A connecting structure between a concrete-filled steel tube column and a steel reinforced concrete beam

Abstract

The present invention relates to the technical field of construction engineering, and particularly relates to a connecting structure between a concrete-filled steel tubular column and a steel reinforced concrete beam. The connecting structure between the concrete-filled steel tubular column and the steel reinforced concrete beam is used to connect the concrete-filled steel tubular column and the I-shaped steel beam. The I-shaped steel beam has a web plate and two flange plates. One end of the I-shaped steel beam facing the concrete column cuts off part of the flange plate to be divided into a T-shaped part and an I-shaped part; the connecting structure between the concrete-filled steel tubular column and the steel reinforced concrete beam includes a plurality of steel corbels. The plurality of steel corbels together form an annular structure. The annular structure is fixedly sleeved on the concrete-filled steel tubular column, and adjacent steel corbels are connected by fasteners; the steel corbel is composed of an arc-shaped base part and two support parts, and the two support parts are arranged at intervals. During installation, the web plate of the T-shaped part is clamped by the two support parts to realize automatic positioning of the I-shaped steel beam, thereby improving the construction efficiency. At the same time, the middle plate is omitted, which is beneficial to reducing the use cost and simplifying the installation steps.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly to a connecting structure between a concrete-filled steel tube column and a steel reinforced concrete beam. Background Art

[0002] With the rapid development of the construction industry, high-rise buildings and large-span buildings have emerged continuously, putting forward higher requirements for aspects such as the bearing capacity, seismic performance, and space utilization efficiency of structures; the composite structure system of concrete-filled steel tube columns and steel reinforced concrete beams has been widely used in modern construction projects due to its good mechanical properties and comprehensive benefits.

[0003] However, the connection node between the concrete-filled steel tube column and the steel reinforced concrete beam has always been a key technical problem in this structural system; in terms of the structural form, the traditional connection node is usually relatively complex, requiring a large number of connecting pieces and welding processes, which not only increases the construction difficulty and workload, prolongs the construction period, but also, due to the large amount of on-site welding work, is easily affected by the construction environment and the technical level of workers, resulting in difficult-to-guarantee welding quality.

[0004] To improve the reliability of the connection node between the steel reinforced concrete beam and the concrete-filled steel tube column, in related technologies, for example, Chinese Patent CN207348215U discloses a rigid connection node between a steel reinforced concrete beam and a concrete-filled steel tube column. This rigid connection node between the steel reinforced concrete beam and the concrete-filled steel tube column includes a steel reinforced concrete beam, a concrete-filled steel tube column, and an annular steel bracket. The steel reinforced concrete beam and the concrete-filled steel tube column are connected through the annular steel bracket. The annular steel bracket includes a flange ring plate, a flange plate, and a vertically variable cross-section web. The flange ring plate is welded on the outer periphery of the concrete-filled steel tube column, and one end of the flange plate is welded to the flange ring plate, so that the steel section and longitudinal bars in the steel reinforced concrete beam are more reliably rigidly connected to the concrete-filled steel tube column; through the annular steel bracket, the moment and shear force of the steel reinforced concrete beam and the concrete-filled steel tube column can be conveniently transmitted, ensuring the reliability of the connection.

[0005] Although the above-mentioned rigid connection node between the steel reinforced concrete beam and the concrete-filled steel tube column can improve the reliability of the connection between the steel reinforced concrete beam and the concrete-filled steel tube column, it is found in actual use that to ensure the connection strength, it is necessary to manually align the welding points of the flange plate and the welding points of the steel section in the beam, and due to the high-altitude operation, the operation difficulty is large, resulting in low construction efficiency. Summary of the Invention

[0006] Based on this, in view of the problem of low construction efficiency existing in the current connection node between the concrete-filled steel tube column and the steel reinforced concrete beam during use, it is necessary to provide a connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam.

