A connecting structure of a reinforced concrete column and a beam and a connecting method thereof

Abstract

The application discloses a connecting structure and a connecting method of a steel reinforced concrete column and a beam, relates to the technical field of steel reinforced concrete, and comprises a steel, a steel beam horizontally distributed on the side of the steel, a circle of transverse ribs distributed on the outer sides of the steel and the steel beam, a plurality of first binding ribs uniformly bound on the outer sides of each group of the transverse ribs, a connecting mechanism arranged between the connecting ends of the steel and the steel beam, the connecting mechanism comprising a connecting plate distributed on one side of the steel, and a corbel plate welded at the end of the connecting plate; and reinforcing mechanisms for improving shearing resistance are arranged at the upper and lower ends of the connecting mechanism, the reinforcing mechanisms comprising sleeve plates slidably clamped on the outer sides of the corbel plates, main reinforcing plates welded at the top of the sleeve plates, and end sleeve plates welded at the top of the main reinforcing plates. The connecting structure and the connecting method of the steel reinforced concrete column and the beam have the effects of convenient operation and high structural strength.

Description

Technical Field

[0001] This invention relates to the field of steel-concrete composite technology, and in particular to a connection structure and method for steel-concrete composite columns and beams. Background Technology

[0002] The connection structure between steel reinforced concrete columns (SRC columns) and concrete beams (RC beams) is a hybrid joint structure. It is mainly used in building or bridge engineering to reliably connect steel reinforced concrete columns containing steel sections to ordinary reinforced concrete beams. It must meet requirements such as strength, stiffness, ductility, and construction feasibility to ensure the overall safety, stability, and durability of the structure.

[0003] There are many ways to connect steel-concrete composite columns and concrete beams. The most common method is to directly weld the longitudinal reinforcement of the beam to the steel section or to use a connecting plate (steel bracket) for transition. However, in actual operation, the welding method is prone to local stress concentration at the welded part, which leads to early cracking in the joint area. Moreover, on-site welding is easily affected by the environment and requires a high level of skill from the welders. In addition to being cumbersome, it is also easy to produce defects such as porosity, slag inclusion, and uneven weld points. At the same time, the shear resistance of the traditional steel-concrete composite column and beam connection structure in the joint area needs to be improved. Summary of the Invention

[0004] This invention discloses a connection structure and method for steel-concrete composite columns and beams, aiming to solve the technical problems of the cumbersome operation and the need to improve the structural strength of existing connection methods for steel-concrete composite columns and concrete beams.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A connection structure between a steel-concrete composite column and a beam includes a steel section, steel beams horizontally distributed on the sides of the steel section, a ring of horizontal reinforcement bars distributed on the outer sides of both the steel section and the steel beams, and several Class I binding bars evenly tied to the outer sides of each group of horizontal reinforcement bars. A connection mechanism is provided between the connection ends of the steel section and the steel beams. The connection mechanism includes a connection plate distributed on one side of the steel section, a corbel plate welded to the end of the connection plate, and the steel beams slidably inserted into the interior of the corbel plate.

[0007] The upper and lower ends of the connecting mechanism are provided with reinforcement mechanisms to improve shear resistance. The reinforcement mechanism includes a sleeve plate that slides and engages with the outside of the bracket plate. A main reinforcing plate is welded to the top of the sleeve plate. The main reinforcing plate has an inclined structure. An end sleeve plate is welded to the top of the main reinforcing plate. A T-shaped slot is provided through the sleeve plate.

[0008] By incorporating a connection mechanism into the traditional steel-concrete column and beam connection method, a bolted fixing method is used instead of the traditional welding fixing method. The connection between the steel-concrete column and the concrete beam is completed using quick-connect and quick-joint methods. In addition, a reinforcement component is added to the connection mechanism to improve the shear resistance at the connection node of the concrete column and beam. This not only improves the structural strength but also enhances the ease of operation of the traditional connection structure.

[0009] In a preferred embodiment, a backing plate is distributed on the other side of the steel profile, the connecting plate and the backing plate are symmetrically distributed, and are fixedly installed on both sides of the steel profile by a number of sets of high-strength bolts.

