Embedded connector and connecting structure of steel structure and reinforced concrete structure

Abstract

The utility model discloses an embedded connector and a connecting structure of a steel structure and a reinforced concrete structure, and aims to provide the embedded connector which has the advantages that a bolt can be recycled and reused, and the embedded connector does not need to be cut off after the steel structure is disassembled. The pre-embedded connector comprises a pre-embedded steel bar which is pre-embedded in the reinforced concrete structure; the reinforcing steel bar connector is connected with the embedded reinforcing steel bar, the reinforcing steel bar connector is embedded in the reinforced concrete structure, and a first threaded hole is formed in the reinforcing steel bar connector; the connecting bolt is connected with the steel structure, is located on the outer side of the reinforced concrete structure and is detachably matched with the first threaded hole.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a pre-buried connector and a connection structure between a steel structure and a reinforced concrete structure. Background Art

[0002] In traditional civil engineering construction, the connection method between reinforced concrete structure and steel structure is generally to embed high-strength bolts in the reinforced concrete structure, and the high-strength bolts are first welded to the steel bars in the reinforced concrete structure; then the steel structure is fixed to the reinforced concrete structure with high-strength bolts. For example, in the supporting structure in the foundation pit, a combination of reinforced concrete purlins and steel purlins is often used. At present, the connection method between reinforced concrete purlins and steel purlins is as follows: first, the steel bars in the reinforced concrete purlins are welded to the high-strength bolts, and then the steel bars and high-strength bolts are embedded in the concrete structure; then the steel purlins are fixed to the reinforced concrete purlin structure with high-strength bolts.

[0003] Although the current connection method between reinforced concrete structure and steel structure is convenient for the installation of steel structure and can realize the disassembly and reuse of steel structure, it has the following shortcomings:

[0004] First, since part of the pre-buried high-strength bolts protrude outside the reinforced concrete structure to connect the steel structure, after the steel structure is dismantled, the protruding high-strength bolts often need to be cut off, which increases the construction process. In addition, the high-strength bolts are high in strength and the cutting operation is inconvenient.

[0005] Secondly, high-strength bolts cannot be recycled and reused after being embedded, and high-strength bolts are expensive and have high strength, which causes waste. In addition, high-strength bolts may lose strength after being welded to the steel bars in the reinforced concrete structure, and affect the safety and reliability of the connection. Utility Model Content

[0006] The purpose of the utility model is to provide a pre-buried connector and a connection structure between a steel structure and a reinforced concrete structure, wherein the bolts used to connect the reinforced concrete structure and the steel structure can be recycled and reused, and after the steel structure is disassembled, there is no need to cut off the pre-buried connector, which can effectively solve the problem in the prior art that after the steel structure is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and makes the cutting operation inconvenient.

[0007] The technical solution of the utility model is:

[0008] A pre-buried connector, comprising:

[0009] Embedded steel bars, which are embedded in reinforced concrete structures;

[0010] A steel bar connector is connected to the embedded steel bar, the steel bar connector is embedded in the reinforced concrete structure, and a first threaded hole is provided on the steel bar connector;

[0011] The connecting bolts for connecting the steel structure are located outside the reinforced concrete structure and are detachably matched with the first threaded holes.

[0012] The embedded connector of this solution embeds the steel bar connector in the reinforced concrete structure, and the steel structure is connected to the reinforced concrete structure by connecting bolts and the first threaded holes. In this way, not only can the installation of the steel structure be facilitated and the reuse of the steel structure be realized, but the bolts can also be recycled and reused. On the other hand, since the steel bar connector is embedded in the reinforced concrete structure, it is equivalent to forming a first threaded hole for connecting the steel structure in the reinforced concrete structure. In this way, the steel bar connector and the first threaded hole can be completely embedded in the reinforced concrete structure without extending to the outside of the reinforced concrete structure. Therefore, after the steel structure is disassembled, there is no need to cut off the embedded connector, which can effectively solve the problem in the prior art that after the steel structure is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and is inconvenient to cut off.

