Steel beam and concrete beam embedded part bolting structure

Abstract

The invention relates to the technical field of building steel, in particular to a steel beam and concrete beam embedded part bolting structure which comprises a concrete beam, an anchoring steel plate fixed to a concrete beam embedded part through bolts and a steel beam located on the right side of the anchoring steel plate. Supporting groups are mounted at the upper and lower ends of the connecting plate; positioning groups are mounted at the front ends of the opposite sides of the horizontal section of the connecting plate; the steel beam and the connecting plate can be accurately aligned up and down, then the connecting hole of the steel beam and the bolt hole of the connecting plate are quickly aligned, and the subsequent steel beam and connecting plate bolting construction engineering is not affected, so that the steel beam and connecting plate bolting construction efficiency is improved, and the construction period is shortened. And meanwhile, the inner sides of the upper flange and the lower flange of the bolted steel beam can be rigidly supported, so that the stability of the bolted steel beam and the connecting plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building steel, in particular to a bolted connection structure of steel beams and concrete beam embedded parts. Background Art

[0002] In building structure engineering, the connection between steel beams and concrete beams is the key link to achieve the coordinated force of the two materials. As a light and high-strength load-bearing component, steel beams are Figure 1 As shown in the figure, the steel beam consists of two horizontally arranged flanges and a web connecting the two flanges and arranged perpendicular to the flanges. Steel beams are widely used in large-span buildings, industrial plants and other structures due to their excellent tensile and shear properties and good ductility, and can effectively improve the overall seismic performance; while concrete beams have excellent compressive properties and are suitable for bearing vertical loads. In order to give full play to the mechanical properties of the two materials, they need to be combined through a reliable connection method. Among them, bolted connection has become a commonly used connection form due to its advantages such as detachability and clear force transmission. In this type of connection, concrete beams are usually pre-embedded with bolts as embedded parts to provide a basic force point for the connection with the steel beam.

[0003] In the existing technology, the bolting of steel beams and embedded parts of concrete beams is mostly achieved by using a T-shaped structure: that is, a connecting plate perpendicular to the plane of the steel plate is welded on a steel plate to form a T-shaped assembly between the steel plate and the connecting plate; the steel plate is then fixed to the embedded bolts of the concrete beam by bolts to complete the connection between the T-shaped assembly and the concrete beam; a plurality of connecting holes are pre-opened on the web of the steel beam, and high-strength bolts are used to fasten the steel beam and the connecting plate through the bolt holes pre-opened on the corresponding connecting plates. In the actual connection process, the spatial position of the steel beam must be manually adjusted first so that the connecting holes of the steel beam web are preliminarily aligned with the bolt holes of the connecting plate, and then a number of temporary bolts are installed to pre-fix the two. Finally, the temporary bolts are removed and replaced with high-strength bolts to complete the final bolting.

[0004] The existing T-shaped bolt connection structure has the following problems when connecting steel beams and concrete beam embedded parts: Due to the large deadweight of the steel beam, it is difficult to accurately align the steel beam web connection holes with the connection plate bolt holes when manually adjusting the steel beam position. It is easy for the bolts to fail to penetrate smoothly due to hole position deviation, which requires repeated lifting and adjustment, reducing construction efficiency. In addition, the installation and removal process of temporary bolts is cumbersome, not only requiring multiple repetitive operations, but also may further aggravate the hole position deviation due to uneven stress distribution during temporary fixation, which not only increases the construction labor intensity, but also easily reduces the ultimate stress stability of the bolted structure. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a bolted connection structure between a steel beam and a concrete beam embedded part, comprising a concrete beam, an anchoring steel plate fixed by bolts on the concrete beam embedded part, and a steel beam located on the right side of the anchoring steel plate, wherein a U-shaped connecting plate is fixedly installed on the right end of the anchoring steel plate, supporting and positioning mechanisms are installed at the upper and lower ends of the connecting plate, and positioning guide mechanisms are installed at the upper and lower horizontal sections of the connecting plate; a plurality of bolt holes are provided on the vertical section of the connecting plate, and a plurality of connecting holes adapted to the bolt holes are provided on the web of the steel beam; the supporting and positioning mechanism comprises a supporting member installed on the connecting plate, and a detachable mounting is made on the upper supporting member A positioning top plate is installed, and a plurality of ball bearings are installed on the positioning top plate. The positioning top plate locates the upper and lower positions of the steel beam through the ball bearings; the positioning guide mechanism includes a fixed plate fixedly installed on the connecting plate, and a plug hole group corresponding to the bolt holes is opened on the fixed plate, and a detachable guide plug rod is installed in the plug hole group, and a plurality of pins are fixedly installed on the outside of the guide plug rod. The pins and the plug hole group are used to quickly install and disassemble the guide plug rod, and a plurality of circumferentially evenly arranged wedge blocks are radially slidably installed on the guide plug rod through an expansion group; the movement of the steel beam is guided by the guide plug rod, and the expansion group drives the wedge block to expand radially so that the connecting hole and the bolt hole are quickly aligned one by one.

