Hinged structure of steel beam and concrete column

Abstract

The utility model discloses a steel beam and concrete column hinge structure which comprises a column body, a pre-embedded steel plate, a steel beam and two groups of anchoring components, the pre-embedded steel plate is embedded in the column body, a pre-embedded rib and a shear key are welded on the lower side of the pre-embedded steel plate, and the steel beam is fixed on the upper side of the pre-embedded steel plate through the two groups of anchoring components. And quartz sand or cast steel corner sand is sprayed on the contact surfaces among the steel beam, the embedded steel plate and the anchoring components. According to the hinged structure of the steel beam and the concrete column, the quartz sand or cast steel corner sand materials are sprayed on the contact surfaces among the steel beam, the embedded steel plate and the anchoring assemblies, so that the friction coefficient among components is remarkably increased, and the anti-sliding capacity and the overall stability of the hinged structure of the steel beam and the concrete column are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, concretely relates to a hinge structure of steel beam and concrete column. BACKGROUND

[0002] The hinge connection between the existing steel beam and the concrete column usually needs to set a preformed part preformed on the column body and a component fixed on the steel beam at the connecting joint, and then the two are connected together through bolts to realize the rotatable connection between the steel beam and the concrete.

[0003] The preformed part and the component are usually both steel materials, but due to the low friction coefficient between the material surfaces, slippage or fatigue failure easily occurs under high load or dynamic load, affecting the overall stability and safety of the structure. Therefore, a connecting technology capable of improving the friction coefficient between components, simplifying the construction process and improving the structural reliability is urgently needed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a hinge structure of steel beam and concrete column capable of improving the friction coefficient between components and improving the structural reliability with a simple process.

[0005] To solve the above technical problems, the utility model provides a hinge structure of steel beam and concrete column, which comprises:

[0006] A column body made of reinforced concrete;

[0007] A preformed steel plate, the lower side of which is welded with a preformed rib and a shear key, and the preformed rib and the shear key are embedded in the column body;

[0008] A steel beam made of I-beam, which comprises an upper flange plate, a web plate and a lower flange plate, and the lower flange plate is stacked above the preformed steel plate; and

[0009] Two groups of anchoring components, the steel beam is fixed on the upper side of the preformed steel plate through the two groups of anchoring components, the two groups of anchoring components are distributed on both sides of the web plate, each group of anchoring components comprises at least one anchoring part, the anchoring part comprises an anchor rib, a bolt and a backing plate, the anchor rib is sequentially arranged in the backing plate, the lower flange plate and the preformed steel plate from top to bottom, the lower end of the anchor rib is anchored in the column body, the bolt is screwed on the upper end of the anchor rib and is pressed on the upper side of the backing plate;

[0010] Among them, the contact surfaces between the steel beam, the preformed steel plate and each anchoring component are sprayed with quartz sand or cast steel angular sand.

[0011] Optionally, each set of anchoring components includes multiple anchor members, which are spaced apart along the length of the steel beam. The steel beam also includes stiffening ribs, with multiple stiffening ribs spaced apart along the length of the web protruding from both sides. The multiple anchor members and the multiple stiffening ribs are alternately arranged.

[0012] Optionally, the lower end of each stiffening rib is located within the projection range of the embedded steel plate in the vertical direction.

[0013] Optionally, the stiffening ribs are provided in three rows, and each set of anchoring components includes two anchor members, with each anchor member located between two adjacent stiffening ribs in the length direction.

[0014] Optionally, the shear key is a cross-shaped shear key and is welded to the lower center of the embedded steel plate.

[0015] Optionally, multiple anchor bars are provided and are arranged in an array at intervals.

[0016] Optionally, the coefficient of friction between the steel beam, the embedded steel plate, and each of the anchoring components is greater than or equal to 0.45.

[0017] Optionally, the hinged structure of the steel beam and the concrete column is characterized in that the diameter of the anchor bar is d, and the length of the anchor bar embedded in the column is greater than or equal to 25d.

