Steel beam and concrete wall butt joint construction joint

Abstract

The utility model relates to the technical field of building construction, specifically disclose a kind of steel beam and concrete wall butt joint construction joint, including wall, steel beam and connecting component, steel skeleton is equipped in wall, connecting component includes force transmitter, embedded steel plate and two connecting pieces, force transmitter includes force transmission plate one and two force transmission plate two, two force transmission plate two are vertically welded in force transmission plate one both sides, the web side of steel skeleton and the side plate surface of rectangular steel plate are vertically welded and fixed respectively in both ends of force transmitter, the web one end of steel beam and the multiple connecting holes corresponding on connecting piece are all set up, the multiple connecting holes between steel beam and the multiple connecting holes between connecting piece are all corresponding array state distribution, two connecting pieces are respectively arranged in the web both sides of steel beam, and are connected and fixed with the web of steel beam by bolt, two connecting pieces are fixed with embedded steel plate simultaneously, to reduce on-site welding, shorten construction cycle, and force transmission is efficient and dispersed, embedded steel plate stress concentration reduces, improve the ability of resisting external force.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a construction joint for connecting steel beams and concrete walls. Background Technology

[0002] In prefabricated buildings and steel-concrete composite structures, the connection between steel beams and concrete walls must simultaneously satisfy the requirements of transmitting bending moment and shear force, as well as ease of construction and compatibility with prefabrication. The existing technical problems are that the steel beams are directly welded using pre-embedded steel plates, and the welds are prone to fatigue cracking due to stress concentration. In addition, the concrete walls lack steel reinforcement to cooperate in bearing the load, making the walls prone to cracking. Traditional angle steel and corbel connection nodes require a large amount of on-site welding, resulting in poor positioning accuracy and low adaptability. Hinged nodes cannot transmit bending moment, leading to a decrease in the overall lateral stiffness of the structure and poor resistance to external forces. Utility Model Content

[0003] The purpose of this utility model is to provide a construction node for connecting steel beams and concrete walls. The technical problem to be solved is that the existing technology directly uses pre-embedded steel plates to weld steel beams. The welds are prone to fatigue cracking due to stress concentration. Moreover, there is no steel skeleton in the concrete wall to cooperate in bearing the force, and the wall is prone to cracks. Traditional angle steel and corbel connection nodes require a lot of on-site welding, which has poor positioning accuracy, low adaptability, reduced overall lateral stiffness, and poor resistance to external forces.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A construction joint for connecting a steel beam and a concrete wall includes a wall, a steel beam connected to the wall, and a connecting component between the wall and the steel beam. The wall is a concrete wall with a steel frame inside, the steel frame being vertically arranged H-beams. The connecting component includes a force-transmitting element, an embedded steel plate, and two connecting pieces. The force-transmitting element and the embedded steel plate are both located inside the wall, while the connecting pieces are located on the outside of the wall. The force-transmitting element has a cross-shaped cross section and includes a first force-transmitting plate and two second force-transmitting plates. The two second force-transmitting plates are vertically welded to both sides of the first force-transmitting plate, and both ends of the second force-transmitting plates are flush with both ends of the first force-transmitting plate. Both ends of the force-transmitting element are respectively connected to one side of the web of the steel frame. The steel beam is welded perpendicularly to one side of the rectangular steel plate. The connecting parts are short angle steel sections, including side plate one and side plate two. The steel beam is an H-beam. Multiple connecting holes are correspondingly opened on one end of the web of the steel beam and on side plate one of the connecting parts. The multiple connecting holes on the steel beam and side plate one are distributed in a corresponding array. The two connecting parts are respectively located on both sides of the web of the steel beam. Side plate two is connected and fixed to the web of the steel beam by bolts. Multiple connecting holes are opened on side plate two of the connecting parts and on the embedded steel plate. The connecting holes on the embedded steel plate are respectively set on side plate two of the two connecting parts. Side plate two of the two connecting parts is simultaneously fixed to the embedded steel plate by anchor bolts.

[0005] Furthermore, both the first force transmission plate and the two second force transmission plates are rectangular steel plates, and the width of the first force transmission plate is twice the width of the second force transmission plate.

[0006] Furthermore, the web surface of the steel frame is parallel to the wall surface, and the flanges of the steel frame are perpendicular to the two side surfaces of the wall.