[0006] Preferably, several of the bolt holes and connecting holes are arranged in a rectangular array, the upper fixing plate is fixedly installed at the left end of the horizontal section above the connecting plate and the position corresponding to the connecting hole, and the lower fixing plate is fixedly installed at the right end of the horizontal section below the connecting plate and the position corresponding to the connecting hole.

[0007] Preferably, the rear end of the guide rod is configured as a multi-step structure with a diameter gradually decreasing from front to back, and a truncated cone transition is used between two adjacent step structures, and the wedge block is located in the middle of the guide rod.

[0008] Preferably, the plug-in hole group includes a plug-in hole provided on the fixed plate and corresponding one-to-one to the guide plug rod, a plurality of locking holes evenly arranged circumferentially are provided on the inner wall of the plug-in hole, and a through hole connected to the locking hole is provided at the front end of the fixed plate, and the guide plug rod can be quickly locked and unlocked by cooperating with the pin and the corresponding locking hole.

[0009] Preferably, a concentrically arranged sliding rod is installed in the guide rod for sliding back and forth. The front end of the sliding rod passes through the front end of the guide rod and is fixedly installed with an operating plate. A rotating plate is provided on the outside of the sliding rod and in front of the guide rod through a rotating sleeve of a torsion spring. Two circumferentially evenly arranged locking rods are fixedly installed on the outside of the rotating plate.

[0010] Preferably, two locking plates are fixedly installed at the front end of the fixed plate and at the position corresponding to the plug-in hole, and the opposite sides of the two locking plates corresponding to the same plug-in hole are provided with multiple arc-shaped locking grooves evenly arranged front and back. The locking rod is used to cooperate with the arc-shaped locking groove to quickly lock and unlock the front and rear positions of the sliding rod.

[0011] Preferably, the wedge surface of the wedge block is located at the front end, and the expansion group includes an expansion plate that is slidably installed in the guide rod and corresponds to the wedge block one by one. The front end of the expansion plate is set as a slope, and the rear ends of the opposite sides of the multiple wedge blocks are provided with slopes that are arranged to contact the corresponding expansion plate slopes, and the wedge block slopes are slidably connected to the corresponding expansion plate slopes through the guide slider, and the opposite sides of the multiple expansion plates are fixedly connected to their corresponding sliding rods.

[0012] Preferably, the support member includes a support plate connected by a plurality of guide rods and a horizontal section of a connecting plate for sliding up and down. Adjustment screws are rotatably installed on opposite sides of the two support plates, and the adjustment screws are threadedly connected to the corresponding horizontal section of the connecting plate.

[0013] Preferably, a plurality of sliding blocks are installed on the upper end of the support plate in a detachable manner so as to slide back and forth, the upper end of the sliding block is fixedly connected to the lower end of the positioning top plate, an elastic matching rod is passed through the right end of the upper support plate and is installed so as to slide left and right, and a matching hole is provided on the right end of the rightmost sliding block so as to match with the elastic matching rod.

[0014] Preferably, the opposite side surfaces of the two support plates are each provided with a plurality of pointed protrusions to increase the friction between the support plates and the steel beam flanges.