[0007] The above object is achieved by the following technical solutions:

[0008] A connecting structure between a concrete-filled steel tube column and a steel reinforced concrete beam. The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam is used to connect a concrete-filled steel tube column and at least one I-shaped steel beam. The I-shaped steel beam has a web plate and two flange plates. One end of the I-shaped steel beam facing the concrete column cuts off part of the flange plates to be divided into a T-shaped part and an I-shaped part. The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam includes a plurality of steel corbels. The plurality of steel corbels together form an annular structure. The annular structure is fixedly sleeved on the concrete-filled steel tube column, and adjacent steel corbels are connected by fasteners. The steel corbel is composed of an arc-shaped base part and two supporting parts. The two supporting parts are arranged at intervals. During installation, the web plate of the T-shaped part is clamped between the two supporting parts and is fixedly connected to the two supporting parts at the same time. The flange plates of the T-shaped part are fixedly connected to the two supporting parts at the same time.

[0009] Furthermore, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a plurality of support plates. The support plates are fixedly arranged on the supporting parts and form a stop fit with the I-shaped part at the same time.

[0010] Furthermore, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a first elastic gasket. The first elastic gasket is inserted between the support plate and the supporting part.

[0011] Furthermore, the support plate is arranged in an L-shaped structure, and a first support rib is arranged at the turning of the support plate.

[0012] Furthermore, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a fixing plate. The fixing plate is arranged on the I-shaped part and is vertically connected to the flange plate and the web plate at the same time.

[0013] Furthermore, a second support rib is connected between the fixing plate and the flange plate.

[0014] Furthermore, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a second elastic gasket. The second elastic gasket is inserted between the flange plate of the T-shaped part and the supporting part.

[0015] Furthermore, the fastener includes a bolt and a nut.

[0016] Furthermore, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a support ring seat. The support ring seat is fixedly sleeved on the concrete-filled steel tube column and supports the bottom of the annular structure.

[0017] Further, when there are two or more specifications of the I-beam steel girders, the connection positions of the supporting part and the T-shaped part remain unchanged.

[0018] The beneficial effects of the present invention are as follows:

[0019] During the use of the concrete-filled steel tube column and steel reinforced concrete beam connection structure involved in the present invention, first, a plurality of steel corbels are formed into an annular structure and sleeved on the concrete-filled steel tube column, and then adjacent steel corbels are connected through fasteners. Then, the web plate of the T-shaped part is clamped by two supporting parts to achieve automatic positioning of the I-beam steel girder, which helps to reduce the positioning time consumption and improve the construction efficiency. Then, the fasteners are tightened to fix the annular structure on the concrete-filled steel tube column, and then the annular structure and the concrete-filled steel tube column are welded together to strengthen the connection between the annular structure and the concrete-filled steel tube column. Then, the web plate of the T-shaped part is fixedly connected to the two supporting parts at the same time, and the flange plates of the T-shaped part are fixedly connected to the two supporting parts at the same time, which not only strengthens the connection between the steel corbel and the I-beam steel girder, but also saves the intermediate plate at the same time, thus facilitating the reduction of the use cost and the simplification of the installation steps.

[0020] Further, by providing a support plate, during the use process, when one end of the I-beam steel girder away from the concrete-filled steel tube column is stressed, the I-beam steel girder has a tendency to swing around the other end. At this time, the support plate supports the I-beam steel girder through the stop cooperation with the I-beam steel girder, which is beneficial to improving the stability of the I-beam steel girder.

[0021] Further, by providing a first elastic gasket, during the use process, when the I-beam steel girder vibrates, the I-beam steel girder can transmit the vibration to the first elastic gasket through the stop cooperation with the support plate, and the first elastic gasket is used to consume the vibration energy, so as to improve the seismic performance.

