf plates 11, a third horizontal direction cavity 12 is arranged between the two third horizontal direction leaf plates 11, the two third horizontal direction leaf plates 11 are connected into a whole through vertical steel bars and horizontal steel bars, and the horizontal steel bars penetrate through the third horizontal direction cavity 12;

the T-shaped prefabricated connecting component 2 comprises an intermediate part 13, wherein the intermediate part 13 extends towards a first horizontal direction, a second horizontal direction and a third horizontal direction respectively and forms a first extending end part 14, a second extending end part 15 and a third extending end part 16 respectively, the first extending end part 14, the second extending end part 15 and the third extending end part 16 respectively comprise two vertical first plate bodies 17 which are oppositely arranged, a first cavity 18 and an overlapping area 19 are arranged between the two first plate bodies 17 which are oppositely arranged, the two first plate bodies 17 which are oppositely arranged are fixedly connected through a first connecting piece 20, the intermediate part 13 is provided with a second cavity 21, and the second cavity 21 is communicated with the first cavity 18 and is larger than the first cavity 18; the first plate body 17 is a vertical steel plate, the middle part 13 is composed of a vertical steel plate and two bent vertical steel plates to form a T shape, the bending angle of the two bent vertical steel plates is 90 degrees, the rigidity of the steel plates is high, and the problem of mold expansion can be avoided, the first plate body 17 on one side of the first extending end part 14 and the second extending end part 15 and the vertical steel plate of the middle part 13 are in an integrated structure, and the first plate body 17 on the other side of the first extending end part 14 and the second extending end part 15 and the bent vertical steel plate of the middle part 13 are in an integrated structure respectively;

the first horizontal connecting piece 22a is in lap joint with the first connecting piece 20, the first horizontal connecting piece 22a can be a steel plate or a steel bar, and is specifically a horizontally arranged steel bar, one end of the first horizontal connecting piece 22a extends into the first horizontal cavity 7, the other end of the first horizontal connecting piece 22a extends through the lap joint area 19 and enters the second cavity 21, and the other end of the first horizontal connecting piece 22a is fixedly connected with the horizontal steel bar penetrating through the first horizontal cavity 7;

the second horizontal connecting piece 22b, the second horizontal connecting piece 22b is lapped with the first connecting piece 20, the second horizontal connecting piece 22b can be a steel plate or a steel bar, and is specifically a horizontally arranged steel bar, one end of the second horizontal connecting piece 22b extends into the second horizontal cavity 10, the other end of the second horizontal connecting piece 22b extends through the lapping area 19 and enters the second cavity 21, and the other end of the second horizontal connecting piece 22b is fixedly connected with the horizontal steel bar which passes through the second horizontal cavity 10;

and a third horizontal connecting piece 22c, wherein the third horizontal connecting piece 22c is lapped with the first connecting piece 20, the third horizontal connecting piece 22c can be a steel plate or a steel bar, and is specifically a horizontally arranged steel bar, one end of the third horizontal connecting piece 22c extends into the third horizontal cavity 12, the other end of the third horizontal connecting piece 22c extends through the lapping area 19 and enters the second cavity 21, and the other end of the third horizontal connecting piece 22c is fixedly connected with the horizontal steel bar penetrating through the third horizontal cavity 12.

Further, vertical connecting pieces 23 are arranged in the first horizontal cavity 7, the second horizontal cavity 10, the third horizontal cavity 12 and the second cavity 21, the vertical connecting pieces 23 are specifically vertically arranged steel bars, and the vertical connecting pieces 23 are used for being lapped with corresponding first horizontal connecting pieces 22a, second horizontal connecting pieces 22b and third horizontal connecting pieces 22 c; the first horizontal connecting piece 22a, the second horizontal connecting piece 22b and the third horizontal connecting piece 22c are of a closed structure made of steel bars, the vertical connecting piece 23 is a vertical steel bar, and the vertical connecting piece 23 vertically penetrates through the corresponding first closed horizontal connecting piece 22a, the second horizontal connecting piece 22b and the third horizontal connecting piece 22c, so that the connection between the vertical connecting piece 23 and the first horizontal connecting piece 22a, the second horizontal connecting piece 22b and the third horizontal connecting piece 22c is firmer, and further the connection and fixation between the first horizontal direction wall limb 1, the T-shaped prefabricated connecting component 2, the second horizontal direction wall limb 3 and the third horizontal direction wall limb 4 are more reliable.