[0015] The beneficial effects of the present invention are: 1. The present invention provides a detachable positioning top plate and a ball bearing to first position and support the lower side of the flange above the steel beam, so that the upper and lower positions of the steel beam and the connecting plate are accurately aligned, and under the action of the ball bearing, the front and rear positions and left and right positions of the steel beam can be smoothly adjusted. At the same time, the present invention provides a guide rod that is inserted into the connecting hole of the corresponding steel beam to guide the movement of the steel beam, and drives the radial expansion of the wedge block through the expansion group to quickly align the connecting hole and the bolt hole one by one, thereby improving the bolting construction efficiency of the steel beam and the connecting plate. In addition, the present invention provides a plug hole group and a pin to cooperate to achieve rapid installation and disassembly of the guide rod, so that it will not affect the construction project of bolting the steel beam and the connecting plate, further improving the bolting construction efficiency of the steel beam and the connecting plate.

[0016] 2. After the steel beam and the connecting plate are bolted together, the present invention provides a support plate with adjustable position to rigidly support the inner side of the steel beam flange, thereby increasing the stability of the steel beams and connecting plates of different sizes after the bolting is completed. At the same time, a plurality of pointed protrusions are provided on the support plate to increase the friction between the support plate and the steel beam flange, thereby increasing the stability of the support plate when rigidly supporting the steel beam flange.

[0017] 3. The present invention drives the rigid radial expansion of the corresponding multiple wedge blocks by setting an expansion group, ensuring that the connection holes of the steel beam and the bolt holes of the connecting plate are accurately aligned one by one. At the same time, the wedge surfaces of the multiple wedge blocks can push the steel beam forward evenly, ensuring that the front end of the steel beam web and the rear end of the connecting plate are evenly fitted, preventing uneven stress distribution after the bolts of the steel beam and the connecting plate are fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a cross-sectional view of the connecting plate and the supporting and positioning mechanism of the present invention.

[0021] Figure 3 It is a cross-sectional view of the steel beam connecting plate and the positioning guide member of the present invention.

[0022] Figure 4 The present invention Figure 3 Enlarged view of point A.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing plate and the pin of the present invention.

[0024] Figure 6 This is a state diagram of the steel beam and the connecting plate after pre-fixation according to the present invention.

[0025] Figure 7 This is a state diagram after the steel beam and the connecting plate are bolted together according to the present invention.

[0026] Figure numerals: 1. Concrete beam; 2. Anchor steel plate; 3. Steel beam; 4. Connecting plate; 5. Support and positioning mechanism; 51. Support member; 511. Guide rod; 512. Support plate; 513. Adjusting screw; 514. Sliding block; 515. Elastic fitting rod; 52. Positioning top plate; 53. Ball; 6. Positioning and guiding mechanism; 61. Fixed plate; 611. Locking plate; 62. Guide rod; 621. Sliding rod; 622. Operating plate; 623. Rotating plate; 624. Locking rod; 63. Pin; 64. Wedge block; 65. Locking hole; 66. Expansion plate. DETAILED DESCRIPTION

[0027] The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0028] See Figure 1 、 Figure 6 and Figure 7 A bolted connection structure between a steel beam and a concrete beam embedded part comprises a concrete beam 1, an anchoring steel plate 2 fixed by bolts to the embedded part of the concrete beam 1, and a steel beam 3 located on the right side of the anchoring steel plate 2. A U-shaped connecting plate 4 is fixedly installed on the right end of the anchoring steel plate 2. Support and positioning components 5 are installed on the upper and lower ends of the connecting plate 4. A positioning guide component 6 is installed on the front end of the opposite side of the horizontal section of the connecting plate 4; a plurality of bolt holes are provided on the vertical section of the connecting plate 4, and a plurality of connecting holes adapted to the bolt holes are provided on the web of the steel beam 3; the plurality of bolt holes and the connecting holes are all in a rectangular array.