[0013] In addition, the embedded steel bars of the present invention are connected to the steel bar connector, and the connecting bolts are connected to the first threaded holes of the steel bar connector through threads, so the connecting bolts do not need to be welded. This can also avoid the problem in the prior art that there may be strength loss after the high-strength bolts are welded to the steel bars in the reinforced concrete structure, which affects the safety and reliability of the connection.

[0014] Preferably, the steel bar connector is provided with a second threaded hole, one end of the embedded steel bar is provided with an external thread, and the external thread of one end of the embedded steel bar is threadedly connected to the second threaded hole. In this way, the embedded steel bar and the steel bar connector can be easily connected, and the connection is stable and reliable.

[0015] Preferably, the steel bar connector is composed of a connecting sleeve, the first threaded hole is arranged in one end of the connecting sleeve, and the second threaded hole is arranged in the other end of the connecting sleeve. In this way, the actual processing and manufacturing of the steel bar connector is facilitated.

[0016] Preferably, the first threaded hole and the second threaded hole are formed by two ends of the same threaded hole, and the first threaded hole and the second threaded hole have the same inner diameter, so as to facilitate the actual processing and manufacturing of the steel bar connector and the first threaded hole and the second threaded hole.

[0017] Preferably, the inner diameters of the first threaded hole and the second threaded hole are different. Thus, in the actual construction process, the embedded steel bar is ensured to be connected to the second threaded hole, and the embedded steel bar is prevented from being mistakenly installed in the first threaded hole.

[0018] Preferably, the embedded steel bar is connected to the steel bar connector by welding, so as to improve the stability and reliability of the connection between the embedded steel bar and the steel bar connector.

[0019] Preferably, the threaded opening of the first threaded hole is connected to the outer surface of the reinforced concrete structure, the threaded opening of the first threaded hole is flush with the outer surface of the reinforced concrete structure, or the threaded opening of the first threaded hole is located on the inner side of the outer surface of the reinforced concrete structure. The steel bar connector and the first threaded hole are completely embedded in the reinforced concrete structure and do not need to extend outside the reinforced concrete structure. Therefore, after the steel structure is disassembled, there is no need to cut off the embedded connector, which can effectively solve the problem in the prior art that after the steel structure is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and is inconvenient to cut off.

[0020] Preferably, the connecting bolts are high-strength bolts, which have high strength and can ensure that the steel structure is stably and reliably connected to the reinforced concrete structure.

[0021] Preferably, a detachable plug is provided in the threaded opening of the first threaded hole. Since the steel bar connector is pre-buried in the reinforced concrete structure, during the process of pouring concrete in the reinforced concrete structure, concrete may enter the first threaded hole, thereby affecting the subsequent installation of the connecting bolt. In order to solve this problem, the present solution uses a plug to seal the threaded opening of the first threaded hole, thereby preventing concrete from entering the first threaded hole during the process of pouring concrete.

[0022] A connection structure between a steel structure and a reinforced concrete structure comprises a pre-buried connector. The steel structure is provided with a bolt through hole. The connecting bolt passes through the bolt through hole and is threadedly connected with a first threaded hole to fix the steel structure on the reinforced concrete structure.

[0023] The beneficial effects of the utility model are:

[0024] Firstly, it not only facilitates the installation of steel structures and realizes the reuse of steel structures, but also the bolts can be recycled and reused.

[0025] Secondly, since the steel bar connector is pre-buried in the reinforced concrete structure, it is equivalent to forming a first threaded hole for connecting the steel structure in the reinforced concrete structure. In this way, the steel bar connector and the first threaded hole can be completely buried in the reinforced concrete structure without extending to the outside of the reinforced concrete structure. Therefore, after the steel structure is disassembled, there is no need to cut off the embedded connector, which can effectively solve the problem in the prior art that after the steel structure is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and makes the cutting operation inconvenient.

[0026] Thirdly, the embedded steel bars are connected to the steel bar connector, and the connecting bolts are connected to the first threaded holes of the steel bar connector through threads, so the connecting bolts do not need to be welded. This can also avoid the problem in the prior art that the strength loss may occur after the high-strength bolts are welded to the steel bars in the reinforced concrete structure, which affects the safety and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the embedded connector of the utility model before assembly.

