Double-t beam outer wall connecting structure of prefabricated building

Abstract

The utility model relates to prefabricated building technical field especially a kind of double T plate outer wall connecting structure of prefabricated building. The double T plate outer wall connecting structure of prefabricated building includes the main structure of prefabricated building, the outer side of main structure is equipped with multiple vertical side-by-side double T plates, double T plate includes panel and rib column, the position of panel corresponding rib column is equipped with embedded part one, rib column is set to outside, its bottom is equipped with embedded part two, main structure includes foundation, ground beam and floor beam, the top of ground beam is equipped with embedded part three connected with embedded part two, floor beam is equipped with embedded part four, embedded part four is connected with embedded part one by connecting piece one. Through the reasonable design of embedded part and connecting piece, ensure the effective transmission of vertical and horizontal load, improve the anti-seismic and wind-resistant performance of overall structure, the application of horizontal long circular hole and antifriction material of connecting piece, realize the flexible connection of double T plate and main structure, effectively release horizontal displacement, reduce additional internal force, avoid connection failure.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a double-T panel external wall connection structure for prefabricated buildings. Background Technology

[0002] Currently, in prefabricated buildings, the connection between the exterior wall panels and the main structure is mostly achieved by bolting or welding, or a combination of both. However, in practice, the connection points are often fixed, meaning that there is no relative deformation between the exterior wall panels and the main structure. This prevents the main structure from freely deforming laterally and horizontally, creating additional forces on both the exterior wall panels and the main structure, which can easily lead to connection failure and damage.

[0003] Double-T slabs are generally used in building floors or roofs as horizontal load-bearing components. Due to the large market demand for double-T slabs, the inventory of molds for their production is also substantial. Applying double-T slabs to exterior walls could further increase the production capacity of existing molds. Patent CN217517797U discloses a fully prefabricated multi-story frame building, with accompanying drawings illustrating the use of double-T slabs as exterior walls. Patent CN217439150U discloses a prefabricated building exterior wall panel connection structure, further revealing the arrangement and connection relationships of double-T slab exterior walls. However, in practical applications, using existing connection methods for double-T slabs as exterior walls can easily lead to bending deformation or even damage, and it also hinders the free deformation of the main structure, which is not permitted by national regulations. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem that the existing technology of using double T-plates as the external wall connection method in the background art is prone to bending deformation or even damage, a double T-plate external wall connection structure for prefabricated buildings is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a double-T plate exterior wall connection structure for prefabricated buildings, including the main structure of the prefabricated building, with multiple vertically arranged double-T plates on the outer side of the main structure, each double-T plate including a panel and ribs, with a pre-embedded part one on the panel corresponding to the position of the rib, the rib facing outwards and having a pre-embedded part two at its bottom, the main structure including a foundation, a ground beam and a floor beam, the top of the ground beam having a pre-embedded part three connected to the pre-embedded part two, and the floor beam having a pre-embedded part four, the pre-embedded part four being connected to the pre-embedded part one through a connector one.

[0006] By vertically arranging double-T panels side-by-side on the outside of the main structure, the outward-facing ribs are fully utilized, enhancing the rhythm and aesthetics of the exterior wall facade while facilitating factory prefabrication and rapid on-site installation. Embedded parts one on the panels correspond to the rib positions, ensuring precise positioning of the connection points and improving connection reliability and construction efficiency. Embedded parts two at the bottom of the ribs connect to embedded parts three at the top of the ground beam, forming a stable bottom support and effectively transferring vertical loads to the foundation. Embedded parts four on the floor beams connect to embedded parts one via connector one, achieving a flexible connection between the double-T panels and the main structure, allowing relative displacement in the horizontal direction (X-direction) and eliminating additional internal forces.

[0007] According to one embodiment of the present invention, a steel pad is connected between the second and third embedded parts.

[0008] By setting a steel pad between embedded part two and embedded part three, the horizontality and verticality of the double T plate can be adjusted to ensure installation accuracy and enhance the stability of the connection.

