Connecting device and building structure

Abstract

The utility model provides a connecting device and a building structure, and relates to the technical field of prestressed concrete structures, and the connecting device comprises a buried plate, an anchoring steel bar, a connecting frame and a cover plate. And the first surface of the embedded plate is adhered to the surface of the concrete structure. The first side of the connecting frame is welded with the second surface of the embedded plate, and the second side of the connecting frame is welded with the first surface of the cover plate; the second face of the cover plate is used for welding a steel structure. A cavity is defined by the embedded plate, the connecting frame and the cover plate, and the cavity is used for containing a pre-stressed anchorage device; the pre-stressed anchorage device is used for being connected with the embedded plate and fixedly connected with the pre-stressed steel bar embedded in the concrete structure. When the connecting device is adopted, the conflict of the connecting part of the prestressed anchorage device and the steel structure can be avoided, so that the steel structure and the concrete structure are connected more simply, and the construction difficulty during the connection of the concrete structure and the steel structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed concrete structures, in particular to a connecting device and a building structure. Background Art

[0002] In long-span structures, steel and concrete structures are often connected. Specifically, the steel supports of the steel structure are typically connected to the underlying concrete columns. During construction, a pre-embedded plate is first placed atop the concrete column, and then the base plate of the steel supports is welded to this plate. However, in some long-span structures, the steel supports can transmit significant shear forces, axial forces, or bending moments to the concrete columns, potentially causing cracking or even damage.

[0003] In the prior art, in order to improve the crack resistance of concrete columns, prestressed tendons are tensioned along the axis of the concrete columns. However, during prestressing construction, prestressed anchors need to be installed on the top of the concrete columns.

[0004] In this way, the prestressed anchor on the top of the concrete column and the bottom plate of the steel support will conflict, which will make the construction of the connection between the concrete column and the steel support difficult. Utility Model Content

[0005] In view of this, the present invention provides a connecting device and a building structure. When the connecting device is used to connect a steel structure and a concrete structure provided with a prestressed anchor, it can avoid conflict between the connection parts of the prestressed anchor and the steel structure, thereby making the connection between the steel structure and the concrete structure simpler and reducing the construction difficulty of the process.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] In a first aspect, the present invention discloses a connection device comprising: an embedded plate, anchoring bars, a connection frame, and a cover plate. The first surface of the embedded plate is bonded to the surface of a concrete structure; the first end of the anchoring bar is welded to the first surface of the embedded plate, and the second end of the anchoring bar is embedded within the concrete structure.

[0008] The first side of the connecting frame is welded to the second side of the embedded plate, and the second side of the connecting frame is welded to the first side of the cover plate; the second side of the cover plate is used for welding the steel structure; the first and second sides of the embedded plate are arranged opposite to each other, the first and second sides of the connecting frame are arranged opposite to each other, and the first and second sides of the cover plate are arranged opposite to each other.

[0009] The embedded plate, the connecting frame and the cover plate enclose a cavity, and the cavity is used to accommodate a prestressed anchor; the prestressed anchor is used to be connected to the embedded plate and fixedly connected to the prestressed steel bars embedded in the concrete structure.

[0010] Optionally, the cover plate is parallel to the plate surface of the embedded plate, and the axis of the connecting frame is perpendicular to the plate surfaces of the embedded plate and the cover plate.

[0011] Optionally, the connecting frame is a square ring frame, and the square ring frame includes four connecting plates, and the four connecting plates are welded end to end to form the square ring frame.

[0012] Optionally, the connecting device also includes a stiffening plate, the first side and the second side of the stiffening plate are welded to the inner wall of the square annular frame, the third side of the stiffening plate is welded to the buried plate, the fourth side of the stiffening plate is welded to the cover plate, and the third side and the fourth side of the stiffening plate are arranged opposite to each other.

[0013] Optionally, there are two stiffening plates, and the surfaces of the two stiffening plates are perpendicular to each other.

[0014] Optionally, the connection device further includes a shear key, which is embedded in the concrete structure, and one end of the shear key is welded to the first surface of the embedded plate.

[0015] Optionally, the shear key is an I-beam segment, and the axis of the I-beam segment is perpendicular to the plate surface of the embedded plate.

