A hinged joint structure between a large-span steel beam or truss support and a concrete corbel.

Abstract

This invention relates to the field of building construction technology, and in particular to a hinged joint structure for a large-span steel beam or truss support and a concrete corbel, used to fix the large-span steel beam or truss support and the concrete corbel. It includes a first embedded part and a first grout. The first embedded part is disposed on the upper surface of the concrete corbel, and the first grout is disposed above the first embedded part and connected to the lower flange of the large-span steel beam or truss support. A shear plate, shaped like an inverted "L," is also disposed on the upper surface of the first embedded part along the outer edge of the first grout, with its top end resting on the upper surface of the lower flange of the large-span steel beam or truss support. The concrete corbel and the large-span steel beam or truss support are further fixed by anchor bolts. This hinged joint structure for a large-span steel beam or truss support and a concrete corbel allows for leveling design of the support joint, facilitating construction and improving construction quality; it effectively ensures the transmission of shear force at the support; and its structural principle is clear, with simple and reasonable force transmission and high reliability.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a hinged joint structure between a large-span steel beam or truss support and a concrete corbel. Background Technology

[0002] In existing concrete buildings, large-span floors (e.g., 30 meters) typically use steel structures (steel beams or steel trusses) to bear vertical loads. Large-span steel beams or trusses are usually connected to concrete members using hinged joints. Two common design methods are used in engineering: one is the column-foot hinged connection joint shown in the steel structure atlas "Detailed Construction Drawings of Steel Structure Joints" (16SG519). The drawback of this method is that it can only withstand small shear forces through column-foot friction and is unsuitable for structures with large shear forces. The other method involves embedding parts into the concrete members and directly welding the bottom plate of the steel beam or truss support joint to the embedded part plate. The drawback of this method is that leveling cannot be achieved through grouting, making construction difficult and resulting in poorer construction quality. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a hinged joint structure for a large-span steel beam or truss support and a concrete corbel, used to fix the large-span steel beam or truss support to the concrete. The structure includes a first embedded part and a first grout. The first embedded part is disposed on the upper surface of the concrete corbel, and the first grout is disposed above the first embedded part and connected to the lower flange of the large-span steel beam or truss support. A shear plate, shaped like an inverted "L," is also provided on the upper surface of the first embedded part along the outer edge of the first grout, with its top end resting on the upper surface of the lower flange of the large-span steel beam or truss support. The concrete corbel and the large-span steel beam or truss support are further fixed by anchor bolts. Compared with the prior art, the hinged joint structure for a large-span steel beam or truss support and a concrete corbel of the present invention allows for leveling design of the support joint, facilitating construction and improving construction quality; it effectively ensures the transmission of shear force at the support; and its structural principle is clear, with simple and reasonable force transmission and high reliability.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] The present invention provides a hinged joint structure between a large-span steel beam or truss support and a concrete corbel, for fixing the large-span steel beam or truss support and the concrete, including a first embedded part and a first grout.

[0006] The first embedded part is set on the upper surface of the concrete corbel, and the first grout is set above the first embedded part and connected to the lower flange of the large-span steel beam or truss support.

[0007] In one embodiment of the present invention, a shear plate is further provided on the upper surface of the first embedded part along the outer edge of the first grouting, and the shear plate is in the shape of an inverted "L".

[0008] In one embodiment of the invention, the top of the shear plate rests on the upper surface of the lower flange of the large-span steel beam or truss support.

[0009] In one embodiment of the invention, the shear plate is welded to the lower flange of the large-span steel beam or truss support.

[0010] In one embodiment of the present invention, the shear plate is welded to the first embedded part.

[0011] In one embodiment of the present invention, an anchor bolt is provided inside the concrete corbel, the anchor bolt extending out of the top of the concrete corbel and the first grout, and extending into the support of the large-span steel beam or truss for fixation.

[0012] In one embodiment of the present invention, a second grout is provided on the top of the concrete corbel, and the side of the second grout is connected to the side of the large-span steel beam or truss support.

[0013] In one embodiment of the present invention, a second embedded part is provided inside the second grout.

[0014] In one embodiment of the present invention, the large-span steel beam or truss support and the second embedded part are connected by a stiffening plate.

[0015] In one embodiment of the present invention, the stiffening plate is disposed at the middle position of the second embedded part along the height direction of the large-span steel beam or truss support, and is perpendicular to the second embedded part.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The hinged joint structure of the support and concrete corbel of the large span steel beam or truss of the present invention can realize the leveling design of the support joint, facilitate construction and improve construction quality.

[0018] (2) The hinged joint structure of the large-span steel beam or truss support and concrete corbel of the present invention can effectively ensure the transmission of shear force of the support and ensure safety.

[0019] (3) The principle of the hinged joint structure between the large-span steel beam or truss support and the concrete corbel of the present invention is clear, the force transmission is simple and reasonable, and the reliability is high. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the hinged joint structure between a large-span steel beam or truss support and a concrete corbel according to the present invention.

[0021] Figure 2 This is a schematic cross-section (AA) of a hinged joint structure between a large-span steel beam or truss support and a concrete corbel according to the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram (BB) of a hinged joint structure between a large-span steel beam or truss support and a concrete corbel according to the present invention.

[0023] Figure 4 This is a cross-sectional (CC) schematic diagram of a hinged joint structure between a large-span steel beam or truss support and a concrete corbel according to the present invention.

