Prefabricated externally-hung wallboard and steel structure connecting structure

Abstract

The utility model discloses a connecting structure of a prefabricated external wall panel and a steel structure, which belongs to the technical field of building industrialization assembly type construction engineering and comprises a cast-in-place concrete floor, a steel beam, an embedded window, a prefabricated external wall panel lower end and a prefabricated external wall panel upper end. According to the connecting structure of the prefabricated externally-hung wall panel and the steel structure, stress of the prefabricated externally-hung wall panel is transmitted to the steel beam through the third embedded part and the fourth embedded part, integrated design is carried out in a bolt connecting and welding mode, and therefore the safety and cracking resistance of the connecting position are improved; and a sealant, a waterproof tongue-and-groove and the like are arranged between the upper end of the prefabricated external wall panel and the lower end of the prefabricated external wall panel, so that rainwater on the outer side can be effectively prevented from seeping into a room, and the requirements of safety, cracking, seepage prevention and the like of a steel structure joint are met.

Description

Technical Field

[0001] The utility model relates to the technical field of building industrialized prefabricated building projects, and particularly relates to a connecting structure between a precast external wall panel and a steel structure. Background Technique

[0002] At present, most buildings in domestic multi-storey and high-rise public buildings still mainly adopt concrete structure systems. For the concrete structure systems implementing prefabricated buildings, they are gradually tending towards fully concrete exterior enclosing structures. Although it can well meet the requirements of building use performance, it changes the structural force system and increases the overall construction cost. For multi-storey and high-rise public buildings, steel structures can be adopted locally or entirely. For example, a steel structure force system should be adopted for large cantilever parts, and it is convenient for construction and shape restoration to use a steel structure for buildings with complex exterior facade shapes. Therefore, the advantages of using a steel structure in prefabricated buildings are obvious.

[0003] With the rapid development of the domestic prefabricated building industry, the modular exterior enclosing system is the general trend of development. The technical combination of a concrete structure system and precast external wall panels is relatively mature, but the technical combination of a steel structure system and precast external wall panels is rarely encountered. Most adopt a steel structure system + glass curtain wall. However, for parts where a steel structure must be adopted for local cantilevers, to meet the consistent overall facade effect of the building, precast components of the same material must be used.

[0004] The connecting structure between the precast external wall panel and the steel structure is an important part of the prefabricated building, and their design and construction are crucial for the stability and safety of the entire building. Currently, the key technical difficulties lie in the safety, anti-cracking, and anti-seepage of the connecting structure of the enclosing system. To solve this technical problem, the utility model proposes a connecting structure between a precast external wall panel and a steel structure. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a connecting structure between a precast external wall panel and a steel structure, which can effectively solve the problems mentioned in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A prefabricated external wall panel and steel structure connection structure, comprising a cast-in-place concrete floor, a steel beam, an embedded window, a lower end of a prefabricated external wall panel, and an upper end of a prefabricated external wall panel, wherein the upper end of the prefabricated external wall panel is hung on the outside of the steel beam via a third embedded part and a fourth embedded part, the lower end of the prefabricated external wall panel is connected to the cast-in-place concrete floor via a first embedded part and a second embedded part, the embedded window is installed between the upper end of the prefabricated external wall panel and the lower end of the prefabricated external wall panel, a cavity is provided at one end of the upper end of the prefabricated external wall panel and the lower end of the prefabricated external wall panel, the interior of the cavity is filled with a first PE rod, and a second PE rod and a weather-resistant sealant are provided at the end of the cavity.

[0008] Preferably, the upper part of the lower end of the prefabricated external wall panel and the lower part of the upper end of the prefabricated external wall panel are connected to the embedded window as a whole, and the lower end of the prefabricated external wall panel and the upper end of the prefabricated external wall panel are filled with weight-reducing blocks.