[0016] Optionally, the number of the shear keys is four, and two shear keys are provided at the weld position between each stiffening plate and the embedded plate.

[0017] In a second aspect, the utility model discloses a building structure, which includes the connection device described in any one of the first aspects, the steel structure and the concrete structure, and the steel structure and the concrete structure are connected by the connection device.

[0018] Optionally, the building structure further includes a plurality of prestressed steel bars and a plurality of prestressed anchors, and the concrete structure is a concrete column; along the axial direction of the concrete column, the prestressed steel bars are passed through the concrete column and the embedded plate, and the prestressed steel bars extend into the cavity and are fixedly connected to the prestressed anchors.

[0019] Compared with the related art, the beneficial effects of this application are at least:

[0020] Because the first surface of the embedded plate is bonded to the surface of the concrete structure, the embedded plate is fixedly connected to the concrete structure, that is, the embedded plate cannot move relative to the concrete structure, thereby further strengthening the connection between the connecting device and the concrete structure. Subsequently, because the first end of the anchoring steel bar is welded to the first surface of the embedded plate, the second end of the anchoring steel bar is embedded within the concrete structure, that is, the entire anchoring steel bar is anchored within the concrete structure. In this way, the anchoring steel bar acts as an anchor for the embedded plate, preventing the embedded plate from separating from the surface of the concrete structure, thereby further strengthening the connection between the embedded plate and the concrete structure, and further strengthening the connection between the entire connecting device and the concrete structure.

[0021] Next, since the first side of the connecting frame is welded to the second side of the embedded plate, and the second side of the connecting frame is welded to the first side of the cover plate, the embedded plate, the connecting frame, and the cover plate enclose a cavity, which is used to accommodate the prestressed anchor; the second side of the cover plate is used to weld the steel structure. In this way, the prestressed anchor can be accommodated inside the cavity, and the steel structure can be welded to the second side of the cover plate. This can avoid conflicts between the connection parts of the prestressed anchor and the steel structure, and the connection parts of the prestressed anchor and the steel structure can be reliably connected to the connection device at the same time. Therefore, on the basis of ensuring the reliable connection between the steel structure and the concrete, it is possible to make the connection between the steel structure and the concrete structure simpler, reducing the construction difficulty of this process.

[0022] Next, the prestressed anchor is used to connect to the embedded plate and is fixedly connected to the prestressed steel bars embedded in the concrete structure. Specifically, the prestressed anchor is fixedly connected to the end of the prestressed steel bar extending into the cavity, and the prestressed anchor is in contact with the embedded plate, that is, the embedded plate can serve as a pad for the prestressed anchor. This prevents the end of the prestressed steel bar extending into the cavity from being displaced relative to the embedded plate, and thus the prestressed steel bar will not shrink along its own axis. This can increase the compressive stress inside the concrete structure, thereby improving the crack resistance of the concrete structure.

[0023] To sum up, when this connecting device is used to connect a steel structure and a concrete structure provided with a prestressed anchor, it can ensure that the crack resistance of the concrete structure is enhanced while avoiding conflict between the connection parts of the prestressed anchor and the steel structure, thereby making the connection between the steel structure and the concrete structure simpler and reducing the construction difficulty of this process.

[0024] The building structure of the present invention has the same or similar advantages as the prior art and the aforementioned connection device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a structural diagram of a connecting device provided by an embodiment of the present utility model;

[0027] Figure 2 yes Figure 1 A cross-sectional view of the connecting device along DD;

[0028] Figure 3 yes Figure 1 Schematic diagram of the structure when the embedded plate is viewed from the bottom up.

[0029] Description of reference numerals:

[0030] 1-connecting device, 11-embedded plate, 12-anchor steel bar, 13-connecting frame, 131-connecting plate, 14-cover plate, 15-cavity, 16-stiffening plate, 17-shear key, 2-concrete structure, 3-steel structure, 4-prestressed anchor, 5-prestressed steel bar. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The terms "first," "second," and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0033] It should be understood that references throughout this specification to "some embodiments" mean that a particular feature, structure, or characteristic associated with an embodiment is included in at least one embodiment of the present invention. Therefore, the appearance of "in some embodiments" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0034] The following describes in detail a connection device and a building structure provided by the present invention by listing specific embodiments.