[0022] Further, when there are two or more I-beam steel girders, by setting the connection positions of the supporting part and the T-shaped part to remain unchanged, during the installation process, any steel corbel can be connected to any I-beam steel girder, so as to improve the versatility. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the concrete-filled steel tube column and steel reinforced concrete beam connection structure provided by the embodiment of the present invention when connecting the concrete-filled steel tube column and the I-beam steel girder;

[0024] Figure 2 It is a top view structure schematic diagram of the concrete-filled steel tube column and steel reinforced concrete beam connection structure provided by the embodiment of the present invention when connecting the concrete-filled steel tube column and the I-beam steel girder;

[0025] Figure 3 For Figure 2Cross-sectional view in the direction of A-A;

[0026] Figure 4 It is a front view structural schematic diagram of the connection structure between a concrete-filled steel tube column and a steel reinforced concrete beam provided by an embodiment of the present invention when connecting the concrete-filled steel tube column and the I-shaped steel beam;

[0027] Figure 5 is Figure 4 Partial enlarged structural schematic diagram at B in;

[0028] Figure 6 is Figure 4 Partial enlarged structural schematic diagram at C in;

[0029] Figure 7 It is a top view structural schematic diagram of the steel corbel of the connection structure between a concrete-filled steel tube column and a steel reinforced concrete beam provided by an embodiment of the present invention;

[0030] Figure 8 It is a three-dimensional structural schematic diagram of the steel corbel of the connection structure between a concrete-filled steel tube column and a steel reinforced concrete beam provided by an embodiment of the present invention.

[0031] Wherein:

[0032] 1. Concrete-filled steel tube column;

[0033] 2. I-shaped steel beam; 21. Web plate; 22. Flange plate;

[0034] 3. Steel corbel; 31. Base part; 32. Support part;

[0035] 4. Support plate; 41. First support rib;

[0036] 5. First elastic gasket;

[0037] 6. Fixed plate; 61. Second support rib;

[0038] 7. Second elastic gasket;

[0039] 8. Support ring seat. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The serial numbers assigned to the components in this text, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connected" and "coupled" as used herein, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] As Figures 1 to 8 shown, the connection structure between the concrete-filled steel tubular column and the steel reinforced concrete beam provided by the embodiment of the present invention is used to connect the concrete-filled steel tubular column 1 and at least one I-shaped steel beam 2. The I-shaped steel beam 2 has a web plate 21 and two flange plates 22. One end of the I-shaped steel beam 2 facing the concrete column cuts off part of the flange plate 22 to be divided into a T-shaped part and an I-shaped part; the connection structure between the concrete-filled steel tubular column and the steel reinforced concrete beam includes a plurality of steel corbels 3. The plurality of steel corbels 3 together form an annular structure. The annular structure is fixedly sleeved on the concrete-filled steel tubular column 1, and adjacent steel corbels 3 are connected by fasteners; the steel corbel 3 is composed of an arc-shaped base part 31 and two support parts 32. The two support parts 32 are arranged at intervals; during installation, the web plate 21 of the T-shaped part is clamped between the two support parts 32 and is fixedly connected to the two support parts 32 at the same time, and the flange plates 22 of the T-shaped part are fixedly connected to the two support parts 32 at the same time.

[0044] Specifically in this embodiment, as Figure 1 shown, the concrete-filled steel tubular column 1 is vertically arranged during installation; the I-shaped steel beam 2 extends horizontally during installation, and the flange plates 22 are horizontally arranged; as Figure 7 and Figure 8As shown, the steel bracket 3 is set in a "П" - shaped structure, and the supporting part 32 is set in a C - shaped strip structure. The two supporting parts 32 are symmetrically arranged on the outer arc surface of the base part 31, and the openings face away from each other.

[0045] Exemplarily, as Figure 1 shown, the number of the steel brackets 3 can be set to four so as to be able to connect four I - shaped steel beams 2 respectively.

[0046] It can be understood that the connecting surface between the bottom surface and the inner side wall of the web plate 21 of the T - shaped part can also be set as an arc surface.