[0018] Optionally, multiple columns are provided, and the hinged structure between the steel beam and the concrete column also includes a main beam. The main beam is made of reinforced concrete and spans between every two columns. The ends of each main beam are integrally cast with the column.

[0019] The main beam includes a side beam, and two sets of anchoring components are provided at the upper end of the column, which is integrally cast with the side beam. Each anchoring component is staggered from the side beam in the vertical direction.

[0020] Optionally, the main beam further includes a middle beam, the main reinforcement of which passes through the column and is located directly below the embedded steel plate, and the embedded steel plate has through holes in the vertical direction.

[0021] The technical solution provided by this utility model has the following advantages:

[0022] The steel beam-concrete column hinged structure provided by this utility model includes a column, a pre-embedded steel plate, a steel beam, and two sets of anchoring components. The pre-embedded steel plate is embedded in the column and connected to the steel beam through the anchoring components. In the embodiments provided by this utility model, by spraying quartz sand or cast steel angular sand material onto the contact surfaces between the steel beam, the pre-embedded steel plate, and each anchoring component, the friction coefficient between the components is significantly increased, thereby effectively improving the anti-slip capability and overall stability of the steel beam-concrete column hinged structure. Specifically, by utilizing the high hardness and angular characteristics of quartz sand or cast steel angular sand particles, a micro-uneven structure is formed on the contact surface, increasing surface roughness and friction. This improvement not only enhances the shear resistance and load-bearing capacity of the structure, ensuring stability under high loads and dynamic loads, but also simplifies the construction process and reduces construction difficulty and cost. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 An assembly diagram of an embodiment of the longitudinal support system provided by this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the hinged structure between the steel beam and the concrete column, and a cross-section of the steel beam.

[0026] Figure 3 for Figure 2 Front view of one embodiment of the tie rod;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 for Figure 2 A front view of another embodiment of the tie rod;

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 for Figure 5 Enlarged view of point C in the middle;

[0031] Figure 8 for Figure 2 A front view of another embodiment of the tie rod.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100-Column; 200-Main beam; 201-Side beam; 202-Middle beam; 10-Embedded steel plate; 11-Embedded reinforcement; 12-Shear key; 13-Through hole; 20-Steel beam; 21-Upper flange; 22-Web plate; 23-Lower flange; 24-Stiffening rib; 30-Anchoring assembly; 31-Anchor connector; 311-Anchor bar; 312-Bolt; 313-Pad. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0036] Please see Figures 1 to 8 This utility model provides a hinged structure for a steel beam 20 and a concrete column, including a column 100, an embedded steel plate 10, a steel beam 20, and two sets of anchoring components 30. The column 100 is made of reinforced concrete, generally cast-in-place reinforced concrete. This structure can be applied to mixed load-bearing structures of concrete and steel. The embedded steel plate 10 has embedded reinforcing bars 11 and shear keys 12 welded to its lower side. These reinforcing bars 11 and shear keys 12 are embedded in the column 100, providing sufficient and reliable connection strength and shear resistance for the embedded components. The steel beam 20 is an I-beam, including an upper flange 21, a web 22, and a lower flange 23, with the lower flange 23 stacked above the embedded steel plate 10. Two sets of anchoring components 30 are fixed to the upper side of the embedded steel plate 10 and distributed on both sides of the web 22. Each set of anchoring components 30 includes at least one anchor member 31, which includes an anchor bar 311, a bolt 312, and a pad 313. The anchor bar 311 is sequentially inserted from top to bottom through the pad 313, the lower flange 23, and the embedded steel plate 10. The lower end of the anchor bar 311 is anchored in the column 100, and the bolt 312 is screwed to the upper end of the anchor bar 311 and pressed against the upper side of the pad 313. In this way, the bolt 312 is used for anchoring to achieve a hinged connection between the steel beam 20 and the column 100. The pad 313 disperses stress and prevents the embedded steel plate 10 from being crushed by local pressure.