[0035] Figure 1 This is a structural diagram of a connecting device 1 provided in an embodiment of the present utility model. Figure 2 yes Figure 1 The cross-sectional view of the connecting device 1 along DD, Figure 3 yes Figure 1 A schematic structural diagram of the embedded plate 11 when viewed from bottom to top.

[0036] See also Figure 1 、 Figure 2 and Figure 3 The connection device 1 includes an embedded plate 11, anchoring bars 12, a connection frame 13, and a cover plate 14. The first surface of the embedded plate 11 is bonded to the surface of the concrete structure 2; the first end of the anchoring bar 12 is welded to the first surface of the embedded plate 11, and the second end of the anchoring bar 12 is embedded in the interior of the concrete structure 2.

[0037] The first side of the connecting frame 13 is welded to the second side of the embedded plate 11, and the second side of the connecting frame 13 is welded to the first side of the cover plate 14; the second side of the cover plate 14 is used for welding the steel structure 3; the first side and the second side of the embedded plate 11 are arranged opposite to each other, the first side and the second side of the connecting frame 13 are arranged opposite to each other, and the first side and the second side of the cover plate 14 are arranged opposite to each other.

[0038] The embedded plate 11, the connecting frame 13 and the cover plate 14 enclose a cavity 15 for accommodating the prestressed anchor 4; the prestressed anchor 4 is used to connect to the embedded plate 11 and to be fixedly connected to the prestressed steel bar 5 embedded in the concrete structure 2.

[0039] In the embodiment of the present invention, since the first surface of the embedded plate 11 is bonded to the surface of the concrete structure 2, the embedded plate 11 is fixedly connected to the concrete structure 2, that is, the embedded plate 11 cannot move relative to the concrete structure 2, thereby making the connection between the connecting device 1 and the concrete structure 2 more firmly. Then, since the first end of the anchoring steel bar 12 is welded to the first surface of the embedded plate 11, the second end of the anchoring steel bar 12 is buried inside the concrete structure 2, that is, the anchoring steel bar 12 is anchored inside the concrete structure 2 as a whole. In this way, the anchoring steel bar 12 acts as an anchor for the embedded plate 11, so that the embedded plate 11 will not separate from the surface of the concrete structure 2, thereby making the embedded plate 11 more firmly connected to the concrete structure 2, and further making the connection between the connecting device 1 and the concrete structure 2 as a whole more firmly.

[0040] Then, since the first side of the connecting frame 13 is welded to the second side of the embedded plate 11, the second side of the connecting frame 13 is welded to the first side of the cover plate 14; the embedded plate 11, the connecting frame 13 and the cover plate 14 enclose a cavity 15, and the cavity 15 is used to accommodate the prestressed anchor 4; the second side of the cover plate 14 is used to weld the steel structure 3. In this way, the prestressed anchor 4 can be accommodated inside the cavity 15, and the steel structure 3 can be welded to the second side of the cover plate 14. This can avoid conflicts between the connection parts of the prestressed anchor 4 and the steel structure 3, so that the connection parts of the prestressed anchor 4 and the steel structure 3 are reliably connected to the connecting device 1 at the same time. Therefore, on the basis of ensuring the reliable connection between the steel structure 3 and the concrete, it is possible to make the connection between the steel structure 3 and the concrete structure 2 simpler, reducing the construction difficulty of this process.

[0041] Next, the prestressed anchor 4 is used to connect with the embedded plate 11 and is fixedly connected to the prestressed steel bar 5 embedded in the concrete structure 2. Specifically, the prestressed anchor 4 is fixedly connected to the end of the prestressed steel bar 5 extending into the cavity 15, and the prestressed anchor 4 is in contact with the embedded plate 11, that is, the embedded plate 11 can serve as a pad for the prestressed anchor 4. In this way, the end of the prestressed steel bar 5 extending into the cavity 15 will not be displaced relative to the embedded plate 11, and the prestressed steel bar 5 will not shrink along its own axis. This can increase the compressive stress inside the concrete structure 2, thereby improving the crack resistance of the concrete structure 2.