[0028] Figure 2 It is a partial structural schematic diagram of the embedded connector of the utility model in actual application.

[0029] Figure 3 The utility model is a structural schematic diagram of a steel bar connector and a plug in the embedded connector.

[0030] In the figure:

[0031] Embedded steel bar 1;

[0032] Steel bar connector 2, first threaded hole 2.1, second threaded hole 2.2;

[0033] Connecting bolt 3;

[0034] Reinforced concrete structure 4;

[0035] Steel structure 5;

[0036] Plug 6. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:

[0038] Specific embodiment 1, as Figure 1 , Figure 2 As shown, a pre-embedded connector for connecting a reinforced concrete structure with a steel structure comprises a pre-embedded steel bar 1, a steel bar connector 2 and a connecting bolt 3. The pre-embedded steel bar 1 is pre-embedded in a reinforced concrete structure 4. The pre-embedded steel bar 1 is in a straight line, L-shaped, T-shaped or other shape.

[0039] The steel bar connector 2 is pre-buried in the reinforced concrete structure 4. The steel bar connector 2 is connected to the pre-buried steel bar as a whole. The steel bar connector is provided with a first threaded hole 2.1. The threaded opening of the first threaded hole 2.1 is connected to the outer surface of the reinforced concrete structure.

[0040] The connecting bolt 3 is used to connect the steel structure 5. The connecting bolt 3 is located outside the reinforced concrete structure 4, and the connecting bolt 3 is detachably matched with the first threaded hole 2.1.

[0041] The embedded connector of this embodiment embeds the steel bar connector 2 in the reinforced concrete structure 4, and the steel structure 5 is connected to the reinforced concrete structure 4 by matching the connecting bolts 3 with the first threaded holes 2.1. In this way, not only can the installation of the steel structure 5 be facilitated, but also the disassembly and reuse of the steel structure 5 can be realized; the connecting bolts 3 can also be disassembled, recycled and reused to avoid waste of connecting bolts and save costs.

[0042] Since the steel bar connector 2 is pre-buried in the reinforced concrete structure 4, it is equivalent to forming a first threaded hole 2.1 for connecting the steel structure 5 in the reinforced concrete structure 4. In this way, the steel bar connector 2 and the first threaded hole 2.1 can be completely buried in the reinforced concrete structure 4 without extending to the outside of the reinforced concrete structure 4. Therefore, after the steel structure 5 is disassembled, there is no need to cut off the pre-buried connector, which can effectively solve the problem in the prior art that after the steel structure 5 is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and makes the cutting operation inconvenient.

[0043] In addition, the embedded steel bar 1 of the present embodiment is connected to the steel bar connector 2, and the connecting bolt 3 is connected to the first threaded hole 2.1 of the steel bar connector 2 through a thread, so the connecting bolt 3 does not need to be welded, thereby avoiding the problem in the prior art that the high-strength bolts may lose strength after being welded to the steel bars in the reinforced concrete structure 4, and affecting the safety and reliability of the connection.

[0044] Specific embodiment 2, as Figure 1 , Figure 2 As shown, a pre-embedded connector for connecting a reinforced concrete structure with a steel structure comprises a pre-embedded steel bar 1, a steel bar connector 2 and a connecting bolt 3. The pre-embedded steel bar 1 is pre-embedded in a reinforced concrete structure 4. The pre-embedded steel bar 1 is in a straight line, L-shaped, T-shaped or other shape.

[0045] The steel bar connector 2 is embedded in the reinforced concrete structure 4. The steel bar connector 2 is connected to the embedded steel bar as a whole, for example, the steel bar connector 2 is connected to the embedded steel bar as a whole by threading and / or welding. A first threaded hole 2.1 is provided on the steel bar connector. The threaded opening of the first threaded hole 2.1 is connected to the outer surface of the reinforced concrete structure. The threaded opening of the first threaded hole 2.1 is flush with the outer surface of the reinforced concrete structure, or the threaded opening of the first threaded hole 2.1 is located on the inner side of the outer surface of the reinforced concrete structure. In this embodiment, the threaded opening of the first threaded hole 2.1 is flush with the outer surface of the reinforced concrete structure.