[0009] According to one embodiment of the present invention, the embedded part is a hook bolt or a sleeve bolt.

[0010] The first embedded part uses hook bolts or sleeve bolts to facilitate bolt connection with the first connecting part, while providing sufficient tensile and compressive strength to ensure a firm connection.

[0011] According to one embodiment of the present invention, the connector is L-shaped and includes a vertical part and a horizontal part. The horizontal part is welded to the embedded part 4. The vertical part has a horizontal elongated hole for a bolt to pass through, and the bolt is connected to the embedded part 1.

[0012] The L-shaped structure of connector one is divided into a vertical part and a horizontal part. The horizontal part is welded to the embedded part four, providing stable Y-direction constraint; the horizontal elongated hole in the vertical part allows X-direction displacement release, reducing the impact of structural deformation on the connection. The elongated hole design allows the bolt to slide horizontally within the hole, adapting to the horizontal lateral movement of the main structure and avoiding stress concentration caused by rigid connection.

[0013] According to one embodiment of the present invention, a partition plate and a sliding isolation plate are provided between the nut of the bolt and the vertical part.

[0014] By placing a partition and a sliding isolator between the nut and the vertical part, the bolt and the L-shaped connector can slide together, while protecting the bolt and the L-shaped connector from wear.

[0015] Another technical solution adopted by this utility model to solve its technical problem is: a double-T slab exterior wall connection structure for prefabricated buildings, including the main structure of the prefabricated building, with multiple vertically arranged double-T slabs on the outer side of the main structure, each double-T slab including a panel and ribs, with a pre-embedded part one at the position of the panel corresponding to the rib, the rib facing outwards and having a pre-embedded part two at its bottom, the main structure including a foundation, a ground beam and a floor beam, the top of the ground beam having a pre-embedded part three, the pre-embedded part three being connected to the pre-embedded part two through a connector two; the floor beam having a pre-embedded part five, the pre-embedded part five being connected to the pre-embedded part one through a connector three.

[0016] The double-T slab is suspended from the floor beam via embedded parts one and five, suitable for tension-bearing scenarios, preventing the double-T slab from bending under pressure, and suitable for multi-story buildings. Connector two allows for bottom XZ-axis displacement release and Y-axis fixation; connector three provides upper fixed connection. The entire exterior wall panel achieves a flexible connection with the main structure, avoiding the impact of structural deformation on the double-T slab.

[0017] According to one embodiment of the present invention, the connecting member three is a steel bracket, and a steel pad two is connected between the steel bracket and the embedded member five.

[0018] Connector three uses a steel bracket, resting on the embedded part five on the top of the floor beam, providing stable XYZ three-dimensional constraints to ensure effective transmission of vertical loads. Steel pad two is used to adjust the levelness of the steel bracket, ensuring connection accuracy and stability.

[0019] According to one embodiment of the present invention, the second connector has an L-shaped structure, including a longitudinal part and a transverse part. The transverse part is welded to the third embedded part. The longitudinal part has a horizontal elongated hole for the bolt to pass through. The bolt is connected to the second embedded part. A partition and a sliding isolation plate are provided between the nut of the bolt and the longitudinal part.

[0020] The longitudinal part of connector two has a horizontal elongated hole to allow X-axis displacement release; the transverse part is welded to embedded part three to provide stable Y-axis constraint. A sliding isolating plate ensures smooth displacement release.

[0021] According to one embodiment of the present invention, the second embedded part is a hook bolt or a sleeve bolt.

[0022] The second embedded part uses hook bolts or sleeve bolts to facilitate connection with the second connecting part and provide reliable tensile and compressive strength.

[0023] According to one embodiment of the present invention, the panel includes an inner page layer, an insulation layer and an outer page layer, which are connected by pins, and a window is provided in the panel area between the ribs.

[0024] The panel consists of an inner layer, an insulation layer, and an outer layer, connected by pins to form a high-efficiency insulation system that meets building energy conservation requirements. Windows are opened in the panel area between the ribs to enhance the rhythm of the facade and the lighting effect, while reducing the self-weight of the wall.