[0037] In this embodiment, the contact surfaces between the steel beam 20, the embedded steel plate 10, and each anchoring component 30 are all sprayed with quartz sand or cast steel angular sand. Thus, by spraying the contact surfaces with quartz sand or cast steel angular sand with a high coefficient of friction, the frictional force of the contact surfaces is significantly improved, enhancing the anti-slip capability and overall stability of the connection structure, thereby improving the reliability of the structure. Preferably, the coefficient of friction between the steel beam 20, the embedded steel plate 10, and each anchoring component 30 is greater than or equal to 0.45.

[0038] In this embodiment, the high hardness and angularity of quartz sand or cast steel angular sand particles are utilized to form a micro-uneven structure on the contact surface, increasing surface roughness and friction. This improvement not only enhances the shear resistance and load-bearing capacity of the structure, ensuring stability under high and dynamic loads, but also simplifies the construction process and reduces construction difficulty and cost.

[0039] Based on the previous embodiment, in the hinged structure between the steel beam 20 and the concrete column, each set of anchoring components 30 includes multiple anchor members 31, which are spaced apart along the length of the steel beam 20. The steel beam 20 also includes stiffening ribs 24, with multiple stiffening ribs 24 protruding from both sides of the web 22 and spaced apart along the length. The anchor members 31 and stiffening ribs 24 are alternately arranged. In this embodiment, the stiffening ribs 24 enhance the rigidity and bending resistance of the steel beam 20, and by increasing the number of anchor members 31 and stiffening ribs 24, the reliability of the connection structure is further improved. The alternating arrangement of anchor members 31 and stiffening ribs 24 not only enhances the stability and durability of the connection structure but also makes the stress distribution more uniform.

[0040] Furthermore, the lower ends of each stiffening rib 24 are located within the projection range of the embedded steel plate 10 in the vertical direction. This design ensures that the stiffening ribs 24 form an effective support structure above the embedded steel plate 10, locally strengthening the steel beam 20 at the hinge, further enhancing the bending resistance of the steel beam 20 at the connection, and preventing excessive local stress on the steel beam 20, which could lead to flexural deformation.

[0041] Specifically, each stiffening rib 24 is provided with three layers, and each set of anchoring components 30 includes two anchors 31, with each anchor 31 located between two adjacent stiffening ribs 24 in the length direction. In this way, the reasonable arrangement of the anchors 31 and stiffening ribs 24 is ensured, improving the uniformity of stress and the overall stability of the steel beam 20.

[0042] The specific structure of the shear key 12 can be designed according to actual needs. In this embodiment, the shear key 12 is a cross-shaped shear key 12, which is welded to the lower center of the embedded steel plate 10. The design of the cross-shaped shear key 12 improves the shear resistance and connection strength of the shear key 12, and enhances the firmness and reliability between the embedded steel plate 10 and the column 100.

[0043] Based on the above embodiment, multiple anchor bars 311 are provided and distributed in an array at intervals. By providing multiple anchor bars 311 and adopting an array distribution, the anchoring effect is enhanced, and the pull-out resistance and overall stability of the connection structure are improved.

[0044] Furthermore, the diameter of the anchor bar 311 is d, and the length of the anchor bar 311 embedded in the column 100 is greater than or equal to 25d. By ensuring the embedment length of the anchor bar 311, the anchoring effect of the anchor bar 311 is ensured, and the pull-out resistance and overall stability of the connection structure are enhanced.

[0045] Based on the above embodiment, multiple columns 100 are provided, and the hinged structure between the steel beam 20 and the concrete column also includes a main beam 200. The main beam 200 is made of reinforced concrete and spans between every two columns 100. The ends of each main beam 200 are integrally cast with the column 100. The main beam 200 includes a side beam 201. Two sets of anchoring components 30 are provided at the upper end of the side beam 201, which is integrally cast with the column 100. Each anchoring component 30 is staggered from the side beam 201 in the vertical direction. Through this design, a reliable connection is achieved between the steel beam 20 and multiple columns 100. At the same time, the side beam 201 is staggered from the anchoring components 30 to avoid the anchor bars 311 being inserted into the gaps of the main reinforcement of the side beam 201, which would result in excessive reinforcement and affect the compactness of the concrete pouring.