[0046] The connecting bolt 3 is used to connect the steel structure 5. The connecting bolt 3 is located outside the reinforced concrete structure 4, and the connecting bolt 3 is detachably matched with the first threaded hole 2.1. In this embodiment, the connecting bolt 3 is a high-strength bolt. Of course, it should be noted that the connecting bolt 3 can also be a bolt of other materials.

[0047] The embedded connector of this embodiment embeds the steel bar connector 2 in the reinforced concrete structure 4, and the steel structure 5 is connected to the reinforced concrete structure 4 by matching the connecting bolts 3 with the first threaded holes 2.1. In this way, not only can the installation of the steel structure 5 be facilitated, but also the disassembly and reuse of the steel structure 5 can be realized; the connecting bolts 3 can also be disassembled, recycled and reused to avoid waste of connecting bolts and save costs.

[0048] like Figure 2 As shown, since the steel bar connector 2 is pre-buried in the reinforced concrete structure 4, it is equivalent to forming a first threaded hole 2.1 for connecting the steel structure 5 in the reinforced concrete structure 4. In this way, the steel bar connector 2 and the first threaded hole 2.1 can be completely buried in the reinforced concrete structure 4 without extending to the outside of the reinforced concrete structure 4. Therefore, after the steel structure 5 is disassembled, there is no need to cut off the pre-buried connector, which can effectively solve the problem in the prior art that after the steel structure 5 is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and makes the cutting operation inconvenient.

[0049] In addition, the embedded steel bar 1 of the present embodiment is connected to the steel bar connector 2, and the connecting bolt 3 is connected to the first threaded hole 2.1 of the steel bar connector 2 through a thread, so the connecting bolt 3 does not need to be welded, thereby avoiding the problem in the prior art that the high-strength bolts may lose strength after being welded to the steel bars in the reinforced concrete structure 4, and affecting the safety and reliability of the connection.

[0050] Specifically, the steel bar connector is provided with a second threaded hole 2.2. One end of the embedded steel bar is provided with an external thread, and the external thread of one end of the embedded steel bar is connected to the second threaded hole 2.2 through a thread. In this way, the embedded steel bar and the steel bar connector can be connected conveniently, and the connection is stable and reliable.

[0051] Furthermore, the embedded steel bar 1 and the steel bar connector 2 are connected by welding. In this way, the connection stability and reliability of the embedded steel bar 1 and the steel bar connector 2 can be improved. In this embodiment, the embedded steel bar 1 and the steel bar connector 2 are connected by spot welding. Of course, it should be noted that the embedded steel bar 1 and the steel bar connector 2 can also be connected by full welding.

[0052] Further, such as Figure 1 , Figure 2As shown, the steel bar connector 2 is composed of a connecting sleeve. A first threaded hole 2.1 is arranged in one end of the connecting sleeve, and a second threaded hole 2.2 is arranged in the other end of the connecting sleeve. In this way, the actual processing and manufacturing of the steel bar connector is facilitated.

[0053] In one implementation of this embodiment, Figure 1 , Figure 2 As shown, the inner hole of the connecting sleeve constituting the steel bar connector is a threaded hole, the inner diameter of the second threaded hole 2.2 is the same as that of the first threaded hole 2.1, and the second threaded hole 2.2 is coaxial with or parallel to the first threaded hole 2.1. The second threaded hole 2.2 and the first threaded hole 2.1 are formed by two ends of the same threaded hole. In this way, the actual processing and manufacturing of the steel bar connector 2 is facilitated.

[0054] In another implementation of this embodiment, Figure 3 As shown, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1. The inner diameter of the second threaded hole 2.2 is different from that of the first threaded hole 2.1. In this way, in the actual construction process, the embedded steel bar 1 is ensured to be connected with the second threaded hole 2.2, and the embedded steel bar 1 is prevented from being mistakenly installed in the first threaded hole 2.1.