[0010] By setting connecting plates and backing plates on both sides of the steel profile and fixing them with high-strength bolts, and using the corbel plate structure pre-welded to the end of the connecting plate to cooperate with the insertion of the steel beam, the steel profile and the steel beam can be quickly connected. In this way, bolted fixing replaces the traditional welding fixing, which greatly improves the convenience of operation and reduces the drawbacks caused by local stress concentration due to welding.

[0011] In a preferred embodiment, the end sleeve plate, the connecting plate, and the backing plate are all fixedly connected by the high-strength bolts. A secondary reinforcing plate is welded and installed in the middle of the main reinforcing plate. The secondary reinforcing plate and the transverse ribs distributed on the outside of the steel section are in extrusion contact. Several transverse slots are opened on the outside of the main reinforcing plate. First-class and second-class ribs are sequentially sleeved and tied on the outside of the transverse slots.

[0012] By adding a main reinforcing plate structure to the steel profile and steel beam based on the steel profile, which is fixedly connected by end sleeve plates and connecting plates, the diagonal bracing structure of the main reinforcing plate is used to improve the shear resistance at the connection node of the steel profile and steel beam, thereby significantly improving the structural strength of the connection node. The secondary reinforcing plate in the middle of the main reinforcing plate can work with the transverse reinforcement to improve the transverse strength of the entire steel structure. The transverse groove on the outside of the main reinforcing plate can work with the first-class and second-class binding reinforcement to improve the overall strength of the entire steel structure after injection molding.

[0013] In a preferred embodiment, each of the secondary reinforcing plates has a sleeve welded to its top, and one of the transverse ribs is inserted into the inside of the sleeve.

[0014] By further installing a sleeve structure on the basis of the secondary reinforcing plate to fix the transverse reinforcement, the sleeve structure, together with the support of the secondary reinforcing plate, can improve the transverse and longitudinal strength of the entire steel structure.

[0015] In a preferred embodiment, the outer side of the socket plate has several rows of Class II mounting ports. The expansion bolts pass through the interior of the Class II mounting ports and sequentially form a fixed connection between the steel beam, the corbel plate, and the socket plate. The inner diameter of the Class II mounting ports is larger than that of the Class I mounting ports. The end of the expansion bolt is threaded with an expansion nut, and the horizontally moving expansion nut presses against the Class II mounting ports.

[0016] By additionally setting up a type I and type II mounting port structure of different sizes, and utilizing the aligned distribution of the type I and type II mounting ports, combined with the squeezing and pushing of the expansion nut at the end of the expansion bolt, the two mounting ports are aligned, and a squeezing and pushing force is generated on the installed kit, thereby further improving the support efficiency of the main reinforcing plate.

[0017] A connection method for a steel-concrete composite column and beam connection structure includes the following steps;

[0018] S1: The steel section is hoisted to the top of the foundation using a crane, and then fixed to the top of the foundation according to the construction plan;

[0019] S2: The connecting mechanism is fixedly installed in the middle of the steel section, and the reinforcing mechanism is installed at the upper and lower ends of the connecting mechanism.

[0020] S3: Insert the steel beam horizontally from the end of the connecting mechanism and fix it with threads;

[0021] S4: Then, the workers used binding wire and plug-in fixing methods to install the horizontal reinforcement and the first type of binding reinforcement on the outside of the steel section and the steel beam respectively;

[0022] S5: After verifying that the entire structural connection is correct, seal the entire frame with slabs and pour concrete grout.

[0023] As can be seen from the above, the connection structure and connection method of steel-concrete composite columns and beams provided by the present invention have the following technical effects.