[0009] Preferably, the lower end of the prefabricated external wall panel and the upper end of the prefabricated external wall panel are separated by a cavity seam, a waterproof groove is provided at one end of the cavity, and the weather-resistant sealant and the second PE rod are arranged inside the waterproof groove in order from outside to inside.

[0010] Preferably, the outer surfaces of the first embedded part and the fourth embedded part are provided with anti-cracking mortar, the first embedded part embedded in the lower end of the prefabricated external wall panel locks the component steel bars and the angle steel into a whole through the first bolt, and the other end of the first embedded part is fixedly connected to the second embedded part through the first welding point.

[0011] Preferably, the lower end of the second embedded part is fixedly connected to the cast-in-place concrete floor slab, the second embedded part and the rivets on the steel beam and the third embedded part are staggered and do not collide with each other, the third embedded part embedded in the upper end of the prefabricated external wall panel is fixedly connected to the upper surface of the steel beam by a second bolt, and the end of the third embedded part is further fixed to the steel beam by a second welding point.

[0012] Preferably, the lower surface of the steel beam is fixedly connected to a fourth embedded part embedded in the upper end of the prefabricated external wall panel through a second welding point, and the fourth embedded part locks the component reinforcement and the angle steel into a whole through a first bolt.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the present utility model, by providing components such as the third embedded part and sealant, the force of the precast external wall panel is transmitted to the steel beam through the third embedded part and the fourth embedded part, and an integrated design is carried out by means of bolt connection and welding to increase the safety and crack prevention at the connection node. Then, by providing a sealant and a waterproof rabbet between the upper end and the lower end of the precast external wall panel, etc., rainwater on the outside can be effectively blocked from seeping into the room, thereby meeting the requirements for the safety, crack prevention, and anti-seepage of the steel structure connection node, and solving the problems of poor safety, crack prevention, and anti-seepage of the connection structure of the existing enclosure system.

[0015] In the present utility model, by providing a weight-reducing block, etc., the weight of the precast component is reduced to facilitate construction hoisting. Through an integrated design, the glass curtain wall enclosure system of the steel structure has been replaced with a precast external wall panel modular enclosure system, making the building facade show diversity. The combination of the steel structure frame and the facade of the precast external wall panel will be more suitable for multi-story and high-rise schools, hospitals, offices, and other public buildings that partially or entirely adopt a steel structure system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall structural schematic diagram of a connection structure between a precast external wall panel and a steel structure according to the present utility model;

[0017] Figure 2 is an overall cross-sectional view of a connection structure between a precast external wall panel and a steel structure according to the present utility model;

[0018] Figure 3 is a schematic diagram of the first embedded part in a connection structure between a precast external wall panel and a steel structure according to the present utility model;

[0019] Figure 4 is a schematic diagram of the second embedded part in a connection structure between a precast external wall panel and a steel structure according to the present utility model;

[0020] Figure 5 is a schematic diagram of the third embedded part in a connection structure between a precast external wall panel and a steel structure according to the present utility model;

[0021] Figure 6 is a schematic diagram of the fourth embedded part in a connection structure between a precast external wall panel and a steel structure according to the present utility model.

[0022] In the figure: 1, cast-in-place concrete floor slab; 2, steel beam; 3, embedded window; 4, lower end of precast external wall panel; 5, upper end of precast external wall panel; 6, weight-reducing block; 7, first PE rod; 8, cavity; 9, second PE rod; 10, weather-resistant sealant; 11, crack-resistant mortar; 12, first bolt; 13, first embedded part; 14, first welding point; 15, second embedded part; 16, rivet; 17, second welding point; 18, second bolt; 19, third embedded part; 20, fourth embedded part. Detailed implementation manners

[0023] To make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0024] As Figures 1-5 shown, a connection structure between a precast external wall panel and a steel structure includes a cast-in-place concrete floor slab 1, a steel beam 2, a pre-embedded window 3, the lower end 4 of the precast external wall panel, and the upper end 5 of the precast external wall panel. The upper end 5 of the precast external wall panel is externally hung on the outer side of the steel beam 2 through a third embedded part 19 and a fourth embedded part 20. Three rows of the third embedded parts 19 and the fourth embedded parts 20 are respectively arranged on each upper end 5 of the precast external wall panel, and the structure at this position will bear the structural force brought by the self-weight of the precast external wall panel.