[0055] In the third implementation of this embodiment, Figure 3 As shown, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1, and the inner diameter of the second threaded hole 2.2 is different from that of the first threaded hole 2.1, and the inner diameter of the second threaded hole 2.2 is larger than that of the first threaded hole 2.1. In this way, in the actual construction process, on the one hand, the embedded steel bar 1 can be connected to the second threaded hole 2.2 to avoid the embedded steel bar 1 being wrongly installed in the first threaded hole 2.1; on the other hand, it can also prevent the embedded steel bar 1 from extending into the first threaded hole 2.1 and affecting the subsequent installation of the connecting thread.

[0056] In the fourth implementation of this embodiment, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1, and a stopper is provided between the second threaded hole 2.2 and the first threaded hole 2.1. In this way, in the actual construction process, it can be prevented that the embedded steel bar 1 extends into the first threaded hole 2.1 and affects the subsequent installation of the connecting thread.

[0057] Of course, it should be noted that the steel bar connector can also be composed of a connector block. The axis of the second threaded hole 2.2 and the first threaded hole 2.1 can also be distributed at a set angle, for example, the angle between the axis of the second threaded hole 2.2 and the first threaded hole 2.1 is 90-180 degrees, specifically, the angle between the axis of the second threaded hole 2.2 and the first threaded hole 2.1 is 160 degrees, 150 degrees, 120 degrees, etc.

[0058] Specific embodiment three, as Figure 1 , Figure 2 , Figure 3 As shown, a pre-embedded connector for connecting a reinforced concrete structure with a steel structure comprises a pre-embedded steel bar 1, a steel bar connector 2 and a connecting bolt 3. The pre-embedded steel bar 1 is pre-embedded in a reinforced concrete structure 4. The pre-embedded steel bar 1 is in a straight line, L-shaped, T-shaped or other shape.

[0059] The steel bar connector 2 is embedded in the reinforced concrete structure 4. The steel bar connector 2 is connected to the embedded steel bar as a whole, for example, the steel bar connector 2 is connected to the embedded steel bar as a whole by threading and / or welding. A first threaded hole 2.1 is provided on the steel bar connector. The threaded opening of the first threaded hole 2.1 is connected to the outer surface of the reinforced concrete structure. The threaded opening of the first threaded hole is flush with the outer surface of the reinforced concrete structure, or the threaded opening of the first threaded hole is located on the inner side of the outer surface of the reinforced concrete structure. In this embodiment, the threaded opening of the first threaded hole is flush with the outer surface of the reinforced concrete structure.

[0060] A detachable plug 6 is provided in the threaded opening of the first threaded hole. In this embodiment, the plug is connected to the first threaded hole by a thread. Since the steel bar connector 2 is pre-buried in the reinforced concrete structure 4, during the process of pouring concrete in the reinforced concrete structure 4, concrete may enter the first threaded hole 2.1, thereby affecting the subsequent installation of the connecting bolt 3. In order to solve this problem, this embodiment uses a plug to block the threaded opening of the first threaded hole 2.1, thereby preventing concrete from entering the first threaded hole 2.1 during the process of pouring concrete.

[0061] The connecting bolt 3 is used to connect the steel structure 5. The connecting bolt 3 is located outside the reinforced concrete structure 4, and the connecting bolt 3 is detachably matched with the first threaded hole 2.1. In this embodiment, the connecting bolt 3 is a high-strength bolt. Of course, it should be noted that the connecting bolt 3 can also be a bolt of other materials.

[0062] During the specific construction of the embedded connector of this embodiment, the plug is connected to the first threaded hole through a threaded connection, and the plug is used to block the threaded opening of the first threaded hole 2.1; thereby preventing concrete from entering the first threaded hole 2.1 during the pouring of concrete. After the embedded connector is embedded in the reinforced concrete structure 4, the plug is removed before the steel structure is installed; then the steel structure 5 is connected to the reinforced concrete structure 4 by the connection bolt 3 and the first threaded hole 2.1.

