A concrete-steel beam connection reinforcement structure

Abstract

A kind of concrete steel beam connecting reinforcing structure. At present, the connecting joint of concrete bearing column, floor and steel beam lacks all-around wrapping reinforcing structure, and when subjected to vertical and horizontal load superposition, the joint is prone to deformation. A kind of concrete steel beam connecting reinforcing structure, comprising a node connecting steel plate, a flange steel plate, a shear resistance connecting plate, a reinforcing edge covering frame and an edge covering plate; the middle position of the node connecting steel plate is fixedly connected perpendicularly to the flange steel plate, the top and bottom of the flange steel plate are connected to the shear resistance connecting plate, the four right-angle positions of the node connecting steel plate are respectively connected to the edge covering plate, the edge covering plate is connected perpendicularly to the node connecting steel plate, and the node connecting steel plate, the flange steel plate, the shear resistance connecting plate and the edge covering plate form a concrete steel beam joint installation structure; the edge covering plate and the concrete steel beam joint installation structure are detachably connected. The utility model is applied to the field of building steel structures.

Description

Technical Field

[0001] This utility model relates to the field of building steel structures, specifically to a reinforced structure for connecting concrete steel beams. Background Technology

[0002] In building and bridge applications, the connection between concrete and steel structures is a crucial aspect of engineering practice. The connection points between concrete load-bearing columns and floor slabs and steel beams (especially cantilever beams) are critical load-bearing areas; their load-bearing capacity, shear resistance, and stability directly determine the overall structural safety. Insufficient stiffness at these connection points can lead to deformation and slippage under load, resulting in the overall structural load-bearing capacity and seismic performance failing to meet requirements.

[0003] Currently, traditional joints mostly rely on single bolts or simple welding for fixation, without designing special shear-resistant components for the shear force generated by the cantilever beam. Under long-term loads, joints are prone to loosening and displacement. Moreover, the connection joints lack a comprehensive wrapping and reinforcement structure. When subjected to the superposition of vertical and horizontal loads, the joints are prone to deformation, especially under dynamic loads such as earthquakes and strong winds, which significantly increases the structural safety risk. Summary of the Invention

[0004] This application aims to address the current problem that the connection nodes between concrete load-bearing columns, floor slabs and steel beams lack a fully enclosed reinforcement structure, making the nodes prone to deformation under the combined action of vertical and horizontal loads. Therefore, it provides a reinforced structure for the connection between concrete and steel beams.

[0005] The technical solution of this application is: A reinforced concrete-steel beam connection structure includes a node connection steel plate, a flange steel plate, a shear-resistant connection plate, a reinforcing edge frame, and an edge-binding plate. The node connecting steel plate is vertically and fixedly connected to the flange steel plate at the middle position. Two shear-resistant connecting plates are symmetrically connected to the top and bottom of the flange steel plate. Edge-binding plates are connected to the four right-angle positions of the node connecting steel plate. The edge-binding plates are vertically connected to the node connecting steel plate. The node connecting steel plate, flange steel plate, shear-resistant connecting plates and edge-binding plates constitute a concrete steel beam node installation structure. The edge-sealing plate and the concrete steel beam node installation structure are detachably connected, and the edge-sealing plate is fixedly connected to the edge-sealing plate of the concrete steel beam node installation structure through a reinforcing bolt assembly.

[0006] Furthermore, the reinforcing edge frame is a U-shaped structure, and it is mainly composed of two longitudinal angle steels and one transverse angle steel, which are welded together end to end to form a whole.

[0007] Furthermore, the steel plates of the two longitudinal angle steels on the reinforced edge frame are provided with reinforcing bolt holes A, and the reinforcing bolt holes A and B on the edge plate are aligned. The reinforcing bolt assembly passes through the reinforcing bolt holes A and B respectively to fix the reinforced edge frame and the edge plate.

[0008] Furthermore, a set of mounting holes are provided on the node connecting steel plate, and bolts are used to fix the joint between the concrete load-bearing column and the floor slab in a longitudinal manner.

[0009] Furthermore, the flange steel plate is provided with holes for installing the cantilever beam. Bolt assemblies are inserted into these holes to fix the flange steel plate and the web of the cantilever beam to be connected as a whole.