[0007] Furthermore, the embedded steel plate is a rectangular steel plate, and the side of the embedded steel plate away from the steel frame is flush with the corresponding side wall surface.

[0008] Furthermore, the width of the first force transmission plate is smaller than the distance between the two flange plates of the steel frame.

[0009] Furthermore, the steel frame is vertically continuous in the middle of the wall.

[0010] Compared with the prior art, this utility model has the following features and beneficial effects: This utility model, by setting up steel frames, force transmission components, and connectors, has strong construction adaptability. The steel beams and angle steel are prefabricated and bolted together in the factory, reducing on-site welding. The pre-embedded steel plates and force transmission components are embedded in advance, requiring only anchor bolts for on-site fixation, thus shortening the construction cycle. The force transmission is efficient and distributed. The cross-shaped force transmission component decomposes the load into the main force transmission of the steel frame and the collaborative force transmission of the concrete. The stress concentration of the pre-embedded steel plate is reduced, improving the resistance to external forces. This solves the technical problems of using pre-embedded steel plates to weld steel beams, which are prone to fatigue cracking due to stress concentration in the welds, and the lack of steel frames in the concrete walls to cooperate in bearing the force, which makes the walls prone to cracking. Traditional angle steel and corbel connection nodes require a lot of on-site welding, resulting in poor positioning accuracy, low adaptability, reduced overall lateral stiffness, and poor resistance to external forces. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of aa.

[0012] Attached reference numerals: 1. Wall; 2. Steel beam; 3. Steel frame; 4. Force transmission component; 401. Force transmission plate one; 402. Force transmission plate two; 5. Embedded steel plate; 6. Connector; 601. Side plate one; 602. Side plate two; 7. Connecting hole. Detailed Implementation

[0013] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0014] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0015] This utility model discloses a construction joint for connecting a steel beam and a concrete wall, such as... Figure 1 and Figure 2 As shown, the structure includes a wall, a steel beam connected to the wall, and connecting components between the wall and the steel beam. The wall is a concrete wall with a steel frame embedded within it. The steel frame is an H-beam, vertically extending along the middle of the wall. The web of the steel frame is parallel to the wall surface, and the flanges are perpendicular to the side surfaces of the wall. The connecting components include a force-transmitting component, an embedded steel plate, and two connectors. The force-transmitting component and the embedded steel plate are located inside the wall, while the connectors are located on the outside of the wall. The cross-section of the force-transmitting component is shown. The force transmission component is cross-shaped, consisting of a first force transmission plate and two second force transmission plates. Both the first and second force transmission plates are rectangular steel plates. The width of the first force transmission plate is twice the width of the second force transmission plate, and the width of the first force transmission plate is less than the distance between the two flanges of the steel frame. The two second force transmission plates are perpendicularly welded to the first force transmission plate in a cross shape on both sides of the first force transmission plate. The ends of the second force transmission plates are flush with the ends of the first force transmission plate. The embedded steel plate is a rectangular steel plate. The two ends of the force transmission component are perpendicularly welded and fixed to one side of the web of the steel frame and one side of the rectangular steel plate, respectively. The side of the steel plate furthest from the steel frame is flush with the corresponding side wall surface. The connectors are short angle steel sections, including side plate one and side plate two. The steel beam is an H-beam, perpendicularly connected to the wall surface. The two flanges of the steel beam are arranged vertically. Multiple connection holes are correspondingly opened at one end of the web of the steel beam and on side plate one of the connectors. The multiple connection holes on the steel beam and on side plate one are distributed in a corresponding array. The two connectors are respectively located on both sides of the web of the steel beam and are bolted to the web of the steel beam. For connection and fixation, the second side plate of the connector extends to the outside of the steel beam or is flush with the corresponding end of the steel beam. Multiple connection holes are provided on the second side plate of the connector and the embedded steel plate. The connection holes on the embedded steel plate are respectively set on the second side plate of the two connectors. The multiple connection holes on the second side plate of the connector and the embedded steel plate are distributed in a corresponding array. The second side plate of the two connectors are simultaneously fixed to the side plate of the embedded steel plate away from the steel frame by anchor bolts or expansion bolts, thereby connecting and fixing the steel beam to the concrete wall.