[0063] The embedded connector of this embodiment embeds the steel bar connector 2 in the reinforced concrete structure 4, and the steel structure 5 is connected to the reinforced concrete structure 4 by matching the connecting bolts 3 with the first threaded holes 2.1. In this way, not only can the installation of the steel structure 5 be facilitated, but also the disassembly and reuse of the steel structure 5 can be realized; the connecting bolts 3 can also be disassembled, recycled and reused to avoid waste of connecting bolts and save costs.

[0064] like Figure 2 As shown, since the steel bar connector 2 is pre-buried in the reinforced concrete structure 4, it is equivalent to forming a first threaded hole 2.1 for connecting the steel structure 5 in the reinforced concrete structure 4. In this way, the steel bar connector 2 and the first threaded hole 2.1 can be completely buried in the reinforced concrete structure 4 without extending to the outside of the reinforced concrete structure 4. Therefore, after the steel structure 5 is disassembled, there is no need to cut off the pre-buried connector, which can effectively solve the problem in the prior art that after the steel structure 5 is disassembled, the protruding high-strength bolts need to be cut off, which increases the construction process and makes the cutting operation inconvenient.

[0065] In addition, the embedded steel bar 1 of the present embodiment is connected to the steel bar connector 2, and the connecting bolt 3 is connected to the first threaded hole 2.1 of the steel bar connector 2 through a thread, so the connecting bolt 3 does not need to be welded, thereby avoiding the problem in the prior art that the high-strength bolts may lose strength after being welded to the steel bars in the reinforced concrete structure 4, and affecting the safety and reliability of the connection.

[0066] Specifically, the steel bar connector 2 is provided with a second threaded hole 2.2. One end of the embedded steel bar is provided with an external thread, and the external thread of one end of the embedded steel bar 1 is connected to the second threaded hole 2.2 through a thread. In this way, the embedded steel bar and the steel bar connector can be easily connected, and the connection is stable and reliable.

[0067] Furthermore, the embedded steel bar 1 and the steel bar connector 2 are connected by welding. In this way, the connection stability and reliability of the embedded steel bar 1 and the steel bar connector 2 can be improved. In this embodiment, the embedded steel bar 1 and the steel bar connector 2 are connected by spot welding. Of course, it should be noted that the embedded steel bar 1 and the steel bar connector 2 can also be connected by full welding.

[0068] Furthermore, the steel bar connector 2 is composed of a connecting sleeve. The first threaded hole 2.1 is arranged in one end of the connecting sleeve, and the second threaded hole 2.2 is arranged in the other end of the connecting sleeve. In this way, the actual processing and manufacturing of the steel bar connector is facilitated.

[0069] In one implementation of this embodiment, Figure 1 , Figure 2 As shown, the inner hole of the connecting sleeve constituting the steel bar connector is a threaded hole, the inner diameter of the second threaded hole 2.2 is the same as that of the first threaded hole 2.1, and the second threaded hole 2.2 is coaxial with or parallel to the first threaded hole 2.1. The second threaded hole 2.2 and the first threaded hole 2.1 are formed by two ends of the same threaded hole. In this way, the actual processing and manufacturing of the steel bar connector 2 is facilitated.

[0070] In another implementation of this embodiment, Figure 3As shown, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1. The inner diameter of the second threaded hole 2.2 is different from that of the first threaded hole 2.1. In this way, in the actual construction process, the embedded steel bar 1 is ensured to be connected with the second threaded hole 2.2, and the embedded steel bar 1 is prevented from being mistakenly installed in the first threaded hole 2.1.

[0071] In the third implementation of this embodiment, Figure 3 As shown, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1, and the inner diameter of the second threaded hole 2.2 is different from that of the first threaded hole 2.1, and the inner diameter of the second threaded hole 2.2 is larger than that of the first threaded hole 2.1. In this way, in the actual construction process, on the one hand, the embedded steel bar 1 can be connected to the second threaded hole 2.2 to avoid the embedded steel bar 1 being wrongly installed in the first threaded hole 2.1; on the other hand, it can also prevent the embedded steel bar 1 from extending into the first threaded hole 2.1 and affecting the subsequent installation of the connecting thread.

