Connecting joint for fabricated building

Abstract

The utility model provides a fabricated building connecting joint, which relates to the technical field of building engineering and comprises a reinforcement cage b formed by welding longitudinal load-bearing steel bars and stirrups, a transverse connecting bar is welded in the reinforcement cage b in a rightward extending manner, and sleeve steel plates c of L-shaped structures are welded on the front side and the rear side of the transverse connecting bar; a sleeve steel plate e and a sleeve steel plate d which are matched with the two sleeve steel plates c are welded to the top and the bottom of the transverse connecting rib correspondingly, and the sleeve steel plates c, the sleeve steel plate d and the sleeve steel plate e are welded to one another to jointly form an L-shaped sleeve structure. Four sleeve steel plates b are welded to the top and the bottom of the reinforcement cage b in a surrounding mode respectively, and the four sleeve steel plates b are welded to one another to jointly form a square sleeve structure; the design of the connecting joint has certain universality, the connecting modes of different parts are similar, standardized production and construction are facilitated, and the problems that an existing connecting joint is poor in universality, difficult to produce and construct in a standardized mode, lack of flexibility and the like are solved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a connection node for prefabricated buildings. Background Technology

[0002] With the continuous development of the construction industry, prefabricated buildings, with their numerous advantages such as high efficiency, environmental protection, and controllable quality, have gradually become an important direction for modern building development. Prefabricated buildings, by prefabricating building components in factories and then transporting them to the construction site for assembly, can effectively reduce on-site wet work, shorten the construction cycle, and reduce building energy consumption and environmental pollution.

[0003] However, in the practical application of prefabricated buildings, connection nodes, as key components of the building structure, directly affect the stability and safety of the entire structure. Currently, existing prefabricated building connection nodes have some shortcomings. On the one hand, some connection nodes lack versatility, with significant differences in connection methods between different components, making standardized production and construction difficult, increasing production costs and construction complexity. Furthermore, due to a lack of flexibility, these connection nodes are difficult to adjust according to different architectural design requirements and actual engineering conditions, failing to meet diverse building structure and usage needs.

[0004] On the other hand, some connection nodes have limited connection strength, making them prone to loosening or detachment when the building structure is subjected to loads and external forces, thus threatening the overall stability and safety of the building structure. In addition, some existing precast components have problems with the bonding between concrete and steel plates. Insufficient bonding makes it difficult for the two to work together, affecting the overall performance and durability of the precast components and potentially causing structural safety hazards.

[0005] Based on this, this application proposes a connection node for prefabricated buildings that has the advantages of strong versatility, firm connection, high construction efficiency and enhanced bonding between concrete and steel plates, in order to meet the ever-evolving needs of prefabricated buildings and improve the quality and performance of building structures. Utility Model Content

[0006] This utility model relates to a connection node for prefabricated buildings, which solves the problems of poor universality, difficulty in standardized production and construction, lack of flexibility, insufficient connection strength leading to loosening and falling off, and insufficient bonding force between concrete and steel plate that affect the safety, performance and durability of building structures.

[0007] This utility model provides a connection node for prefabricated buildings, specifically including: a steel cage b, which is welded together from longitudinal reinforcing bars and stirrups; a transverse connecting bar is welded to the right side inside the steel cage b; L-shaped sleeve steel plates c are welded to the front and rear sides of the transverse connecting bar; and sleeve steel plates e and d, which are adapted to the two sleeve steel plates c, are welded to the top and bottom of the transverse connecting bar, respectively; and sleeve steel plates c, d, and e are welded together to form an L-shaped sleeve structure.

[0008] The top and bottom of the steel cage b are each surrounded by four sleeve steel plates b, which are welded together to form a square sleeve structure.

[0009] The casing steel plates b, c, d and e are all provided with pre-embedded holes b, and high-strength bolts b are pre-embedded and installed in the pre-embedded holes b, with the bolts of the high-strength bolts b facing outwards.