[0024] The following are the labels in the diagram: 1. Steel beam; 2. First grouting; 3. First embedded part; 4. Anchor bolt; 5. Second embedded part; 6. Stiffening plate; 7. Concrete corbel; 8. Shear plate; 9. Second grouting. Detailed Implementation

[0025] The present invention provides a hinged joint structure between a large-span steel beam or truss support and a concrete corbel, for fixing the large-span steel beam or truss support and the concrete, including a first embedded part and a first grout.

[0026] The first embedded part is set on the upper surface of the concrete corbel, and the first grout is set above the first embedded part and connected to the lower flange of the large-span steel beam or truss support.

[0027] In one embodiment of the present invention, a shear plate is further provided on the upper surface of the first embedded part along the outer edge of the first grouting, and the shear plate is in the shape of an inverted "L".

[0028] In one embodiment of the invention, the top of the shear plate rests on the upper surface of the lower flange of the large-span steel beam or truss support.

[0029] In one embodiment of the invention, the shear plate is welded to the lower flange of the large-span steel beam or truss support.

[0030] In one embodiment of the present invention, the shear plate is welded to the first embedded part.

[0031] In one embodiment of the present invention, an anchor bolt is provided inside the concrete corbel, the anchor bolt extending out of the top of the concrete corbel and the first grout, and extending into the support of the large-span steel beam or truss for fixation.

[0032] In one embodiment of the present invention, a second grout is provided on the top of the concrete corbel, and the side of the second grout is connected to the side of the large-span steel beam or truss support.

[0033] In one embodiment of the present invention, a second embedded part is provided inside the second grout.

[0034] In one embodiment of the present invention, the large-span steel beam or truss support and the second embedded part are connected by a stiffening plate.

[0035] In one embodiment of the present invention, the stiffening plate is disposed at the middle position of the second embedded part along the height direction of the large-span steel beam or truss support, and is perpendicular to the second embedded part.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] Example 1

[0041] This embodiment provides a hinged joint structure between a large-span steel beam and a concrete corbel, such as... Figure 1-4As shown, the support for fixing a large-span steel beam or truss to concrete includes a first embedded part 3 and a first grout 2. The first embedded part 3 is set on the upper surface of the concrete corbel 7, and the first grout 2 is set above the first embedded part 3 and connected to the lower flange of the steel beam 1. A shear plate 8 is also provided on the upper surface of the first embedded part 3 along the outer edge of the first grout 2. The shear plate 8 is inverted "L" shape, and its top end rests on the upper surface of the lower flange of the steel beam 1 and is welded to the lower flange of the steel beam 1 and the first embedded part 3 respectively. An anchor bolt 4 is also provided inside the concrete corbel 7. The anchor bolt 4 extends out of the top of the concrete corbel 7 and the first grout 2 and extends into the steel beam 1 for fixation.

[0042] A second grout seat 9 is provided on the top of the concrete corbel 7, and the side of the second grout seat 9 is connected to the side of the steel beam 1; a second embedded part 5 is provided inside the second grout seat 9; the steel beam 1 and the second embedded part 5 are connected by a stiffening plate 6; the stiffening plate 6 is located at the middle position of the second embedded part 5 along the height direction of the steel beam 1, and is perpendicular to the second embedded part 5.

[0043] During operation, the lower flange of steel beam 1 is temporarily connected to anchor bolt 4, and then leveled by the first grout 2. After the first grout 2 reaches the design strength, the nuts of anchor bolt 4 are tightened and welded, and then the shear plate 8 is welded to the lower flange of steel beam 1 and the first embedded part 3. This facilitates the leveling construction of the support and solves the shear resistance problem of the support. The second grout 9, the second embedded part 5 and the stiffening plate 6 serve as temporary fixation.

[0044] In practical applications, in a hinged joint structure between a truss support and a concrete corbel, the steel beam 1 in this embodiment can be replaced with a truss support.

[0045] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A hinged joint structure between a large-span steel beam or truss support and a concrete corbel, used to fix the large-span steel beam or truss support and the concrete, characterized in that, It includes the first embedded part (3) and the first grout (2); The first embedded part (3) is set on the upper surface of the concrete corbel (7), and the first grout (2) is set above the first embedded part (3) and connected to the lower flange of the large-span steel beam or truss support. A shear plate (8) is also provided on the upper surface of the first embedded part (3) along the outer edge of the first grout (2), and the shear plate (8) is in the shape of an inverted "L". The top of the shear plate (8) rests on the upper surface of the lower flange of the large-span steel beam or truss support; The shear plate (8) is welded to the lower flange of the large-span steel beam or truss support; The shear plate (8) is welded to the first embedded part (3); The top of the concrete corbel (7) is provided with a second grout (9), and the side of the second grout (9) is connected to the side of the large-span steel beam or truss support. An anchor bolt (4) is provided inside the concrete corbel (7). The anchor bolt (4) extends out of the top of the concrete corbel (7) and the first grout (2), and extends into the support of the large-span steel beam or truss for fixation. The second grout (9) is provided with a second embedded part (5); The large-span steel beam or truss support and the second embedded part (5) are connected by stiffening plate (6); The stiffening plate (6) is located at the middle position of the second embedded part (5) along the height direction of the large-span steel beam or truss support, and is perpendicular to the second embedded part (5); During operation, the lower flange of the steel beam (1) is temporarily connected to the anchor bolt (4), and then leveled by the first grout (2). After the first grout (2) reaches the design strength, the nuts of the anchor bolt (4) are tightened and welded. Then the shear plate (8) is welded to the lower flange of the steel beam (1) and the first embedded part (3). This facilitates the leveling construction of the support and solves the shear resistance problem of the support. The second grout (9), the second embedded part (5) and the stiffening plate (6) play a temporary fixing role.

Images