[0024] By installing connecting plates and backing plates on both sides of the steel profile, which are fixed together by high-strength bolts, and utilizing the pre-welded bracket plate structure at the end of the connecting plate in conjunction with the insertion of the steel beam, a rapid connection between the steel profile and the steel beam is achieved. This bolted fixing method replaces the traditional welding fixing, significantly improving operational convenience and reducing the drawbacks caused by local stress concentration due to welding. At the connection node between the steel profile and the beam, a main reinforcing plate structure is further installed, which is fixed by end sleeve plates and sleeve plates. The diagonal bracing structure of the main reinforcing plate improves the shear resistance at the connection node between the steel profile and the beam, thereby significantly improving the structural strength of the connection node. The secondary reinforcing plate in the middle of the main reinforcing plate can work with the transverse reinforcement to improve the transverse strength of the entire steel structure. The transverse groove on the outside of the main reinforcing plate can work with the first-class and second-class binding reinforcement to improve the overall strength of the entire steel structure after injection molding. As a result, this connection structure achieves the functions of simple and quick construction and multi-dimensional improvement of structural strength. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure proposed in this invention.

[0026] Figure 2 This is a schematic diagram of the finished concrete casting structure proposed in this invention.

[0027] Figure 3 This is a schematic diagram of the connection structure between the steel profile and the steel beam proposed in this invention.

[0028] Figure 4 This is an exploded view of the overall structure proposed in this invention.

[0029] Figure 5 This is a schematic diagram of the connection mechanism structure proposed in this invention.

[0030] Figure 6 This is a schematic diagram of the reinforcement mechanism proposed in this invention.

[0031] Figure 7 This is a schematic diagram of the expansion bolt structure proposed in this invention.

[0032] Figure 8 This is a schematic diagram of a type of mounting port structure proposed in this invention.

[0033] Figure 9 The present invention proposes Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0034] In the diagram: 1. Steel section; 2. Steel beam; 3. Connecting mechanism; 301. Connecting plate; 302. Bracket plate; 303. Backing plate; 304. High-strength bolt; 305. Type I mounting port; 306. Expansion bolt; 3061. Expansion nut; 4. Reinforcing mechanism; 401. Sleeve plate; 402. Main reinforcing plate; 4021. Reinforcing rib; 403. End sleeve plate; 404. Secondary reinforcing plate; 4041. Longitudinal groove; 405. Transverse groove; 406. Type II binding reinforcement; 407. Sleeve; 408. Type II mounting port; 5. Horizontal reinforcement; 6. Type I binding reinforcement. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] The connection structure and method for steel-concrete composite columns and beams disclosed in this invention are mainly applied to scenarios where steel-concrete composite columns and beams are connected and installed.

[0037] Reference Figures 1 to 9 A connection structure between a steel-concrete composite column and a beam includes a steel section 1, a steel beam 2 horizontally distributed on the side of the steel section 1, a ring of horizontal reinforcing bars 5 distributed on the outer side of both the steel section 1 and the steel beam 2, and several Class I binding bars 6 evenly tied on the outer side of each group of horizontal reinforcing bars 5. A connection mechanism 3 is provided between the connection ends of the steel section 1 and the steel beam 2. The connection mechanism 3 includes a connection plate 301 distributed on one side of the steel section 1, and a corbel plate 302 welded to the end of the connection plate 301. The steel beam 2 is slidably inserted into the interior of the corbel plate 302.

[0038] The upper and lower ends of the connecting mechanism 3 are provided with a reinforcing mechanism 4 to improve shear resistance. The reinforcing mechanism 4 includes a sleeve plate 401 that slides and engages with the outside of the bracket plate 302. A main reinforcing plate 402 is welded to the top of the sleeve plate 401. The main reinforcing plate 402 has an inclined structure. An end sleeve plate 403 is welded to the top of the main reinforcing plate 402. A T-shaped slot is provided through the sleeve plate 401.

[0039] The diagonal bracing structure of the main reinforcing plate 402 is used to improve the shear resistance at the connection node between the steel section 1 and the steel beam 2.

[0040] In this embodiment: workers use a crane to hoist the steel section 1 to the top of the foundation. According to the construction plan, the steel section 1 is fixed to the top of the foundation. Then, the connecting mechanism 3 is fixedly installed in the middle of the steel section 1. At the same time, the reinforcing mechanism 4 is installed at the upper and lower ends of the connecting mechanism 3. Then, the steel beam 2 is horizontally inserted from the end of the connecting mechanism 3 and fixed by threads. After that, workers use binding wire and plug-in fixing to install the horizontal reinforcement 5 and the first-class binding reinforcement 6 on the outside of the steel section 1 and the steel beam 2 respectively. After checking that the connection of the entire structure is correct, the entire frame is sealed with plates and concrete grout is poured.