[0010] Both the inner surfaces of the sleeve steel plate b and the sleeve steel plate c are welded with studs b.

[0011] The reinforcing cage b, transverse connecting bars, sleeve steel plate b, sleeve steel plate c, sleeve steel plate d, and sleeve steel plate e are precast together by concrete to form a precast node.

[0012] Furthermore, it also includes a steel cage a, which is composed of longitudinal reinforcing bars and stirrups welded together. Four sleeve steel plates a are welded around the top and bottom of the steel cage a, and the four sleeve steel plates a are welded together to form a square sleeve structure.

[0013] The sleeve steel plate a is provided with pre-embedded holes a, and high-strength bolts a are pre-embedded in the pre-embedded holes a, with the screws of the high-strength bolts a facing outward.

[0014] The inner surface of the sleeve steel plate a is welded with studs a;

[0015] The steel cage a and the sleeve steel plate a are precast together with concrete to form a precast column.

[0016] Furthermore, it also includes a reinforcing cage c, which is composed of longitudinal reinforcing bars and stirrups welded together. The top of the reinforcing cage c is surrounded by four sleeve steel plates f, which are welded together to form a square sleeve structure.

[0017] The sleeve steel plate f is provided with pre-embedded holes c, and high-strength bolts c are pre-embedded in the pre-embedded holes c, with the bolts of the high-strength bolts c facing outwards.

[0018] The inner surface of the sleeve steel plate f is welded with studs c;

[0019] The steel cage c and the sleeve steel plate f are precast together with concrete to form a precast column foundation.

[0020] Furthermore, the outer surfaces of the sleeve steel plate a and the sleeve steel plate b are jointly equipped with end plates, and the bolts of the high-strength bolts a and b are inserted through the corresponding holes opened on the end plates and locked in place by nuts.

[0021] The outer surfaces of the sleeve steel plate a and the sleeve steel plate f are also jointly equipped with end plates, and the screw of the high-strength bolt c is inserted through the corresponding hole opened on the end plate and locked and fixed by means of a nut.

[0022] This utility model provides a connection node for prefabricated buildings, which has the following advantages:

[0023] The design of this practical connection node has a certain degree of universality. The connection methods between different components are similar, which facilitates standardized production and construction. At the same time, the dimensions and reinforcement of each component can be appropriately adjusted according to different architectural design requirements and actual engineering conditions to adapt to different building structures and usage needs, thus exhibiting strong adaptability.

[0024] This utility model provides strong connection force by setting pre-embedded holes and installing high-strength bolts on the sleeve steel plates of each component, and locking them in conjunction with end plates and nuts. This is useful for connections between precast columns and precast column foundations, and between precast columns and precast nodes. It effectively ensures the tightness and firmness of the connections in prefabricated building structures, making it less likely for the connection nodes to loosen or fall off when the entire building structure is subjected to loads and external forces, thus enhancing the overall stability and safety of the building structure.

[0025] This practical precast joint, precast column, and precast column foundation are all made using a precast method. After the steel cage, sleeve steel plate, and other components are welded together in the factory, they are precast into a whole by pouring concrete. After curing, they are transported to the construction site for assembly. The precast assembly construction method reduces on-site wet work and construction procedures, shortens the construction cycle, improves construction efficiency, and also reduces the management difficulty and safety risks of the construction site.

[0026] This invention incorporates studs welded to the inner surfaces of sleeve steel plates b, c, a, and f. These studs effectively enhance the bond between the concrete and the steel plates, enabling them to work together better, improving the overall performance and durability of the precast components, and avoiding structural problems caused by poor bonding. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0028] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the invention.

[0029] In the attached diagram:

[0030] Figure 1 A schematic diagram of the isometric structure of this application is shown;

[0031] Figure 2 This diagram illustrates the structure of this application in its disassembled state.