[0072] In the fourth implementation of this embodiment, the second threaded hole 2.2 is coaxial or parallel to the first threaded hole 2.1, and a stopper is provided between the second threaded hole 2.2 and the first threaded hole 2.1. In this way, in the actual construction process, it can be prevented that the embedded steel bar 1 extends into the first threaded hole 2.1 and affects the subsequent installation of the connecting thread.

[0073] Of course, it should be noted that the steel bar connector can also be composed of a connector block. The axis of the second threaded hole 2.2 and the first threaded hole 2.1 can also be distributed at a set angle, for example, the angle between the axis of the second threaded hole 2.2 and the first threaded hole 2.1 is 90-180 degrees, specifically, the angle between the axis of the second threaded hole 2.2 and the first threaded hole 2.1 is 160 degrees, 150 degrees, 120 degrees, etc.

[0074] Specific embodiment four, as Figure 2 As shown, a connection structure between a steel structure and a reinforced concrete structure includes a pre-embedded connector. The specific structure of the pre-embedded connector refers to the specific embodiment 1 or the specific embodiment 2 or the specific embodiment 3. The steel structure is provided with a bolt through hole, and the connecting bolt passes through the bolt through hole and is threadedly connected with the first threaded hole to fix the steel structure on the reinforced concrete structure.

[0075] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A pre-buried connector, characterized in that it comprises: Embedded steel bars (1), the embedded steel bars (1) are embedded in the reinforced concrete structure (4); A steel bar connector (2) connected to the embedded steel bar (1), the steel bar connector (2) being embedded in the reinforced concrete structure (4), and a first threaded hole (2.1) being provided on the steel bar connector (2); The connecting bolt (3) connecting the steel structure (5) is located outside the reinforced concrete structure (4) and is detachably matched with the first threaded hole (2.1).

2. The embedded connector according to claim 1, characterized in that: The steel bar connector (2) is provided with a second threaded hole (2.2), one end of the embedded steel bar (1) is provided with an external thread, and the external thread at one end of the embedded steel bar (1) is threadedly connected to the second threaded hole (2.2).

3. The embedded connector according to claim 2, characterized in that: The steel bar connector (2) is composed of a connecting sleeve, wherein the first threaded hole (2.1) is arranged in one end of the connecting sleeve, and the second threaded hole (2.2) is arranged in the other end of the connecting sleeve.

4. The embedded connector according to claim 2 or 3, characterized in that: The first threaded hole (2.1) and the second threaded hole (2.2) are formed by two ends of the same threaded hole.

5. The embedded connector according to claim 2 or 3, characterized in that: The first threaded hole (2.1) and the second threaded hole (2.2) have different inner diameters.

6. The embedded connector according to claim 1, 2 or 3, characterized in that: The embedded steel bars (1) and the steel bar connector (2) are connected by welding.

7. The embedded connector according to claim 1, 2 or 3, characterized in that: The threaded opening of the first threaded hole (2.1) is in communication with the outer surface of the reinforced concrete structure (4), and the outer surface of the reinforced concrete structure (4) where the first threaded hole (2.1) is located is flush with the threaded opening of the first threaded hole (2.1).

8. The embedded connector according to claim 1, 2 or 3, characterized in that: The connecting bolts (3) are high-strength bolts.

9. The embedded connector according to claim 1, 2 or 3, characterized in that: A detachable plug (6) is provided in the threaded opening of the first threaded hole (2.1).

10. A connection structure between a steel structure and a reinforced concrete structure, characterized in that: The embedded connector comprises the embedded connector according to any one of claims 1 to 9, wherein a bolt through hole is provided on the steel structure (5), and a connecting bolt (3) passes through the bolt through hole and is threadedly connected to the first threaded hole (2.1) to fix the steel structure to the reinforced concrete structure (4).

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