[0042] To sum up, when the connecting device 1 is used to connect the steel structure 3 and the concrete structure 2 provided with the prestressed anchor 4, it can ensure the enhanced crack resistance of the concrete structure 2 while avoiding conflict between the connection parts of the prestressed anchor 4 and the steel structure 3, thereby making the connection between the steel structure 3 and the concrete structure 2 simpler and reducing the construction difficulty of this process.

[0043] It should be noted that the embedded plate 11, anchoring steel bars 12, connecting frame 13 and cover plate 14 are all made of steel.

[0044] It should also be noted that the concrete structure 2 can be a concrete column, concrete beam, or concrete wall, or any other concrete structure 2, and the present invention does not limit this. Correspondingly, the connecting device 1 can be provided on the top, bottom, or side of the concrete structure 2, and the present invention does not limit this.

[0045] It should also be noted that in order to enhance the anchoring performance of the above-mentioned anchoring steel bar 12, the anchoring steel bar 12 is a threaded steel bar.

[0046] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The cover plate 14 is parallel to the surface of the embedded plate 11, and the axis of the connecting frame 13 is perpendicular to the surfaces of both the embedded plate 11 and the cover plate 14. This enhances the compressive strength of the connecting device 1 along the axis of the connecting frame 13. When the connecting device 1 is used to connect the concrete structure 2 and the steel structure 3, the pressure applied to the connecting device 1 by the steel structure 3 is evenly distributed to the cover plate 14 and then directly transferred from the cover plate 14 to the embedded plate 11. This allows the connecting device 1 to withstand greater pressure, thereby reducing fatigue damage and extending the service life of the connecting device 1.

[0047] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The connecting frame 13 is a square ring frame, which includes four connecting plates 131. The four connecting plates 131 are welded end to end to form the square ring frame.

[0048] In this embodiment of the utility model, the connecting frame 13 is configured as a square ring frame. This allows the pressure applied by the steel structure 3 to the cover plate 14 to be evenly transferred to the embedded plate 11 along the edge of the cover plate 14, resulting in a more uniform force on the embedded plate 11. Furthermore, the effective force-bearing area of ​​the cover plate 14 is increased. This allows the connecting device 1 to withstand greater pressure, thereby further enhancing its compressive resistance. This can further reduce fatigue damage and extend the service life of the connecting device 1.

[0049] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The connecting device 1 also includes a stiffening plate 16. The first and second opposite sides of the stiffening plate 16 are welded to the inner wall of the square annular frame. The third side of the stiffening plate 16 is welded to the buried plate 11. The fourth side of the stiffening plate 16 is welded to the cover plate 14. The third and fourth sides of the stiffening plate 16 are arranged opposite to each other.

[0050] In the embodiment of the present invention, the first and second sides of the stiffening plate 16 are welded to the inner wall of the square annular frame. This can increase the compressive strength of the square annular frame in the radial direction. Then, since the third side of the stiffening plate 16 is welded to the embedded plate 11 and the fourth side of the stiffening plate 16 is welded to the cover plate 14, the third and fourth sides of the stiffening plate 16 are arranged relative to each other. In this way, the pressure received by the cover plate 14 can be directly transmitted to the embedded plate 11 through the stiffening plate 16, avoiding the deflection of the cover plate 14 due to the pressure, thereby increasing the compressive strength of the square annular frame in the axial direction. In short, the stiffening plate 16 increases the rigidity of the square annular frame as a whole, thereby enabling the connecting device 1 to withstand greater pressure, thereby increasing the scope of application of the connecting device 1.

[0051] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 There are two stiffening plates 16, and the surfaces of the two stiffening plates 16 are perpendicular to each other. Specifically, each stiffening plate 16 is perpendicular to the connecting plate 131 of the square annular frame. Thus, the two stiffening plates 16 and the square annular frame enclose four rectangular cavities 15. This increases the rigidity of the square annular frame along the surface of the stiffening plates 16, further enhancing the radial compressive strength of the square annular frame, thereby further expanding the applicability of the connecting device 1.

[0052] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The connecting device 1 also includes a shear key 17, which is buried inside the concrete structure 2, and one end of the shear key 17 is welded to the first surface of the embedded plate 11.