[0032] Figure 3 This paper shows a structural schematic diagram of the precast column in its disassembled state according to the present application;

[0033] Figure 4 This paper shows a structural schematic diagram of the prefabricated node in its disassembled state.

[0034] Figure 5 This paper presents a structural schematic diagram of the precast column foundation in its disassembled state.

[0035] List of reference numerals

[0036] 1. Precast column; 101. Reinforcing cage a; 102. Sleeve steel plate a; 103. Embedded hole a; 104. Stud a; 105. High-strength bolt a; 2. Precast joint; 201. Reinforcing cage b; 202. Transverse connecting bar; 203. Sleeve steel plate b; 204. Embedded hole b; 205. Stud b; 206. High-strength bolt b; 207. Sleeve steel plate c; 208. Sleeve steel plate d; 209. Sleeve steel plate e; 3. Precast column foundation; 301. Reinforcing cage c; 302. Sleeve steel plate f; 303. Embedded hole c; 304. Stud c; 305. High-strength bolt c; 4. End plate; 5. Nut. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] Example: Please refer to Figures 1 to 5 :

[0039] This utility model proposes a connection node for prefabricated buildings, comprising: a reinforcing cage b201, welded from longitudinal reinforcing bars and stirrups; a transverse connecting bar 202 extending to the right inside the reinforcing cage b201; L-shaped sleeve steel plates c207 welded to the front and rear sides of the transverse connecting bar 202; and sleeve steel plates e209 and d208, respectively, welded to the top and bottom of the transverse connecting bar 202 to fit the two sleeve steel plates c207; the sleeve steel plates c207, d208, and e209 are welded together to form an L-shaped sleeve structure; and four sleeve steel plates b2 are welded around the top and bottom of the reinforcing cage b201. 03. Four sleeve steel plates b203 are welded together to form a square sleeve structure; pre-embedded holes b204 are opened on sleeve steel plates b203, c207, d208 and e209, and high-strength bolts b206 are pre-embedded in the pre-embedded holes b204, with the bolts of the high-strength bolts b206 facing outward; studs b205 are welded to the inner surface of sleeve steel plates b203 and c207; the reinforcing cage b201, transverse connecting bars 202, sleeve steel plates b203, c207, d208 and e209 are precast together with concrete to form precast node 2;

[0040] It also includes a reinforcing cage a101, which is composed of longitudinal reinforcing bars and stirrups welded together. Four sleeve steel plates a102 are welded around the top and bottom of the reinforcing cage a101. The four sleeve steel plates a102 are welded together to form a square sleeve structure. Each sleeve steel plate a102 has a pre-embedded hole a103, and a high-strength bolt a105 is pre-embedded in the pre-embedded hole a103, with the thread of the high-strength bolt a105 facing outward. A stud a104 is welded to the inner surface of the sleeve steel plate a102. The reinforcing cage a101 and the sleeve steel plates a102 are precast together with concrete to form a precast column 1.

[0041] The reinforcing cage c301 is composed of longitudinal reinforcing bars and stirrups welded together. Four sleeve steel plates f302 are welded around the top of the reinforcing cage c301. The four sleeve steel plates f302 are welded together to form a square sleeve structure. Each sleeve steel plate f302 has a pre-embedded hole c303, and a high-strength bolt c305 is pre-embedded in the pre-embedded hole c303, with the thread of the high-strength bolt c305 facing outward. A stud c304 is welded to the inner surface of the sleeve steel plate f302. The reinforcing cage c301 and the sleeve steel plates f302 are precast together with concrete to form a precast column foundation 3.

[0042] End plates 4 are installed on the outer surfaces of sleeve steel plates a102 and b203, and the bolts of high-strength bolts a105 and b206 pass through the corresponding holes on the end plates 4 and are locked in place by nuts 5; end plates 4 are also installed on the outer surfaces of sleeve steel plates a102 and f302, and the bolts of high-strength bolts c305 pass through the corresponding holes on the end plates 4 and are locked in place by nuts 5.