[0025] The lower end 4 of the precast external wall panel is connected to the cast-in-place concrete floor slab 1 through a first embedded part 13 and a second embedded part 15. Three rows of the first embedded parts 13 and the second embedded parts 15 are arranged at each lower end 4 of the precast external wall panel. The connection at this position limits the precast external wall panel. Anti-cracking mortar 11 is provided on the outer surfaces of the first embedded part 13 and the fourth embedded part 20, and finishing is carried out through the anti-cracking mortar 11.

[0026] The first embedded part 13 embedded at the lower end 4 of the precast external wall panel locks the component steel bars and the angle steel into a whole through a first bolt 12. The other end of the first embedded part 13 is fixedly connected to the second embedded part 15 through a first welding point 14. The lower end of the second embedded part 15 is fixedly connected to the cast-in-place concrete floor slab 1. The second embedded part 15 is pre-embedded into the cast-in-place concrete floor slab 1 before concrete pouring, and the rivet 16 on the steel beam 2 and the third embedded part 19 of the second embedded part 15 are staggered from each other without collision.

[0027] The third embedded part 19 embedded at the upper end 5 of the precast external wall panel is fixedly connected to the upper surface of the steel beam 2 through a second bolt 18. The end of the third embedded part 19 is further fixed to the steel beam 2 through a second welding point 17. The lower surface of the steel beam 2 is fixedly connected to the fourth embedded part 20 embedded at the upper end 5 of the precast external wall panel through a second welding point 17. The fourth embedded part 20 locks the component steel bars and the angle steel into a whole through a first bolt 12. The pre-embedded window 3 is installed between the upper end 5 and the lower end 4 of the precast external wall panel, and the overall shape of the precast external wall panel integrates architectural decorative lines.

[0028] The upper part of the lower end 4 of the precast external wall panel, the lower part of the upper end 5 of the precast external wall panel and the pre-embedded window 3 are connected into a whole. The inside of the lower end 4 and the upper end 5 of the precast external wall panel is filled with weight-reducing blocks 6. Due to the grand appearance of the outer facade, weight-reducing blocks 6 are filled to reduce the weight of the precast components, which is convenient for construction hoisting.

[0029] At one end where the upper end 5 and the lower end 4 of the precast external wall panel are close to each other, there is a cavity 8. The inside of the cavity 8 is filled with a first PE rod 7, and the first PE rod 7 is used to prevent the outflow of the inner mortar. At the end of the cavity 8, there are a second PE rod 9 and a weather-resistant sealant 10. The entire facade is modularized according to this structure to form an external protection system integrating thermal insulation, heat insulation, and decoration.

[0030] The lower end 4 and the upper end 5 of the precast external wall panel are separated by the joint of the cavity 8. One end of the cavity 8 is provided with a waterproof rabbet. The weather-resistant sealant 10 and the second PE rod 9 are arranged inside the waterproof rabbet in the order from outside to inside. Through structural waterproofing and material waterproofing, it can completely and effectively prevent the outside rainwater from seeping into the room, for aesthetic treatment.