[0016] During construction, the steel frame is first fabricated, with H-beams cut to the appropriate length. Force transmission components are then welded, with force transmission plate one and force transmission plate two fully welded using gas shielded welding, followed by ultrasonic testing. Steel beams are prefabricated, with arrayed connection holes drilled at the ends of the webs of the H-beams. Connectors are prefabricated, with short sections of angle steel cut and corresponding arrayed connection holes drilled, and edges rounded to avoid stress concentration. In the pre-embedding stage, the steel frame is first positioned, using steel reinforcement supports and a laser rangefinder to fix the steel frame, ensuring the parallelism between the steel frame web and the wall surface. For installations with a thickness not exceeding 3mm, the force transmission components and embedded steel plates are fully welded to the web of the steel frame, and the embedded steel plates are also fully welded to the force transmission components, ensuring that the outer side of the embedded steel plates fits snugly against the wall formwork. During wall pouring, concrete is poured in layers, and the vibrator is kept away from the steel frame and force transmission components to prevent misalignment. During the installation phase, the angle steel connectors are bolted together, and the angle steel connectors are bolted to the web of the steel beam and fixed with anchor bolts. The second angle steel side plate is fixed to the embedded steel plate with anchor bolts. After the anchor bolts are tightened, excess bolts are cut off and anti-corrosion treatment is performed.

[0017] This utility model features a steel frame, force transmission components, and connectors, making it highly adaptable to construction. The steel beams and angle steel are prefabricated and bolted together in the factory, reducing on-site welding. The pre-embedded steel plates and force transmission components are embedded in advance, requiring only anchor bolts for on-site fixation, which facilitates installation and shortens the construction cycle. The force transmission is efficient and distributed, with the cross-shaped force transmission components decomposing the load into the main force transmission of the steel frame and the collaborative force transmission of the concrete. The stress concentration of the pre-embedded steel plates is reduced, improving the resistance to external forces.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A construction joint for connecting a steel beam to a concrete wall, characterized in that: The system includes a wall, steel beams connected to the wall, and connecting components between the wall and the steel beams. The wall is a concrete wall with a steel frame inside, consisting of vertically arranged H-beams. The connecting components include a force-transmitting element, embedded steel plates, and two connectors. The force-transmitting element and embedded steel plates are located inside the wall, while the connectors are located on the outside of the wall. The force-transmitting element has a cross-shaped cross-section and includes a first force-transmitting plate and two second force-transmitting plates. The two second force-transmitting plates are vertically welded to both sides of the first force-transmitting plate. Both ends of the force-transmitting element are vertically welded and fixed to one side of the web of the steel frame and one side of the rectangular steel plate, respectively. The connector is a short angle steel section, including side plate one and side plate two. The steel beam is an H-beam. Multiple connection holes are correspondingly opened on one end of the web of the steel beam and on side plate one of the connector. The multiple connection holes on the steel beam and side plate one are distributed in a corresponding array. The two connectors are respectively located on both sides of the web of the steel beam. Side plate two is connected and fixed to the web of the steel beam by bolts. Multiple connection holes are opened on side plate two of the connector and on the embedded steel plate. The connection holes on the embedded steel plate are respectively set on side plate two of the two connectors. Side plate two of the two connectors are simultaneously fixed to the embedded steel plate by anchor bolts.

2. The construction joint between a steel beam and a concrete wall according to claim 1, characterized in that: The first force transmission plate and the two second force transmission plates are all rectangular steel plates. The width of the first force transmission plate is twice the width of the second force transmission plate, and the two ends of the second force transmission plate are flush with the two ends of the first force transmission plate.

3. The construction joint between a steel beam and a concrete wall according to claim 1, characterized in that: The web of the steel frame is parallel to the wall surface, and the flanges of the steel frame are perpendicular to the two side walls of the wall.

4. The construction joint between a steel beam and a concrete wall according to claim 1, characterized in that: The embedded steel plate is a rectangular steel plate, and the side of the embedded steel plate away from the steel frame is flush with the corresponding side wall surface.

5. The construction joint between a steel beam and a concrete wall according to claim 1, characterized in that: The width of the first force transmission plate is smaller than the distance between the two flange plates of the steel frame.

6. A construction joint for connecting a steel beam and a concrete wall according to any one of claims 1 to 5, characterized in that: The steel frame is vertically installed along the entire length of the middle section of the wall.

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