[0043] The working principle of this embodiment:

[0044] Prefabricated Node 2 Creation:

[0045] The longitudinal reinforcing bars and stirrups are welded according to the design requirements to form the basic structure of the reinforcing cage b201. The transverse connecting bar 202 is welded to the right inside the reinforcing cage b201 to ensure that the welding is firm and meets the structural stress requirements. The sleeve steel plate c207 with an L-shaped structure is welded on the front and rear sides of the transverse connecting bar 202. The sleeve steel plate e209 and sleeve steel plate d208, which are compatible with the two sleeve steel plates c207, are welded to the top and bottom of the transverse connecting bar 202, respectively. Then the sleeve steel plate c207, sleeve steel plate d208 and sleeve steel plate e209 are welded to each other to form an L-shaped sleeve structure.

[0046] Four sleeve steel plates b203 are welded around the top and bottom of the steel cage b201, and the four sleeve steel plates b203 are welded together to form a square sleeve structure.

[0047] High-strength bolts b206 are pre-embedded in the pre-embedded holes b204 opened on the casing steel plates b203, c207, d208 and e209, and the bolts of the high-strength bolts b206 are ensured to face outwards.

[0048] The steel cage b201, transverse connecting bar 202, sleeve steel plate b203, sleeve steel plate c207, sleeve steel plate d208 and sleeve steel plate e209 are placed into the mold as a whole, and concrete is poured. The inner surfaces of sleeve steel plate b203 and sleeve steel plate c207 are welded with studs b205. The studs b205 enhance the bond between the concrete and the steel plate. They are precast into a whole by concrete and after curing, they together form the precast node 2.

[0049] Precast column 1 fabrication:

[0050] It is also composed of longitudinal reinforcing bars and stirrups welded together to ensure that its size and reinforcement meet the design standards. Four sleeve steel plates a102 are welded around the top and bottom of the reinforcing cage a101. The four sleeve steel plates a102 are welded together to form a square sleeve structure.

[0051] High-strength bolts a105 are pre-embedded in the pre-embedded holes a103 opened on the sleeve steel plate a102, and the bolts of the high-strength bolts a105 are ensured to face outwards.

[0052] The steel cage a101 and the sleeve steel plate a102 are placed in the mold. Because the inner surface of the sleeve steel plate a102 is welded with studs a104, concrete is poured. The studs a104 enhance the bond between the concrete and the steel plate. The concrete is precast into a whole and cured to form a precast column 1.

[0053] Precast column foundation 3 fabrication:

[0054] Also composed of longitudinal reinforcing bars and stirrups welded together, four sleeve steel plates f302 are welded around the top of the reinforcing cage c301, and the four sleeve steel plates f302 are welded together to form a square sleeve structure.

[0055] High-strength bolts c305 are pre-embedded in the pre-embedded holes c303 opened on the sleeve steel plate f302, and the thread of the high-strength bolts c305 is facing outward. The steel cage c301 and the sleeve steel plate f302 are placed in the mold and concrete is poured. Because the inner surface of the sleeve steel plate f302 is welded with studs c304, the bonding force between the concrete and the steel plate is enhanced. The concrete is prefabricated into a whole and cured to form a prefabricated column foundation 3.

[0056] Component connection and installation:

[0057] Connecting precast column 1 and precast column foundation 3: Align the outer surfaces of the sleeve steel plate a102 of precast column 1 and the sleeve steel plate f302 of precast column foundation 3, install end plate 4, insert the screw of high-strength bolt c305 through the corresponding hole on end plate 4, and lock it with nut 5 to complete the connection between precast column 1 and precast column foundation 3;

[0058] Connecting precast column 1 and precast node 2: Align the outer surfaces of the sleeve steel plate a102 of precast column 1 and the sleeve steel plate b203 of precast node 2, install end plate 4, and insert the bolts of high-strength bolts a105 and b206 through the corresponding holes opened on end plate 4. Then use nuts 5 to lock and fix them to ensure that the connection is tight and firm, thus completing the connection between precast column 1 and precast node 2.