[0010] Furthermore, the shear-resistant connecting plate is an isosceles trapezoidal structure, and the shear-resistant connecting plate is fixedly connected to the node connecting steel plate with an inclined surface.

[0011] Furthermore, the distance between the two shear-resistant connecting plates is the same as the distance between the top and bottom plates of the cantilever beam, and the two shear-resistant connecting plates are fixedly connected to the top and bottom plates of the cantilever beam by welding.

[0012] Compared with the prior art, this application has the following advantages: This invention features two shear-resistant connecting plates symmetrically connected to the top and bottom of the flange steel plate. The isosceles trapezoidal shear-resistant connecting plates are precisely welded to the top and bottom plates of the cantilever beam. Combined with the bolts fixing the flange steel plate to the web of the cantilever beam, a dual shear-resistant system of bolts and welding is formed, which significantly disperses the shear force generated by the cantilever beam and avoids shear failure at the joints.

[0013] This utility model's U-shaped reinforcing edging frame is tightly connected to the edging plate with bolts, forming a wrapping reinforcement for the node installation structure; the node connecting steel plate is longitudinally fixed at the intersection of the load-bearing column and the floor slab, and the multiple components work together to effectively resist vertical, horizontal and dynamic loads, reducing the risk of node deformation.

[0014] The edge-wrapping plate and node installation structure of this utility model adopts a detachable bolt connection, so there is no need to dismantle the whole structure when maintaining or replacing components later; the reinforced edge-wrapping frame is fixed by bolt holes, which can be adapted to different specifications of nodes, improving construction efficiency and structural adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 AA section view in the middle; Figure 3 This is a schematic diagram showing the connection between the concrete-steel beam joint installation structure and the cantilever beam; Figure 4 Structural diagram of the concrete-steel beam joint installation structure; Figure 5 yes Figure 4 The main view in the middle; Figure 6 yes Figure 4 Side view in the middle; Figure 7 This is a structural diagram of the reinforced edge banding frame; Figure 8 This is a top view of the reinforced edge banding frame; In the diagram: 1. Node connecting steel plate, 2. Flange steel plate, 3. Shear-resistant connecting plate, 4. Edge-sealing plate, 5. Reinforcing edge-sealing frame, 6. Reinforcing bolt assembly, 7. Mounting hole, 8. Bolt, 9. Concrete load-bearing column, 10. Floor slab, 11. Cantilever beam, 12. Web plate, 13. Top plate, 14. Bottom plate. 41. Reinforced bolt insertion hole B; 51. Longitudinal angle steel; 52. Transverse angle steel; 53. Reinforcing bolt insertion hole A. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0017] Specific implementation method one: Combining Figure 1 — Figure 8 This embodiment describes a reinforced concrete steel beam connection structure, which includes a node connection steel plate 1, a flange steel plate 2, a shear-resistant connection plate 3, a reinforcing edge frame 5, and an edge-binding plate 4. The node connecting steel plate is vertically and fixedly connected to the flange steel plate at the middle position. Two shear-resistant connecting plates are symmetrically connected to the top and bottom of the flange steel plate. Edge-binding plates are connected to the four right-angle positions of the node connecting steel plate. The edge-binding plates are vertically connected to the node connecting steel plate. The node connecting steel plate, flange steel plate, shear-resistant connecting plates and edge-binding plates constitute a concrete steel beam node installation structure. The edge-sealing plate and the concrete steel beam node installation structure are detachably connected, and the edge-sealing plate is fixedly connected to the edge-sealing plate of the concrete steel beam node installation structure through the reinforcing bolt assembly 6.

[0018] Prepare the node connection steel plates (rectangular steel plates with pre-drilled mounting holes), flange steel plates, shear-resistant connection plates, and edge-sealing plates. The flange steel plate and the node connecting steel plate are vertically fixed at their midpoints using a full welding process, ensuring a perpendicularity error of ≤1°, forming a T-shaped main load-bearing structure. Two shear-resistant connecting plates are symmetrically welded to the top and bottom of the flange steel plate, with one beveled side fully welded to the node connecting steel plate and the other side welded flush with the edge of the flange steel plate. At each of the four right-angle positions of the node connecting steel plate, an edge-sealing plate is welded, perpendicular to the node connecting steel plate, forming the outer connecting foundation of the node.