[0031] It should be noted that during the actual use of the device, the force of the precast external wall panel is transmitted to the steel beam 2 through the third embedded part 19 and the fourth embedded part 20. This integrally designed precast external wall panel can meet the requirements of the connection structure safety, cracking, anti-seepage, sound insulation, etc. of the steel structure anti-corrosion and the enclosure system through bolt connection and welding methods. The first embedded part 13 is pre-embedded at the lower end 4 of the precast external wall panel, the third embedded part 19 and the fourth embedded part 20 are pre-embedded at the upper end 5 of the precast external wall panel, and the second embedded part 15 is pre-embedded in the cast-in-place concrete floor slab 1. During construction, after the installation of the steel beam 2 on the upper layer and the formwork support of the floor are completed, the precast external wall panel of the current layer is installed. First, bolt the third embedded part 19 firmly to the steel beam 2, and then weld it to the steel beam 2. Secondly, weld the fourth embedded part 20, then weld the first embedded part 13 and the second embedded part 15. Then, embed the second embedded part 15 into the cast-in-place concrete floor slab 1 according to the fixed position, and finally pour the concrete to complete the construction of one layer. Repeat the above operations.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated external wall panel and steel structure connection structure, comprising a cast-in-place concrete floor slab (1), a steel beam (2), a pre-buried window (3), a prefabricated external wall panel lower end (4), and a prefabricated external wall panel upper end (5), characterized in that: The upper end (5) of the prefabricated external wall panel is hung on the outside of the steel beam (2) through a third embedded part (19) and a fourth embedded part (20); the lower end (4) of the prefabricated external wall panel is connected to the cast-in-place concrete floor (1) through a first embedded part (13) and a second embedded part (15); the embedded window (3) is installed between the upper end (5) of the prefabricated external wall panel and the lower end (4) of the prefabricated external wall panel; a cavity (8) is provided at one end where the upper end (5) of the prefabricated external wall panel and the lower end (4) of the prefabricated external wall panel are close; the interior of the cavity (8) is filled with a first PE rod (7); and a second PE rod (9) and a weather-resistant sealant (10) are provided at the end of the cavity (8).

2. The prefabricated external wall panel and steel structure connection structure according to claim 1, characterized in that: The upper part of the lower end (4) of the prefabricated external wall panel and the lower part of the upper end (5) of the prefabricated external wall panel are connected to the embedded window (3) as a whole, and the interior of the lower end (4) of the prefabricated external wall panel and the upper end (5) of the prefabricated external wall panel are filled with weight-reducing blocks (6).

3. The prefabricated external wall panel and steel structure connection structure according to claim 2, characterized in that: The lower end (4) of the prefabricated external wall panel and the upper end (5) of the prefabricated external wall panel are separated by a cavity (8), one end of the cavity (8) is provided with a waterproof groove, and the weather-resistant sealant (10) and the second PE rod (9) are arranged inside the waterproof groove in order from the outside to the inside.

4. The prefabricated external wall panel and steel structure connection structure according to claim 3 is characterized by: The outer surfaces of the first embedded part (13) and the fourth embedded part (20) are provided with anti-cracking mortar (11); the first embedded part (13) pre-embedded at the lower end (4) of the prefabricated external wall panel locks the component steel bars and the angle steel into a whole through a first bolt (12); the other end of the first embedded part (13) is fixedly connected to the second embedded part (15) through a first welding point (14).

5. The prefabricated external wall panel and steel structure connection structure according to claim 4, characterized in that: The lower end of the second embedded part (15) is fixedly connected to the cast-in-place concrete floor slab (1); the second embedded part (15) and the rivet (16) on the steel beam (2) and the third embedded part (19) are staggered and do not collide with each other; the third embedded part (19) embedded in the upper end (5) of the prefabricated external wall panel is fixedly connected to the upper surface of the steel beam (2) by a second bolt (18); and the end of the third embedded part (19) is further fixed to the steel beam (2) by a second welding point (17).

6. The prefabricated exterior wall panel and steel structure connection structure according to claim 5, characterized in that: The lower surface of the steel beam (2) is fixedly connected to a fourth embedded part (20) embedded in the upper end (5) of the prefabricated external wall panel via a second welding point (17); the fourth embedded part (20) locks the component reinforcement and the angle steel into a whole via a first bolt (12).

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