[0025] The beneficial effects of this utility model are:

[0026] (1) By rationally designing embedded parts and connectors, the effective transfer of vertical and horizontal loads is ensured, thereby improving the seismic and wind resistance performance of the overall structure;

[0027] (2) By using the horizontal elongated hole of the connector and the application of friction-reducing material, a flexible connection between the double T plate and the main structure is achieved, which effectively releases horizontal displacement, reduces additional internal force, and avoids connection failure.

[0028] (3) Whether to use a bottom-supported compression connection or a top-suspended tension connection, it can be adapted to different floor heights according to actual needs, providing a flexible connection solution;

[0029] (4) The factory-prefabricated double-T slabs combined with standardized connectors greatly improve construction speed and quality, and reduce overall costs;

[0030] (5) The sandwich panel design meets the insulation requirements, and the windows between the ribs enhance the aesthetics of the facade. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0033] Figure 2 yes Figure 1 A schematic diagram of the vertical structure of the double-T plate.

[0034] Figure 3 yes Figure 1 A schematic diagram of the structure along the AA direction.

[0035] Figure 4 yes Figure 1 A schematic diagram of the structure in the BB direction.

[0036] Figure 5 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0037] Figure 6 yes Figure 5 A schematic diagram of the structure in the CC direction.

[0038] Figure 7 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0039] Figure 8 yes Figure 7 A schematic diagram of the structure in the DD direction.

[0040] Figure 9 China is Figure 7 A schematic diagram of the structure in the EE direction.

[0041] Figure 10 This is a structural schematic diagram of Embodiment 4 of this utility model.

[0042] In the diagram: 1. Foundation; 2. Ground beam; 3. Side column; 31. Corbel; 4. Floor beam; 41. Protruding part; 5. Double T-plate; 51. Panel; 511. Inner layer; 512. Insulation layer; 513. Outer layer; 514. Dowel; 52. Rib column; 53. Notch; 6. Embedded part one; 7. Embedded part two; 8. Embedded part three; 9. Embedded part four; 10. Connector one; 101. Vertical part; 102. Horizontal part; 11. Steel pad one; 12. Pad; 13. Connector two; 131. Longitudinal part; 132. Transverse part; 14. Embedded part five; 15. Connector three; 16. Steel pad two; 17. Ear embedded part. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0044] Example 1

[0045] like Figure 1 As shown, the double-T slab exterior wall connection structure of the prefabricated building includes the main structure of the prefabricated building. Multiple vertically arranged double-T slabs 5 are provided on the outer side of the main structure. The main structure includes a foundation 1, a ground beam 2, side columns 3 and floor beams 4. The bottom of the side columns 3 and the ground beam 2 are both set in the corresponding installation grooves of the foundation 1. The side columns 3 are provided with corbels 31, and the floor beams 4 are placed on the corbels 31.

[0046] like Figure 2 As shown, the double-T plate 5 includes a face panel 51 and ribs 52, as... Figures 3-4As described above, embedded parts 6 are provided on panel 51 at positions corresponding to ribs 52, and embedded parts 9 are provided on floor beam 4. Embedded parts 9 are connected to embedded parts 6 via connectors 10. Embedded parts 6 are hook bolts or socket bolts. Connector 10 has an L-shaped structure, including a vertical part 101 and a horizontal part 102. The horizontal part 102 is welded to embedded parts 9, and the vertical part 101 has a horizontal elongated hole for the bolt to pass through. The bolt is connected to embedded parts 6. A partition and felt, or a partition and PTFE plate, are provided between the bolt nut and the vertical part 101. That is, the bolt is a double-ended bolt, and partitions and sliding isolation plates are provided between the nuts on both sides of the vertical part 101 on the bolt. The sliding isolation plates are generally made of felt or PTFE plate. When the main structure undergoes horizontal lateral displacement in the X direction, the relative horizontal displacement between it and the double T plate 5 can be released within the long flat circular hole; when the main structure undergoes lateral displacement in the Y direction, since the double T plate 5 is attached to the main structure outside the plane, when one double T plate 5 is placed on each layer, they are hinged at the top and bottom, and their deformation is independent of the main structure, so no additional internal force will be generated.