[0053] In this way, the pressure exerted on the embedded plate 11 can not only be transmitted to the surface of the concrete structure 2 through the first surface of the embedded plate 11, but can also be transmitted to the interior of the concrete structure 2 through the shear key 17. In this way, the interior and surface of the concrete structure 2 simultaneously bear the pressure transmitted by the steel structure 3, thereby reducing the compressive stress on the surface of the concrete structure 2, thereby reducing fatigue damage on the surface of the concrete structure 2 and extending the service life of the concrete structure 2.

[0054] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The shear key 17 is an I-beam segment, and the axis of the I-beam segment is perpendicular to the plate surface of the embedded plate 11.

[0055] The shear key 17 transmits pressure to the concrete structure through the bonding force between the shear key 17 and the concrete structure 2. Specifically, the force transmission process is as follows: the steel structure 3 sequentially transmits pressure to the cover plate 14, the connecting frame 13, the embedded plate 11, and the shear key 17. The shear key 17 then transmits pressure to the concrete structure through the bonding force between the shear key 17 and the concrete structure 2. The larger the contact area between the shear key 17 and the concrete structure 2, the greater the bonding force between the contact surfaces.

[0056] When the cross-section of the shear key 17 is the same, the cross-section of the I-beam segment has a longer circumference than the cross-section of other shapes. Therefore, for the shear key 17 of the same length, the contact surface area of ​​the I-beam segment is larger, so the bonding force is greater. In this way, the shear key 17 can transmit greater pressure, that is, the connecting device 1 can withstand greater pressure, thereby increasing the scope of application of the connecting device 1.

[0057] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The number of shear keys 17 is four, and two shear keys 17 are provided at the weld position between each stiffening plate 16 and the buried plate 11.

[0058] In an embodiment of the present invention, the two shear keys 17 located on the same weld are symmetrically distributed along the center of the embedded plate 11, so that the pressure exerted on the stiffening plate 16 can be evenly distributed to the corresponding shear keys 17, and then the pressure can be evenly distributed to the concrete structure 2, so that the force on the concrete structure 2 is more uniform, thereby reducing the compressive stress on the surface of the concrete structure 2, thereby further reducing the fatigue damage on the surface of the concrete structure, and can extend the service life of the concrete structure 2.

[0059] It should be noted that the number of the shear keys 17 may also be eight, twelve or other numbers, and the embodiment of the present invention does not limit this.

[0060] It should also be noted that the thickness and size of the above-mentioned connecting plate 131, stiffening plate 16, embedded plate 11, cover plate 14 and shear key 17 are determined according to the actual stress conditions and the dimensions of the steel structure 3 and the concrete structure 2.

[0061] The embodiment of the present utility model further discloses a building structure, which includes any one of the above-mentioned connecting devices 1 , a steel structure 3 and a concrete structure 2 , wherein the steel structure 3 and the concrete structure 2 are connected via the connecting device 1 .

[0062] Since the first surface of the embedded plate 11 is bonded to the surface of the concrete structure 2, the embedded plate 11 is fixedly connected to the concrete structure 2, that is, the embedded plate 11 cannot move relative to the concrete structure 2, and thus the connection device 1 as a whole is more firmly connected to the concrete structure 2. Then, since the first end of the anchoring steel bar 12 is welded to the first surface of the embedded plate 11, the second end of the anchoring steel bar 12 is buried inside the concrete structure 2, that is, the anchoring steel bar 12 as a whole is anchored inside the concrete structure 2. In this way, the anchoring steel bar 12 acts as an anchor for the embedded plate 11, so that the embedded plate 11 will not separate from the surface of the concrete structure 2, and thus the connection between the embedded plate 11 and the concrete structure 2 is more firmly, and thus the connection between the entire connecting device 1 and the concrete structure 2 is further made more firmly. Therefore, the steel structure 3 and the concrete structure 2 of the building structure are more firmly connected, which enhances the durability and reliability of the building structure.