[0019] Specific Implementation Method Two: Combining Figure 1 — Figure 8 This embodiment describes a reinforced concrete steel beam connection structure. The reinforcing edging frame is U-shaped and mainly consists of two longitudinal angle steels 51 and one transverse angle steel 52, which are welded together end to end to form a whole.

[0020] The reinforcing edging frame uses Q235 or Q345 grade angle steel as raw material. The specifications of the longitudinal and transverse angle steel must match the thickness of the steel plates used for node connections. Two longitudinal angle steels of equal length and one transverse angle steel are combined to form a U-shaped structure.

[0021] The longitudinal angle steel and the transverse angle steel are welded end to end by electric arc welding. One end of the longitudinal angle steel and both ends of the transverse angle steel are fully welded. The welding length is not less than twice the width of the angle steel leg, and the height of the weld leg is not less than the thickness of the angle steel, to ensure that the three form a seamless U-shaped frame.

[0022] Specific implementation method three: Combining Figure 1 — Figure 8 This embodiment describes a reinforced concrete steel beam connection structure. The steel plates of the two longitudinal angle steels on the reinforcing edging frame are provided with reinforcing bolt insertion holes A53, and the reinforcing bolt insertion holes A53 and B41 on the edging plate are aligned. The reinforcing bolt assembly passes through the reinforcing bolt insertion holes A and B41 respectively to fix the reinforcing edging frame and the edging plate.

[0023] On the two longitudinal angle steels of the reinforcing edge frame, make reinforcing bolt insertion holes A at equal intervals (spacing ≤ 150mm) (the hole diameter is 1-2mm larger than the diameter of the reinforcing bolt); make corresponding reinforcing bolt insertion holes B on the edge plate, and the hole diameter and number of insertion holes A and B are exactly the same.

[0024] Attach the U-shaped reinforcing edging bracket to the outside of the edging plate of the node installation structure, and adjust its position so that the insertion hole A on the longitudinal angle steel is fully aligned with the insertion hole B on the edging plate. Pass the reinforcing bolt assembly (bolt, nut, washer) through insertion holes A and B in sequence to ensure that the reinforcing edging bracket and the edging plate are tightly fitted without any loose gaps.

[0025] Specific implementation method four: Combination Figure 1 — Figure 8 This embodiment describes a reinforced concrete-steel beam connection structure. A set of mounting holes 7 are provided on the node connecting steel plate. Bolts 8 are used to fix the structure longitudinally at the intersection of the concrete load-bearing column 9 and the floor slab 10.

[0026] At the intersection of the concrete load-bearing column and the floor slab, mark the installation position of the joint connecting steel plate according to the design dimensions, ensuring that the positional deviation is ≤3mm. A set (no fewer than 4, rectangularly distributed) of mounting holes should be made on the joint connecting steel plate. The diameter of the mounting holes should match the bolt fittings, and the hole positions should correspond to the pre-embedded bolts or reserved holes in the concrete load-bearing column and floor slab. Insert the bolt fittings (high-strength expansion bolts or pre-embedded bolts) into the mounting holes, ensuring that the joint connecting steel plate is longitudinally and tightly fitted against the surface of the concrete load-bearing column and floor slab.

[0027] Specific Implementation Method Five: Combining Figure 1 — Figure 8 This embodiment describes a reinforced concrete steel beam connection structure. The flange steel plate has holes for installing the cantilever beam. Bolt assemblies are inserted into these holes to fix the flange steel plate and the web plate 12 of the cantilever beam 11 into a single unit.

[0028] Based on the thickness of the cantilever beam web and the bolt specifications, corresponding holes (no fewer than two holes, distributed along the length of the flange steel plate) are drilled in the flange steel plate, with the hole diameter 1mm larger than the bolt assembly diameter. The web of the cantilever beam is then placed against one side of the flange steel plate, and the position of the cantilever beam is adjusted so that the pre-drilled holes on the web perfectly align with the holes on the flange steel plate. The bolt assembly is then inserted into the aligning holes, ensuring a tight connection between the flange steel plate and the cantilever beam web without relative displacement.