[0047] The rib column 52 is set outwards, and its bottom is provided with embedded part 2 7. The top of the ground beam 2 is provided with embedded part 3 8 connected to embedded part 2 7. A steel pad 11 is connected between embedded part 2 7 and embedded part 3 8. The steel pad 11 is leveled by adjusting the steel pad 11, and then welded to embedded part 2 7 and embedded part 3 8 to form translational constraint fixation in three directions (X, Y, Z).

[0048] Example 2

[0049] The difference from Example 1 is as follows: Figure 5 and Figure 6 As shown, there are at least two double T-slabs 5 with floors. The floor beam 4 has a protrusion 41 near the bottom of the upper double T-slab 5. Correspondingly, the bottom of the upper double T-slab 5 has a notch 53 that cooperates with the protrusion 41. The top surface of the notch 53 is still provided with a second embedded part 7. The top of the protrusion 41 is provided with a cantilever embedded part 17. A pad 12 is provided between the cantilever embedded part 17 and the second embedded part 7.

[0050] The double-T slab 5 is vertically compressive and load-bearing, with its vertical gravity load directly transferred to the foundation 1. Horizontal wind loads and seismic loads within the slab surface are transferred to the foundation 1 through the slab's own bearing capacity. Horizontal wind loads and seismic loads outside the slab surface are transferred to the main structure. The advantage of this compressive-bearing structure is its simple connection construction and convenient installation. When the building has multiple stories, several double-T slabs 5 can be installed along the height direction, resting on the floor beams 4. Depending on the floor height, one slab can be installed per floor, as in Example 2.

[0051] Example 3

[0052] like Figures 7-9As shown, embedded part 2 7 is a hook bolt or socket bolt, and embedded part 3 8 is connected to embedded part 2 7 via connector 2 13. Connector 2 13 has an L-shaped structure, including a longitudinal part 131 and a transverse part 132. The transverse part 132 is welded to embedded part 3 8, and the longitudinal part 131 has a horizontal elongated hole for the bolt to pass through. The bolt is connected to embedded part 2 7, and a partition plate and a sliding isolation plate are provided between the bolt nut and the longitudinal part 131. The sliding isolation plate is generally made of roofing felt or PTFE plate. When the structure of connector 2 13 is large, stiffening ribs can be provided on the longitudinal part 131 and the transverse part 132.

[0053] When the main structure shifts laterally in the X direction, the relative horizontal lateral displacement between it and the outer wall panel can be released within the horizontal elongated hole on the bottom connector 13 of the double T plate 5; when the main structure shifts laterally in the Y direction, since the double T plate 5 is hinged vertically, its deformation is independent of that of the main structure.

[0054] An embedded part 5 14 is provided on the floor beam 4. The embedded part 5 14 is connected to the embedded part 1 6 via a connector 3 15. The connector 3 15 is a steel bracket. A steel pad 2 16 connects the steel bracket and the embedded part 5 14. The steel bracket rests on the embedded part 5 14 on the top of the floor beam 4 and is leveled by the steel pad 2 16. The steel bracket is welded to the embedded part 1 6 to form a translational constraint fixation in three directions (X, Y, Z).

[0055] In Examples 1 to 3, there is a certain gap between the bottom of the rib column 52 and the top of the foundation 1, and there is also a certain gap between the upper and lower double-T slabs 5. The double-T slabs 5 are suspended from the floor beam 4 by the top steel brackets, and the gap between the bottom and the foundation 1 creates a vertically upward and downward free force mode. When the main structure undergoes horizontal displacement, the double-T slabs 5 can swing in the X direction with the suspension point. The gap ensures that the bottom is not compressed, avoiding the transmission of unnecessary bending moments or shear forces. The gap between the upper and lower double-T slabs 5 allows each slab to bear force independently, avoiding the "stacked cake effect" (i.e., the deformation of the lower slab affects the upper slab) caused by the continuous vertical transmission of loads.