[0063] Next, the first side of the connecting frame 13 is welded to the second side of the embedded plate 11, and the second side of the connecting frame 13 is welded to the first side of the cover plate 14. The embedded plate 11, connecting frame 13, and cover plate 14 enclose a cavity 15 for accommodating the prestressed anchor 4. The second side of the cover plate 14 is used to weld the steel structure 3. This allows the prestressed anchor 4 to be accommodated within the cavity 15, while the steel structure 3 can be welded to the second side of the cover plate 14. This prevents any clash between the connection points of the prestressed anchor 4 and the steel structure 3, ensuring that the connection points of the prestressed anchor 4 and the steel structure 3 are simultaneously and reliably connected to the connecting device 1. This ensures a reliable connection between the steel structure 3 and the concrete, making the connection between the steel structure 3 and the concrete 2 much simpler and reducing the construction difficulty of this process. This improves the connection efficiency between the steel structure 3 and the concrete 2 during construction of the building structure, thereby improving the overall construction efficiency of the building structure.

[0064] Next, since the prestressed anchor 4 is used to connect with the embedded plate 11, and is fixedly connected to the prestressed steel bar 5 buried inside the concrete structure 2. Specifically, the prestressed anchor 4 is fixedly connected to one end of the prestressed steel bar 5 extending into the cavity 15, and the prestressed anchor 4 is in contact with the embedded plate 11, that is, the embedded plate 11 can serve as a pad for the prestressed anchor 4. In this way, the end of the prestressed steel bar 5 extending into the cavity 15 will not be displaced relative to the embedded plate 11, and thus the prestressed steel bar 5 will not shrink along its own axis. This can increase the compressive stress inside the concrete structure 2, thereby improving the crack resistance of the concrete structure 2. This can enhance the durability of the concrete structure 2, and thus extend the service life of the building structure.

[0065] In short, the use of the connecting device 1 in the building structure not only reduces the construction difficulty and improves the construction efficiency, but also prolongs the service life of the building structure.

[0066] Alternatively, in some embodiments, see Figure 1 、 Figure 2 and Figure 3 The building structure also includes multiple prestressed steel bars 5 and multiple prestressed anchors 4. The concrete structure 2 is a concrete column. Along the axial direction of the concrete column, the prestressed steel bars 5 are passed through the concrete column and the embedded plate 11. The prestressed steel bars 5 extend into the cavity 15 and are fixedly connected to the prestressed anchor 4.

[0067] In the embodiment of the present utility model, the embedded plate 11 serves as a pad for the prestressed anchor 4, and is used to support the prestressed anchor 4. Since the prestressed steel bar 5 extends into the cavity 15 and is fixedly connected to the prestressed anchor 4. In this way, the prestressed anchor 4 is accommodated inside the cavity 15, and the steel structure 3 can be welded to the second side of the cover plate 14. This can avoid conflicts between the connection parts of the prestressed anchor 4 and the steel structure 3, so that the connection parts of the prestressed anchor 4 and the steel structure 3 are reliably connected to the connecting device 1 at the same time. Therefore, on the basis of ensuring the reliable connection between the steel structure 3 and the concrete, it is possible to make the connection between the steel structure 3 and the concrete structure 2 simpler, thereby reducing the construction difficulty of this process.

[0068] Next, since the concrete structure 2 is a concrete column, prestressed steel bars 5 are inserted through the concrete column and embedded plate 11 along the axis of the concrete column. This increases the axial compressive stress of the concrete column by tensioning the prestressed steel bars 5, thereby enhancing the concrete column's crack resistance. Furthermore, since the building structure includes multiple prestressed steel bars 5 and multiple prestressed anchors 4, greater tension is applied to the concrete column, further increasing the axial compressive stress on the concrete and further enhancing the concrete column's crack resistance.