[0041] Reference Figure 1 , Figures 3 to 8 In a preferred embodiment, a backing plate 303 is distributed on the other side of the steel section 1. The connecting plate 301 and the backing plate 303 are symmetrically distributed and fixed to both sides of the steel section 1 by a number of sets of high-strength bolts 304.

[0042] The steel section 1 is hoisted to the top of the foundation using a crane. According to the construction plan, the steel section 1 is fixed to the top of the foundation. Then, the connecting plate 301 and the backing plate 303 are symmetrically attached to both sides of the steel section 1. At the same time, several high-strength bolts 304 are passed through the inside of the connecting plate 301 and the backing plate 303 and fixed in the middle of the steel section 1. Meanwhile, the reinforcement mechanism 4 is installed at the upper and lower ends of the connecting mechanism 3. Then, the steel beam 2 is horizontally inserted into the bracket plate 302 at the end of the connecting plate 301 and fixed with threads.

[0043] Reference Figure 1 , Figures 3 to 6 , Figure 8 In a preferred embodiment, the end sleeve plate 403, the connecting plate 301, and the backing plate 303 are all fixedly connected by high-strength bolts 304. A secondary reinforcing plate 404 is welded and installed in the middle of the main reinforcing plate 402. The secondary reinforcing plate 404 and the transverse ribs 5 distributed on the outside of the steel section 1 are in contact by compression. Several transverse slots 405 are opened on the outside of the main reinforcing plate 402. First-class binding ribs 6 and second-class binding ribs 406 are sequentially sleeved and tied on the outside of the transverse slots 405.

[0044] When installing the connecting plate 301, the worker holds the main reinforcing plate 402 and slides the sleeve plates 401 at the ends of the two main reinforcing plates 402 onto the outside of the bracket plate 302, causing the end sleeve plate 403 to fit against the connecting plate 301. Then, the end sleeve plate 403, the connecting plate 301, and the backing plate 303 are fixed with high-strength bolts 304. After fixing the end sleeve plate 403, the worker horizontally inserts the steel beam 2 from the bracket plate 302 at the end of the connecting plate 301 and threads the steel beam 2 into place. The corbel plate 302 and the connecting plate 401 are fixed together. Then, the workers install the transverse reinforcement 5 and the first-class binding reinforcement 6 on the outside of the steel section 1 and the steel beam 2 respectively. During this process, some of the first-class binding reinforcement 6 are tied in the transverse slot 405 on the outside of the main reinforcing plate 402. At the same time, the workers tie the second-class binding reinforcement 406 in the transverse slot 405 for reinforcement. The secondary reinforcing plate 404 located in the middle of the main reinforcing plate 402 will squeeze and contact some of the transverse reinforcement 5 distributed on the outside of the steel section 1, thereby improving the structural strength after the concrete is poured.

[0045] Among them, the main reinforcing plate 402 has a reinforcing rib 4021 welded and fixed in the middle to improve the structural strength of the main reinforcing plate 402, while the two ends of the secondary reinforcing plate 404 are symmetrically provided with longitudinal slots 4041, and the transverse ribs 5 are engaged in the interior of the longitudinal slots 4041.

[0046] Specifically, each secondary reinforcing plate 404 has a sleeve 407 welded to its top, and a horizontal rib 5 is inserted into the inside of the sleeve 407, thereby improving the structural strength of the steel section 1 after concrete injection molding.

[0047] Reference Figures 4 to 8 In a preferred embodiment, several sets of symmetrically distributed first-class mounting ports 305 are provided at the ends of the steel beam 2 and on the outer side of the corbel plate 302. Expansion bolts 306 are fixedly installed inside the first-class mounting ports 305 to fix the steel beam 2 and the corbel plate 302. Several rows of second-class mounting ports 408 are provided on the outer side of the sleeve plate 401. The expansion bolts 306 pass through the interior of the second-class mounting ports 408 and sequentially fix the steel beam 2, the corbel plate 302 and the sleeve plate 401. The inner diameter of the second-class mounting ports 408 is larger than that of the first-class mounting ports 305. The ends of the expansion bolts 306 are threaded with expansion nuts 3061. The horizontally moving expansion nuts 3061 press against the second-class mounting ports 408.