[0056] Example 4

[0057] like Figure 10 As shown, the difference from Embodiment 1 is that the panel 51 of the double T panel 5 includes an inner layer 511, an insulation layer 512 and an outer layer 513, which are connected by pins 514. The sandwich wall panel meets the requirements of house insulation. Windows are opened in the panel 51 area between the ribs 52, and the facade has a sense of rhythm.

[0058] Therefore, the advantages of the above embodiments are: the double-T panels are manufactured in factories, which is fast, ensures quality, and can be transported to the site for installation. Compared with ordinary brick exterior walls, they have obvious economic advantages; and they are more convenient to construct and are more conducive to reducing problems such as bending deformation.

[0059] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A double-T slab exterior wall connection structure for prefabricated buildings, comprising the main structure of the prefabricated building, characterized in that: The outer side of the main structure is provided with multiple vertically arranged double T plates (5). The double T plate (5) includes a panel (51) and a rib (52). The panel (51) is provided with a pre-embedded part one (6) at the position corresponding to the rib (52). The rib (52) is set outward and has a pre-embedded part two (7) at its bottom. The main structure includes a foundation (1), a ground beam (2) and a floor beam (4). The top of the ground beam (2) is provided with a pre-embedded part three (8) connected to the pre-embedded part two (7). The floor beam (4) is provided with a pre-embedded part four (9). The pre-embedded part four (9) is connected to the pre-embedded part one (6) through a connector one (10).

2. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 1, characterized in that: A steel pad (11) is connected between the second (7) and the third (8) embedded parts.

3. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 1, characterized in that: The embedded part 1 (6) is a hook bolt or a sleeve bolt.

4. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 3, characterized in that: The first connector (10) has an L-shaped structure, including a vertical part (101) and a horizontal part (102). The horizontal part (102) is welded to the fourth embedded part (9). The vertical part (101) has a horizontal elongated hole for the bolt to pass through, and the bolt is connected to the first embedded part (6).

5. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 4, characterized in that: A partition and a sliding isolation plate are provided between the nut of the bolt and the vertical part (101).

6. A double-T slab exterior wall connection structure for a prefabricated building, comprising the main structure of the prefabricated building, characterized in that: The outer side of the main structure is provided with multiple vertically arranged double T plates (5). The double T plate (5) includes a panel (51) and a rib (52). The panel (51) is provided with a pre-embedded part one (6) at the position corresponding to the rib (52). The rib (52) is set outward and has a pre-embedded part two (7) at its bottom. The main structure includes a foundation (1), a ground beam (2) and a floor beam (4). The top of the ground beam (2) is provided with a pre-embedded part three (8). The pre-embedded part three (8) is connected to the pre-embedded part two (7) through a connector two (13). The floor beam (4) is provided with a pre-embedded part five (14). The pre-embedded part five (14) is connected to the pre-embedded part one (6) through a connector three (15).

7. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 6, characterized in that: The connecting component three (15) is a steel bracket, and a steel pad two (16) is connected between the steel bracket and the embedded component five (14).

8. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 6, characterized in that: The second connector (13) has an L-shaped structure, including a longitudinal part (131) and a transverse part (132). The transverse part (132) is welded to the third embedded part (8). The longitudinal part (131) has a horizontal elongated hole for the bolt to pass through. The bolt is connected to the second embedded part (7). A partition and a sliding isolation plate are provided between the nut of the bolt and the longitudinal part (131).

9. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 8, characterized in that: The second embedded part (7) is a hook bolt or a sleeve bolt.

10. The double-T slab exterior wall connection structure for prefabricated buildings according to claim 1 or 6, characterized in that: The panel (51) includes an inner page layer (511), an insulation layer (512) and an outer page layer (513), which are connected by pins (514). A window is provided in the panel (51) area between the ribs (52).

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