[0029] Specific Implementation Method Six: Combination Figure 1 — Figure 8 This embodiment describes a reinforced concrete-steel beam connection structure, wherein the shear-resistant connection plate is an isosceles trapezoidal structure, and the shear-resistant connection plate is fixedly connected to the node connection steel plate with an inclined surface.

[0030] The shear-resistant connecting plate is an isosceles trapezoid with the upper base length matching the flange steel plate width and the lower base length being 10-20mm longer than the upper base. Its height is matched with the height of the node connecting steel plate. The steel plate thickness is not less than the flange steel plate thickness to ensure shear strength.

[0031] The beveled side of the connecting plate is fixed to the node connecting steel plate by bevel welding, and the other side is fully welded to the top and bottom edges of the flange steel plate.

[0032] Specific implementation method seven: Combining Figure 1 — Figure 8This embodiment describes a reinforced concrete-steel beam connection structure in which the distance between two shear-resistant connecting plates is the same as the distance between the top and bottom plates of the cantilever beam. The two shear-resistant connecting plates are fixedly connected to the top plate 13 and bottom plate 14 of the cantilever beam by welding.

[0033] When processing the shear-resistant connecting plates, ensure that the vertical distance between the two connecting plates at the top and bottom of the flange steel plate is exactly the same as the distance between the top and bottom plates of the cantilever beam, achieving a precise fit. The top plate of the cantilever beam is fully welded to the shear-resistant connecting plate at the top of the flange steel plate, and the bottom plate of the cantilever beam is also fully welded to the shear-resistant connecting plate at the bottom of the flange steel plate. A segmented welding process is used during welding to avoid localized overheating that could cause deformation of the steel plate.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the technical solution of this application, based on the technical essence of this application and within the spirit and principles of this application, shall still fall within the protection scope of the technical solution of this application.

Claims

1. A reinforced concrete-steel beam connection structure, characterized in that, This includes node connection steel plates, flange steel plates, shear-resistant connection plates, reinforced edge banding frames, and edge banding plates; The node connecting steel plate is vertically and fixedly connected to the flange steel plate at the middle position. Two shear-resistant connecting plates are symmetrically connected to the top and bottom of the flange steel plate. Edge-binding plates are connected to the four right-angle positions of the node connecting steel plate. The edge-binding plates are vertically connected to the node connecting steel plate. The node connecting steel plate, flange steel plate, shear-resistant connecting plates and edge-binding plates constitute a concrete steel beam node installation structure. The edge-sealing plate and the concrete steel beam node installation structure are detachably connected, and the edge-sealing plate is fixedly connected to the edge-sealing plate of the concrete steel beam node installation structure through a reinforcing bolt assembly.

2. The reinforced concrete-steel beam connection structure according to claim 1, characterized in that, The reinforcing edge frame has a U-shaped structure and is mainly composed of two longitudinal angle steels and one transverse angle steel, which are welded together end to end to form a whole.

3. The reinforced concrete-steel beam connection structure according to claim 2, characterized in that, The steel plates of the two longitudinal angle steels on the reinforced edge banding frame are provided with reinforcing bolt holes A, and the reinforcing bolt holes A and B on the edge banding plate are aligned. The reinforcing bolt assembly passes through the reinforcing bolt holes A and B respectively to fix the reinforced edge banding frame and the edge banding plate.

4. The reinforced concrete-steel beam connection structure according to claim 1, characterized in that, The node connecting steel plate has a set of mounting holes, and bolts are used to fix it longitudinally at the intersection of the concrete load-bearing column and the floor slab.

5. The reinforced concrete-steel beam connection structure according to claim 1, characterized in that, The flange steel plate has holes for installing the cantilever beam. Bolt assemblies are inserted into these holes to fix the flange steel plate and the web of the cantilever beam together.

6. The reinforced concrete-steel beam connection structure according to claim 1, characterized in that, The shear-resistant connecting plate is an isosceles trapezoidal structure, and the shear-resistant connecting plate is fixedly connected to the node connecting steel plate with an inclined surface.

7. The reinforced concrete-steel beam connection structure according to claim 6, characterized in that, The distance between the two shear-resistant connecting plates is the same as the distance between the top and bottom plates of the cantilever beam. The two shear-resistant connecting plates are fixedly connected to the top and bottom plates of the cantilever beam by welding.

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