After the first horizontal direction wall limb 1, the T-shaped prefabricated connecting component 2, the second horizontal direction wall limb 3 and the third horizontal direction wall limb 4 are installed on site, concrete can be poured into the first horizontal direction cavity 7, the second horizontal direction cavity 10, the third horizontal direction cavity 12, the first cavity 18 and the second cavity 21, and the node is further solidified into a whole.

Example 2

As shown in fig. 5, on the basis of embodiment 1, two ends of the first connecting member 20 are respectively welded and fixed to the two first plate bodies 17, in this embodiment, the two ends of the first connecting member 20 are both welded to the inner sides of the two first plate bodies 17, where "inner side" refers to a side contacting the first cavity 18, and both ends of the first connecting member 20 do not exceed the corresponding first plate bodies 17, so that during subsequent decoration, fire prevention, or heat preservation construction, no avoiding hole needs to be formed, and construction is facilitated.

Example 3

As shown in fig. 6, on the basis of embodiment 1, two ends of the first connecting member 20 are respectively fixed to the two first plate bodies 17 in a threaded connection manner, in this embodiment, the inner sides of the two first plate bodies 17 are both welded and fixed with threaded sleeves 30, where the "inner side" refers to a side contacting with the first cavity 18, two ends of the first connecting member 20 are provided with external threads to realize the threaded fixed connection, and two ends of the first connecting member 20 do not exceed the corresponding first plate bodies 17, so that during subsequent decoration, fire prevention or heat preservation construction, no avoiding hole needs to be formed, and construction is facilitated.

Example 4

As shown in fig. 7, on the basis of embodiment 1, the two first plate bodies 17 arranged oppositely each have an inwardly recessed first groove 24, the first groove 24 has a through hole, the two ends of the first connecting member 20 penetrate through the through holes on the corresponding first grooves 24 and are respectively in threaded connection with a first nut 25, the first nuts 25 are located in the first grooves 24 to realize fixed connection, and the two ends of the first connecting member 20 and the first nuts 25 do not exceed the corresponding first plate bodies 17, so that during subsequent decoration, fire prevention or heat preservation construction, no avoiding hole needs to be formed, and construction is facilitated.

Example 5

As shown in fig. 8, on the basis of embodiment 1, one end of the first connecting member 20 is fixedly connected with one of the first plate bodies 17 by a thread, a threaded sleeve 30 is fixedly welded on the inner side of the first plate body 17, where "inner side" refers to the side contacting with the first cavity 18, and the end of the first connecting member 20 has an external thread to realize the thread fixed connection; the other end of the first connecting piece 20 passes through another first plate body 17, the other first plate body 17 is provided with a first groove 24 which is sunken inwards, the first groove 24 is provided with a through hole, the other end of the first connecting piece 20 passes through the through hole on the first groove 24 and is in threaded connection with a first nut 25, and the first nut 25 is positioned in the first groove 24 to realize fixed connection; the two ends of the first connecting piece 20 and the first nut 25 do not exceed the corresponding first plate body 17, so that no avoiding hole needs to be formed during subsequent decoration or heat preservation construction, and construction is facilitated.

Example 6

As shown in fig. 3, in addition to embodiments 2, 3, 4, or 5, the inner surfaces of the intermediate portion 13, the first extending end portion 14, the second extending end portion 15, and the third extending end portion 16 are surface-mounted with the building fire protection layer 26, and the outer surfaces of the intermediate portion 13, the first extending end portion 14, and the second extending end portion 15 are surface-mounted with the building fire protection layer 26.