[0048] When the worker slides the connecting plates 401 at the ends of the two main reinforcing plates 402 onto the outside of the bracket plate 302 and horizontally inserts the steel beam 2 from the bracket plate 302 at the end of the connecting plate 301, the second type of mounting port 408 at the bottom of the connecting plate 401 will align with the first type of mounting port 305 at the end of the steel beam 2 and on the outside of the bracket plate 302. At this time, the worker passes the expansion bolt 306 through the first type of mounting port 305 and the second type of mounting port 408, and rotates the expansion nut 3061 onto the expansion bolt 306. On the outside, the electric wrench rotates the expansion nut 3061, causing the expansion nut 3061 to move towards the second type of mounting port 408 and press against the second type of mounting port 408. Since the inner diameter of the second type of mounting port 408 is larger than that of the first type of mounting port 305, the pressed second type of mounting port 408 will push the socket plate 401 to move towards the steel section 1. In this way, while fixing the steel beam 2, the corbel plate 302 and the socket plate 401, it provides support for the main reinforcing plate 402 and improves the structural strength of the reinforcement mechanism 4.

[0049] Working principle: During use, workers use a crane to hoist the steel section 1 to the top of the foundation. According to the construction plan, the steel section 1 is fixed to the top of the foundation. Then, the workers hold the connecting plate 301 and the main reinforcing plate 402 and slide the sleeve plates 401 at the ends of the two main reinforcing plates 402 onto the outside of the bracket plate 302, so that the end sleeve plates 403 are attached to the side of the connecting plate 301. Then, the workers symmetrically attach the connecting plate 301 and the backing plate 303 to both sides of the steel section 1. Simultaneously, several high-strength bolts 304 are sequentially passed through the connecting plate 301, end sleeve plate 403, and backing plate 303 and fixedly installed in the middle of the steel section 1. After the end sleeve plate 403 is fixed, the worker inserts the steel beam 2 into the T-shaped slot of the connecting plate 401 and simultaneously into the bracket plate 302 at the end of the connecting plate 301. At this time, the second type of installation port 408 at the bottom of the connecting plate 401 will meet the first type of installation port 408 at the end of the steel beam 2 and the outside of the bracket plate 302. With the mounting openings 305 aligned, the worker passes the expansion bolt 306 through both the first-type mounting opening 305 and the second-type mounting opening 408, and rotates the expansion nut 3061 onto the outside of the expansion bolt 306. Simultaneously, an electric wrench rotates the expansion nut 3061, causing it to move towards the second-type mounting opening 408 and expand and compress it, thereby fixing the steel beam 2, the corbel plate 302, and the connecting plate 401. Afterwards, the worker installs the transverse reinforcing bar 5 and... Type I reinforcing bars 6 are installed on the outer sides of the steel section 1 and the steel beam 2. During this process, some of the Type I reinforcing bars 6 are tied into the transverse grooves 405 on the outer side of the main reinforcing plate 402. At the same time, workers tie Type II reinforcing bars 406 into the transverse grooves 405 for reinforcement. The secondary reinforcing plate 404 located in the middle of the main reinforcing plate 402 will compress and contact some of the transverse reinforcing bars 5 distributed on the outer side of the steel section 1, thereby improving the structural strength after the concrete is poured and completing the construction of the entire frame. The specific structure is shown in the attached figure. Figure 1 As shown; after verifying that all structural connections are correct, the entire frame is sealed with plates and concrete grout is poured. Once the concrete has solidified, the plates are removed to obtain the finished concrete product. The specific structure is shown in the attached figure. Figure 2 As shown.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A connection structure between a steel-concrete composite column and a beam, comprising a steel section (1) and steel beams (2) horizontally distributed on the sides of the steel section (1), characterized in that, Both the steel section (1) and the steel beam (2) have a ring of horizontal ribs (5) distributed on their outer sides. Each group of horizontal ribs (5) is evenly bound with several Class I binding ribs (6). A connecting mechanism (3) is provided between the connecting ends of the steel section (1) and the steel beam (2). The connecting mechanism (3) includes a connecting plate (301) distributed on one side of the steel section (1). A corbel plate (302) is welded to the end of the connecting plate (301). The steel beam (2) is slidably inserted into the inside of the corbel plate (302). A backing plate (303) is distributed on the other side of the steel section (1). The connecting plate (301) and the backing plate (303) are symmetrically distributed. The connecting mechanism (3) is provided with a reinforcing mechanism (4) at both the upper and lower ends to improve shear resistance. The reinforcing mechanism (4) includes a sleeve plate (401) that slides and engages with the outside of the corbel plate (302). A main reinforcing plate (402) is welded to the top of the sleeve plate (401). The main reinforcing plate (402) has an inclined structure. An end sleeve plate (403) is welded to the top of the main reinforcing plate (402). A T-shaped slot is provided through the sleeve plate (401). The main reinforcing plate (402) has... Several transverse slots (405) are provided on the outer side. A first-class binding rib (6) and a second-class binding rib (406) are sequentially sleeved and tied on the outer side of the transverse slots (405). A secondary reinforcing plate (404) is welded and installed in the middle of the main reinforcing plate (402). The secondary reinforcing plate (404) and the transverse ribs (5) distributed on the outer side of the steel section (1) are in extrusion contact. The end sleeve plate (403), the connecting plate (301) and the back fixing plate (303) are all fixedly connected by high-strength bolts (304).