[0069] See also Figure 1 、 Figure 2 and Figure 3, when the connection device 1 is used to connect the steel structure 3 and the concrete structure 2 provided with prestressed steel bars 5, the specific construction method is as follows: first, a plurality of through holes are opened on the embedded plate 11 using mechanical equipment; then the embedded plate 11 with through holes, the connecting frame 13 and the stiffening plate 16 are welded to form a first integral structure; then the anchor steel bar 12 is welded to the embedded plate 11 to form a second integral structure; then, when pouring the concrete structure 2, the anchor steel bar 12 of the second integral structure is inserted into the concrete to be solidified and the embedded plate 11 is fitted with the concrete structure 2; then, after the concrete structure 2 is solidified, the prestressed steel bar 5 is passed through the through holes reserved in the concrete structure 2 and the through holes of the embedded plate 11 to complete the tensioning work of the prestressed steel bar 5 and fix the prestressed anchor 4 to the end of the prestressed steel bar 5; then the cover plate 14 is welded to the second integral structure to form a third integral structure, which is the above-mentioned connection device 1; finally, the steel support bottom plate of the steel structure 3 is welded to the second surface of the cover plate 14 to complete the connection construction of the concrete structure 2 and the steel structure 3. During the construction process, the embedded plate 11 of the connecting device 1 acts as a pad for the prestressed anchor 4 .

[0070] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connecting device (1), characterized in that: include: An embedded plate (11), a first surface of the embedded plate (11) being bonded to the surface of the concrete structure (2); Anchoring steel bars (12), wherein a first end of the anchoring steel bars (12) is welded to a first surface of the embedded plate (11), and a second end of the anchoring steel bars (12) is embedded in the interior of the concrete structure (2); Connecting frame (13); A cover plate (14), wherein the first side of the connecting frame (13) is welded to the second side of the embedded plate (11), and the second side of the connecting frame (13) is welded to the first side of the cover plate (14); the second side of the cover plate (14) is used for welding the steel structure (3); the first side and the second side of the embedded plate (11) are arranged opposite to each other, the first side and the second side of the connecting frame (13) are arranged opposite to each other, and the first side and the second side of the cover plate (14) are arranged opposite to each other; The embedded plate (11), the connecting frame (13) and the cover plate (14) enclose a cavity (15), and the cavity (15) is used to accommodate a prestressed anchor (4); the prestressed anchor (4) is used to be connected to the embedded plate (11) and fixedly connected to a prestressed steel bar (5) embedded in the concrete structure (2).

2. The connection device (1) according to claim 1, characterized in that The cover plate (14) is parallel to the plate surface of the embedded plate (11), and the axis of the connecting frame (13) is perpendicular to the plate surfaces of the embedded plate (11) and the cover plate (14).

3. The connection device (1) according to claim 2, characterized in that The connecting frame (13) is a square ring frame, and the square ring frame comprises four connecting plates (131). The four connecting plates (131) are welded end to end to form the square ring frame.

4. The connection device (1) according to claim 3, characterized in that The connecting device (1) further includes a stiffening plate (16), wherein the first side and the second side opposite to each other of the stiffening plate (16) are welded to the inner wall of the square annular frame, the third side of the stiffening plate (16) is welded to the embedded plate (11), and the fourth side of the stiffening plate (16) is welded to the cover plate (14), and the third side and the fourth side of the stiffening plate (16) are arranged opposite to each other.

5. The connection device (1) according to claim 4, characterized in that There are two stiffening plates (16), and the surfaces of the two stiffening plates (16) are perpendicular to each other.

6. The connecting device (1) according to any one of claims 4-5, characterized in that: The connecting device (1) further comprises a shear key (17), wherein the shear key (17) is embedded in the interior of the concrete structure (2), and one end of the shear key (17) is welded to the first surface of the embedded plate (11).

7. The connection device (1) according to claim 6, characterized in that The shear key (17) is an I-beam segment, and the axis of the I-beam segment is perpendicular to the plate surface of the embedded plate (11).

8. The connection device (1) according to claim 6, characterized in that The number of the shear keys (17) is four, and two shear keys (17) are provided at the weld position between each stiffening plate (16) and the embedded plate (11).

9. A building structure, characterized in that It comprises the connecting device (1) according to any one of claims 1 to 8, the steel structure (3) and the concrete structure (2), wherein the steel structure (3) and the concrete structure (2) are connected via the connecting device (1).

10. The building structure according to claim 9, characterized in that The building structure further comprises a plurality of prestressed steel bars (5) and a plurality of prestressed anchors (4); the concrete structure (2) is a concrete column; along the axial direction of the concrete column, the prestressed steel bars (5) are passed through the concrete column and the embedded plate (11); the prestressed steel bars (5) extend into the cavity (15) and are fixedly connected to the prestressed anchors (4).

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