Example 7

As shown in fig. 4, in addition to embodiments 2, 3, 4, or 5, the concrete structure fire-proof layer 27 is attached to the surface of the inner side of the intermediate portion 13, the first extending end portion 14, the second extending end portion 15, and the third extending end portion 16, and the concrete structure fire-proof layer 27 is attached to the surface of the outer side of the intermediate portion 13, the first extending end portion 14, and the second extending end portion 15.

Example 8

As shown in fig. 1, in addition to embodiments 2, 3, 4 or 5, the surfaces of the middle portion 13, the first extending end portion 14, the inner side surface of the second extending end portion 15 and the third extending end portion 16 are provided with the building fire-proof layer 26; the insulating layer 28 and the decorative layer 29 are attached to the outer surfaces of the intermediate portion 13, the first extended end portion 14, and the second extended end portion 15 in this order.

Example 9

As shown in fig. 2, in the embodiment 2, 3, 4 or 5, the surfaces of the middle portion 13, the first extending end portion 14, the inner side surface of the second extending end portion 15 and the third extending end portion 16 are provided with the fire-proof layer 27 of the concrete structure; the insulating layer 28 and the decorative layer 29 are attached to the outer surfaces of the intermediate portion 13, the first extended end portion 14, and the second extended end portion 15 in this order.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. T type combination wall body connected node, its characterized in that: the wall column comprises a first horizontal direction wall column (1), a T-shaped prefabricated connecting component (2), a second horizontal direction wall column (3) and a third horizontal direction wall column (4), wherein the first horizontal direction is opposite to the second horizontal direction, the third horizontal direction wall column (4) is vertical to the first horizontal direction and the second horizontal direction, and the first horizontal direction wall column (1), the second horizontal direction wall column (3) and the third horizontal direction wall column (4) are fixedly connected into a whole through the T-shaped prefabricated connecting component (2);

   the first horizontal direction wall limb (1) comprises a first horizontal direction inner leaf plate (5) and a first horizontal direction outer leaf plate (6), and a first horizontal direction cavity (7) is arranged between the first horizontal direction inner leaf plate and the first horizontal direction outer leaf plate;

   the second horizontal direction wall limb (3) comprises a second horizontal direction inner leaf plate (8) and a second horizontal direction outer leaf plate (9), and a second horizontal direction cavity (10) is arranged between the second horizontal direction inner leaf plate and the second horizontal direction outer leaf plate;

   the third horizontal direction wall limb (4) comprises two third horizontal direction leaf plates (11), and a third horizontal direction cavity (12) is formed between the two third horizontal direction leaf plates (11);

   the T-shaped prefabricated connecting component (2) comprises a middle part (13), the middle part (13) extends towards the first horizontal direction, the second horizontal direction and the third horizontal direction respectively and forms a first extending end part (14), a second extending end part (15) and a third extending end part (16) respectively, the first extending end part (14), the second extending end part (15) and the third extending end part (16) respectively comprise two vertical first plate bodies (17) which are oppositely arranged, a first cavity (18) and a lap joint area (19) are arranged between the two first plate bodies (17) which are oppositely arranged, the two first plate bodies (17) which are oppositely arranged are fixedly connected through a first connecting piece (20), the intermediate portion (13) having a second cavity (21), the second cavity (21) communicating with the first cavity (18) and being larger than the first cavity (18);

   the first horizontal connecting piece (22a) is in lap joint with the first connecting piece (20), one end of the first horizontal connecting piece (22a) extends into the first horizontal cavity (7), and the other end of the first horizontal connecting piece (22a) extends into the second cavity (21) through the lap joint area (19);