2. The connection structure between a steel-concrete composite column and a beam according to claim 1, characterized in that, The steel beam (2) and the outer side of the corbel plate (302) are provided with several sets of symmetrically distributed first-class installation ports (305). Expansion bolts (306) are fixedly installed inside the first-class installation ports (305) to fix the steel beam (2) and the corbel plate (302).

3. The connection structure between a steel-concrete composite column and a beam according to claim 1, characterized in that, The main reinforcing plate (402) is welded and fixed with a reinforcing rib (4021) in the middle.

4. The connection structure between a steel-concrete composite column and a beam according to claim 1, characterized in that, The secondary reinforcing plate (404) has longitudinal slots (4041) symmetrically opened at both ends, and the transverse rib (5) is engaged inside the longitudinal slots (4041).

5. The connection structure between a steel-concrete composite column and a beam according to claim 1, characterized in that, Each of the sub-reinforcing plates (404) has a sleeve (407) welded to its top, and a transverse rib (5) is inserted into the inside of the sleeve (407).

6. The connection structure between a steel-concrete composite column and a beam according to claim 2, characterized in that, The outer side of the socket plate (401) is provided with several rows of Class II mounting ports (408). The expansion bolts (306) pass through the inside of the Class II mounting ports (408) and form a fixed connection between the steel beam (2), the corbel plate (302) and the socket plate (401) in sequence.

7. The connection structure between a steel-concrete composite column and a beam according to claim 6, characterized in that, The inner diameter of the second type of mounting port (408) is larger than that of the first type of mounting port (305). The end of the expansion bolt (306) is threaded with an expansion nut (3061). The horizontally moving expansion nut (3061) presses against the second type of mounting port (408).

8. The connection method for a steel-concrete composite column and beam connection structure according to claim 1, characterized in that, Includes the following steps; S1: The steel section (1) is hoisted to the top of the foundation by a crane, and the steel section (1) is fixed to the top of the foundation according to the construction plan; S2: Fix the connecting mechanism (3) to the middle of the steel section (1), and at the same time install the reinforcing mechanism (4) at the upper and lower ends of the connecting mechanism (3); S3: Insert the steel beam (2) horizontally from the end of the connecting mechanism (3) and fix it with threads; S4: Then the workers used binding wire and plug-in fixing to install the horizontal bar (5) and the first type of binding bar (6) on the outside of the steel section (1) and the steel beam (2) respectively; S5: After verifying that the entire structural connection is correct, seal the entire frame with slabs and pour concrete grout.

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