[0047] During the use process, first, the four steel brackets 3 are formed into an annular structure and sleeved on the concrete - filled steel tube column 1, and then the adjacent steel brackets 3 are connected through fasteners so that the annular structure can be hung on the concrete - filled steel tube column 1 through frictional force; then drive the annular structure to rotate so that the positions of the steel brackets 3 and the I - shaped steel beams 2 correspond; then clamp the web plate 21 of the T - shaped part through the two supporting parts 32 to realize the automatic positioning of the I - shaped steel beam 2, which helps to reduce the positioning time consumption and improve the construction efficiency; then tighten the fasteners to fix the annular structure on the concrete - filled steel tube column 1, and then weld the annular structure and the concrete - filled steel tube column 1 together to strengthen the connection between the annular structure and the concrete - filled steel tube column 1; then fix and connect the web plate 21 of the T - shaped part to the side walls of the two supporting parts 32 through bolts and nuts at the same time, and fix and connect the flange plate 22 of the T - shaped part to the top plate structure of the two supporting parts 32 through bolts and nuts at the same time, so as to not only strengthen the connection between the steel bracket 3 and the I - shaped steel beam 2, but also save the intermediate plate at the same time, which is beneficial to reducing the use cost and simplifying the installation steps.

[0048] In a further embodiment, the connection structure between the concrete - filled steel tube column and the steel - reinforced concrete beam is further provided with a plurality of support plates 4. The support plates 4 are fixedly arranged on the supporting part 32 and form a stop fit with the I - shaped part at the same time.

[0049] Specifically in this embodiment, the number of the support plates 4 can be set to eight. As Figure 4 shown, when the support plates 4 are installed, they are fixedly connected to the top of the bottom plate structure of the supporting part 32 through bolts and nuts.

[0050] During the use process, when the outer end of the I - shaped steel beam 2 is stressed, the I - shaped steel beam 2 has a tendency to swing around the inner end. At this time, the support plates 4 support the I - shaped steel beam 2 through the stop fit with the I - shaped steel beam 2, which is beneficial to improving the stability of the I - shaped steel beam 2.

[0051] In a further embodiment, the connection structure between the concrete - filled steel tube column and the steel - reinforced concrete beam is further provided with a first elastic gasket 5. The first elastic gasket 5 is inserted between the support plate 4 and the supporting part 32.

[0052] Specifically in this embodiment, the first elastic gasket 5 is arranged in a plate-like structure and is installed on the top of the bottom plate structure of the support part 32.

[0053] During use, when the I-beam 2 vibrates, the I-beam 2 can transmit the vibration to the first elastic gasket 5 through the stop cooperation with the support plate 4, and utilize the first elastic gasket 5 to consume the vibration energy, thereby improving the seismic performance.

[0054] In other embodiments, the support plate 4 is arranged in an L-shaped structure, and a first support rib 41 is arranged at the turning of the support plate 4.

[0055] Specifically in this embodiment, as Figure 4 and Figure 6 shown, the support plate 4 is arranged to have a horizontal plate part and a vertical plate part, wherein the horizontal plate part is horizontally installed on the top of the bottom plate structure of the support part 32, and the vertical plate part is located at the top of the outer end of the horizontal plate part; the first support rib 41 is arranged in a block structure and is shaped like a right triangle, and the arrangement of the first support rib 41 can enhance the structural strength of the support plate 4.

[0056] In some other embodiments, the connection structure between the concrete-filled steel tube column and the steel reinforced concrete beam is further arranged to include a fixing plate 6, and the fixing plate 6 is arranged on the I-shaped part and is vertically connected to both the flange 22 and the web 21 at the same time.

[0057] Specifically in this embodiment, as Figure 4 shown, the plate surface of the fixing plate 6 is vertically arranged, and is located on the I-shaped part of the I-beam 2 and is arranged close to the T-shaped part; the arrangement of the fixing plate 6 can enhance the structural strength of the I-beam 2.

[0058] In a further embodiment, a second support rib 61 is connected between the fixing plate 6 and the flange 22.

[0059] Specifically in this embodiment, as Figure 6 shown, the second support rib 61 is arranged in a block structure and is shaped like a right triangle, and the arrangement of the second support rib 61 can enhance the structural strength of the fixing plate 6.