[0046] In one embodiment, the main beam 200 also includes a middle beam 202. The main reinforcement of the middle beam 202 passes through the column 100 and is located directly below the embedded steel plate 10. The embedded steel plate 10 has through holes 13 extending vertically. In this embodiment, the anchor bars 311 of the anchor connector 31 are inserted downward into the range of the main beam 200. The anchor bars 311 and the reinforcement of the main beam 200 are intertwined, resulting in a small gap between them. Therefore, in this utility model, the through holes 13 provided in the embedded steel plate 10 prevent negative pressure from appearing between the anchor bars 311 and the main beam 200, ensuring the compactness of the concrete pouring. At the same time, the through holes 13 also allow tools to be inserted for vibration during the concrete pouring process.

[0047] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the protection scope of this utility model.

Claims

1. A hinged structure connecting a steel beam and a concrete column, characterized in that, include: The column is made of reinforced concrete; An embedded steel plate is provided, with embedded reinforcing bars and shear keys welded to its lower side. The embedded reinforcing bars and shear keys are embedded in the column. A steel beam, wherein the steel beam is an I-beam and includes an upper flange, a web, and a lower flange, the lower flange being stacked on top of the embedded steel plate; and, Two sets of anchoring components are provided. The steel beam is fixed to the upper side of the embedded steel plate by the two sets of anchoring components. The two sets of anchoring components are distributed on both sides of the web. Each set of anchoring components includes at least one anchor member. The anchor member includes an anchor bar, a bolt, and a pad. The anchor bar passes through the pad, the lower flange, and the embedded steel plate from top to bottom. The lower end of the anchor bar is anchored in the column. The bolt is screwed to the upper end of the anchor bar and pressed against the upper side of the pad. The contact surfaces of the steel beam, the embedded steel plate, and each of the anchoring components are all sprayed with quartz sand or cast steel angular sand.

2. The hinged structure of steel beam and concrete column as described in claim 1, characterized in that, Each of the anchoring components includes multiple anchor members, which are spaced apart along the length of the steel beam. The steel beam also includes stiffening ribs, with multiple stiffening ribs spaced apart along the length of the web on both sides. The multiple anchor members and the multiple stiffening ribs are arranged alternately.

3. The hinged structure of steel beam and concrete column as described in claim 2, characterized in that, The lower ends of each stiffening rib are located within the projection range of the embedded steel plate in the vertical direction.

4. The hinged structure of steel beam and concrete column as described in claim 3, characterized in that, The stiffening ribs are provided in three rows, and each set of anchoring components includes two anchor members, with each anchor member located between two adjacent stiffening ribs in the length direction.

5. The hinged steel beam and concrete column structure as described in any one of claims 1 to 4, characterized in that, The shear key is a cross-shaped shear key and is welded to the center of the lower side of the embedded steel plate.

6. The hinged steel beam and concrete column structure as described in any one of claims 1 to 4, characterized in that, The anchor bars are provided in multiples and are arranged in an array with intervals.

7. The hinged steel beam and concrete column structure as described in any one of claims 1 to 4, characterized in that, The coefficient of friction between the steel beam, the embedded steel plate, and each of the anchoring components is greater than or equal to 0.

45.

8. The hinged steel beam and concrete column structure as described in any one of claims 1 to 4, characterized in that, The diameter of the anchor bar is d, and the length of the anchor bar embedded in the column is greater than or equal to 25d.

9. The hinged structure of steel beam and concrete column as described in any one of claims 1 to 4, characterized in that, The column is provided in multiple ways. The steel beam and concrete column hinge structure also includes a main beam. The main beam is made of reinforced concrete and spans between every two columns. The ends of each main beam are integrally cast with the column. The main beam includes a side beam, and two sets of anchoring components are provided at the upper end of the column, which is integrally cast with the side beam. Each anchoring component is staggered from the side beam in the vertical direction.

10. The hinged structure of steel beam and concrete column as described in claim 9, characterized in that, The main beam also includes a middle beam, the main reinforcement of which passes through the column and is located directly below the embedded steel plate, and the embedded steel plate has through holes in the vertical direction.

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