[0059] The following points should be noted in this article:

[0060] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0061] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0062] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A connection joint for fabricated construction, characterized by Include: The steel cage b (201) is welded by longitudinal force steel bar and stirrup, the steel cage b (201) inside extends to the right and is welded with transverse contact muscle (202), the transverse contact muscle (202) is welded with the sleeve steel plate c (207) of L-shaped structure on the two sides, and the top and bottom of the transverse contact muscle (202) are welded with the sleeve steel plate e (209) and sleeve steel plate d (208) respectively matched with two sleeve steel plates c (207), the sleeve steel plate c (207), sleeve steel plate d (208) and sleeve steel plate e (209) are welded with each other, and jointly constitute L-shaped sleeve structure; The top and bottom of the steel cage b (201) are each surrounded by four sleeve steel plates b (203) welded, and the four sleeve steel plates b (203) are welded together to form a square sleeve structure; The sleeve steel plate b (203), sleeve steel plate c (207), sleeve steel plate d (208) and sleeve steel plate e (209) are all provided with embedded hole b (204), and high-strength bolt b (206) is embedded and installed in the embedded hole b (204), and the screw rod of the high-strength bolt b (206) faces outward; The inner surfaces of the sleeve steel plate b (203) and the sleeve steel plate c (207) are welded with pegs b (205); The steel cage b (201), the transverse contact muscle (202), the sleeve steel plate b (203), the sleeve steel plate c (207), the sleeve steel plate d (208) and the sleeve steel plate e (209) are integrated by concrete, and jointly constitute a prefabricated node (2).

2. The connection node for fabricated construction according to claim 1, characterized in that Also includes steel cage a (101), the steel cage a (101) is welded by longitudinal force steel bar and stirrup, the top and bottom of the steel cage a (101) are each surrounded by four sleeve steel plates a (102) welded, and the four sleeve steel plates a (102) are welded together to form a square sleeve structure; The sleeve steel plate a (102) is provided with embedded hole a (103), and high-strength bolt a (105) is embedded and installed in the embedded hole a (103), and the screw rod of the high-strength bolt a (105) faces outward; The inner surface of the sleeve steel plate a (102) is welded with peg a (104); The steel cage a (101) and the sleeve steel plate a (102) are integrated by concrete, and jointly constitute a prefabricated column (1).

3. The connection node for fabricated construction according to claim 2, characterized in that Also includes steel cage c (301), the steel cage c (301) is welded by longitudinal force steel bar and stirrup, the top of the steel cage c (301) is surrounded by four sleeve steel plates f (302) welded, and the four sleeve steel plates f (302) are welded together to form a square sleeve structure; The sleeve steel plate f (302) is provided with embedded hole c (303), and high-strength bolt c (305) is embedded and installed in the embedded hole c (303), and the screw rod of the high-strength bolt c (305) faces outward; The inner surface of the sleeve steel plate f (302) is welded with peg c (304); The steel cage c (301) and the sleeve steel plate f (302) are integrated by concrete, and jointly constitute a prefabricated column foundation (3).

4. The connection node for fabricated construction according to claim 3, characterized in that The outer surface of the sleeve steel plate a (102) and the sleeve steel plate b (203) are jointly installed with an end plate (4), the screw rods of the high-strength bolt a (105) and the high-strength bolt b (206) are inserted through the corresponding hole positions of the end plate (4), and are locked and fixed through the nuts (5); The outer surface of the sleeve steel plate a (102) and the sleeve steel plate f (302) are also jointly installed with an end plate (4), and the screw rod of the high-strength bolt c (305) is also inserted through the corresponding hole positions of the end plate (4), and is locked and fixed through the nuts (5).

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