   the second horizontal connecting piece (22b) is in lap joint with the first connecting piece (20), one end of the second horizontal connecting piece (22b) extends into the second horizontal cavity (10), and the other end of the second horizontal connecting piece (22b) extends into the second cavity (21) through the lap joint area (19);

   and the third horizontal connecting piece (22c) is in lap joint with the first connecting piece (20), one end of the third horizontal connecting piece (22c) extends into the third horizontal cavity (12), and the other end of the third horizontal connecting piece (22c) extends into the second cavity (21) through the lap joint area (19).
2. 2. The T-shaped composite wall connecting node of claim 1, wherein: vertical connecting pieces (23) are arranged in the first horizontal cavity (7), the second horizontal cavity (10), the third horizontal cavity (12) and the second cavity (21), and the vertical connecting pieces (23) are used for being lapped with the corresponding first horizontal connecting pieces (22a), second horizontal connecting pieces (22b) and third horizontal connecting pieces (22 c).
3. 3. The T-shaped composite wall connecting node of claim 2, wherein: the horizontal connecting piece I (22a), the horizontal connecting piece II (22b) and the horizontal connecting piece III (22c) are of a closed structure made of steel bars, the vertical connecting piece (23) is vertical steel bars, and the vertical connecting piece (23) vertically penetrates through the closed horizontal connecting piece I (22a), the closed horizontal connecting piece II (22b) and the closed horizontal connecting piece III (22 c).
4. 4. The T-shaped combined wall connecting node as claimed in claim 3, wherein: and two ends of the first connecting piece (20) are respectively welded and fixed with the two first plate bodies (17).
5. 5. The T-shaped combined wall connecting node as claimed in claim 3, wherein: two ends of the first connecting piece (20) are respectively fixedly connected with the two first plate bodies (17) in a threaded manner.
6. 6. The T-shaped combined wall connecting node as claimed in claim 3, wherein: the two oppositely arranged first plate bodies (17) are provided with inwards sunken first grooves (24), two ends of the first connecting piece (20) penetrate through the corresponding first grooves (24) and are in threaded connection with first nuts (25), and the first nuts (25) are located in the first grooves (24) to achieve fixed connection.
7. 7. The T-shaped combined wall connecting node as claimed in claim 3, wherein: one end of the first connecting piece (20) is fixedly connected with one of the first plate bodies (17) in a threaded manner, the other end of the first connecting piece penetrates through the other first plate body (17), the other first plate body (17) is provided with a first concave groove (24), the other end of the first connecting piece (20) penetrates through the first concave groove (24) and is connected with a first nut (25) in a threaded manner, and the first nut (25) is positioned in the first concave groove (24) to realize fixed connection.
8. 8. The T-shaped combined wall connecting node as claimed in any one of claims 4 to 7, wherein: both ends of the first connecting piece (20) do not exceed the corresponding first plate body (17).
9. 9. The T-shaped composite wall connecting node of claim 8, wherein: the surfaces of the inner sides of the middle part (13), the first extending end part (14), the second extending end part (15) and the third extending end part (16) are provided with building fire-proof layers (26), and the surfaces of the outer sides of the middle part (13), the first extending end part (14) and the second extending end part (15) are provided with building fire-proof layers (26); or the surfaces of the inner sides of the middle part (13), the first extending end part (14), the second extending end part (15) and the third extending end part (16) are provided with a concrete structure fireproof layer (27), and the surfaces of the outer sides of the middle part (13), the first extending end part (14) and the second extending end part (15) are provided with the concrete structure fireproof layer (27).
10. 10. The T-shaped composite wall connecting node of claim 8, wherein: the surface of the inner side of the middle part (13), the surface of the first extending end part (14), the surface of the inner side of the second extending end part (15) and the surface of the third extending end part (16) are provided with a building fire-proof layer (26) or a concrete structure fire-proof layer (27); and the outer side surfaces of the middle part (13), the first extending end part (14) and the second extending end part (15) are sequentially provided with an insulating layer (28) and a decorative layer (29).

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