[0060] In some other embodiments, the connection structure between the concrete-filled steel tube column and the steel reinforced concrete beam is further arranged to include a second elastic gasket 7, and the second elastic gasket 7 is inserted between the flange 22 of the T-shaped part and the support part 32.

[0061] Specifically in this embodiment, the second elastic gasket 7 is arranged in a plate-like structure and is installed on the top of the top plate structure of the support part 32.

[0062] During use, when the I-beam 2 vibrates, the I-beam 2 can transmit the vibration to the second elastic gasket 7 and utilize the second elastic gasket 7 to consume the vibration energy, thereby improving the seismic performance.

[0063] In some other embodiments, the fastener is set to include a bolt and a nut.

[0064] In some other embodiments, the connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam is further provided with a support ring seat 8. The support ring seat 8 is fixedly sleeved on the concrete-filled steel tube column 1 and supports at the bottom of the annular structure.

[0065] Specifically in this embodiment, as Figure 3 and Figure 4 shown, the support ring seat 8 is set to be a T-shaped structure and is welded to the concrete-filled steel tube column 1 during installation to support the steel corbel 3 during use.

[0066] In some other embodiments, when there are two or more specifications of the I-beam 2, the connection position between the support part 32 and the T-shaped part remains unchanged.

[0067] Specifically in this embodiment, as Figure 1 shown, there are a total of four I-beams 2, and they are divided into two specifications. The positions of the bolt holes of the T-shaped parts of the two specifications of I-beams 2 remain unchanged, so that during the installation process, any steel corbel 3 can be connected to any I-beam 2, thereby improving the versatility.

[0068] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0069] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A connecting structure between a concrete-filled steel tube column and a steel reinforced concrete beam, characterized in that, The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam is used to connect the concrete-filled steel tube column and at least one I-shaped steel beam. The I-shaped steel beam has a web plate and two flange plates. One end of the I-shaped steel beam facing the concrete column cuts off part of the flange plates to be divided into a T-shaped part and an I-shaped part. The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam includes a plurality of steel corbels. The plurality of steel corbels together form an annular structure. The annular structure is fixedly sleeved on the concrete-filled steel tube column, and adjacent steel corbels are connected by fasteners. The steel corbel is composed of an arc-shaped base part and two supporting parts. The two supporting parts are arranged at intervals. During installation, the web plate of the T-shaped part is clamped between the two supporting parts and is fixedly connected to the two supporting parts at the same time. The flange plates of the T-shaped part are fixedly connected to the two supporting parts at the same time. The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a plurality of support plates. The support plates are fixedly arranged on the supporting parts and form a stop fit with the I-shaped part at the same time. The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a first elastic gasket. The first elastic gasket is inserted between the support plate and the supporting part. The support plate is arranged in an L-shaped structure, and a first support rib is arranged at the turning of the support plate.

2. The concrete-filled steel tubular column and steel reinforced concrete beam connection structure according to claim 1, wherein The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a fixing plate. The fixing plate is arranged on the I-shaped part and is vertically connected to the flange plate and the web plate at the same time.

3. The concrete-filled steel tube column and steel reinforced concrete beam connection structure according to claim 2, wherein A second support rib is connected between the fixing plate and the flange plate.

4. The concrete-filled steel tube column and steel reinforced concrete beam connection structure according to claim 1, characterized in that, The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a second elastic gasket. The second elastic gasket is inserted between the flange plate of the T-shaped part and the supporting part.

5. The concrete-filled steel tube column and steel reinforced concrete beam connection structure according to claim 1, characterized in that The fastener includes a bolt and a nut.

6. The concrete-filled steel tube column and steel reinforced concrete beam connection structure according to claim 1, characterized in that, The connecting structure between the concrete-filled steel tube column and the steel reinforced concrete beam further includes a support ring seat. The support ring seat is fixedly sleeved on the concrete-filled steel tube column and supports the bottom of the annular structure.

7. The concrete-filled steel tube column and steel reinforced concrete beam connection structure according to claim 1, characterized in that When there are two or more specifications of the I-shaped steel beam, the connection position between the supporting part and the T-shaped part remains unchanged.

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