[0029] See Figure 1 、 Figure 2 and Figure 6 The supporting and positioning mechanism 5 includes a supporting member 51 installed on the connecting plate 4, and a positioning top plate 52 is detachably installed on the upper supporting member 51. A plurality of balls 53 are installed on the positioning top plate 52, and the positioning top plate 52 locates the upper and lower positions of the steel beam 3 through the balls 53; the supporting and positioning mechanism 5 can position the upper and lower positions of the steel beam 3 so that the upper and lower positions of the steel beam 3 and the connecting plate 4 are accurately aligned. At the same time, the steel beam 3 can move smoothly back and forth and left and right on the supporting and positioning mechanism 5 to ensure the smoothness of the adjustment of the front and rear positions and left and right positions of the steel beam 3. In addition, after the steel beam 3 and the connecting plate 4 are bolted together, the supporting and positioning mechanism 5 can also rigidly support the upper and lower flanges of the steel beam 3 located on the front side of the web to increase the stability of the steel beam 3 and the connecting plate 4 after the bolting is completed.

[0030] See Figure 1 、 Figure 3 and Figure 6The positioning guide member 6 includes a fixed plate 61 fixedly mounted on the connecting plate 4, and a plug hole group corresponding to the bolt hole is opened on the fixed plate 61. A detachable guide rod 62 is installed in the plug hole group, and a plurality of pins 63 are fixedly installed on the outside of the guide rod 62. The pins 63 and the plug hole group are used to quickly install and remove the guide rod 62. A plurality of wedge blocks 64 uniformly arranged in the circumferential direction are radially slidably installed on the guide rod 62 through the expansion group; the movement of the steel beam 3 is guided by the guide rod 62, and the guide rod 62 is provided with a plurality of wedge blocks 64 uniformly arranged in the circumferential direction. The combined expansion group drives the wedge block 64 to expand radially so that the connection holes and the bolt holes are quickly aligned one by one; the positioning guide mechanism 6 can quickly align the connection holes of the steel beam 3 and the bolt holes of the connecting plate 4, and when the operator bolts the steel beam 3 and the connecting plate 4 with high-strength bolts, the positioning guide mechanism 6 will not affect the progress of the construction project, thereby improving the construction efficiency of the bolting of the steel beam 3 and the connecting plate 4; the guide rod 62 and the corresponding bolt hole are concentrically arranged, and its diameter is slightly smaller than the bolt hole, so that the guide rod 62 can be smoothly inserted into the bolt hole.

[0031] Specifically, when it is necessary to connect the steel beam 3 and the concrete beam 1, first control the upper support 51 to adjust the upper and lower positions of the positioning top plate 52 and the ball 53 according to the distance between the uppermost connection hole of the steel beam 3 and the upper flange, and insert the guide rod 62 into the plug hole group and the corresponding bolt hole, rotate the guide rod 62 so that the pin 63 can cooperate with the plug hole group to quickly lock the front and rear positions of the guide rod 62, and then fix the embedded bolts of the anchor steel plate 2 and the concrete beam 1 together by bolting, and then use an external crane to lift the steel beam 3 to the rear position of the connecting plate 4 and move the steel beam 3 forward.

[0032] Synchronously manually adjust the height and left and right positions of the steel beam 3 so that the guide rod 62 is inserted into the corresponding connecting hole on the steel beam 3. The steel beam 3 is guided forward along the length direction of the guide rod 62 so that the bolt holes and the connecting holes are initially aligned one by one. When the upper flange of the steel beam 3 moves forward to the corresponding position of the ball 53, the height of the steel beam 3 is manually adjusted so that the ball 53 can abut against the lower side of the upper flange, thereby realizing the positioning of the upper and lower positions of the steel beam 3 and accurately aligning the upper and lower positions of the steel beam 3 and the connecting plate 4 (that is, the connecting holes of the steel beam 3 and the bolt holes of the connecting plate 4 in the same row are on the same horizontal line), and under the action of the ball 53, the steel beam 3 can move smoothly back and forth and left and right.

[0033] When the steel beam 3 moves forward until the front end of its web contacts the rear end of the connecting plate 4, the steel beam 3 is controlled to stop moving. At this time, the connecting hole of the steel beam 3 moves to the corresponding position of the wedge block 64, and the corresponding multiple wedge blocks 64 are driven to expand radially through the expansion group. The inclined surface of the wedge block 64 pushes the corresponding connecting hole of the steel beam 3 to move the steel beam 3 left and right, and the connecting hole is concentrically arranged with the guide rod 62 under the action of the wedge surface of the wedge block 64, so that the connecting hole and the bolt hole are quickly aligned one by one, and the steel beam 3 is pre-fixed.

[0034] Then the operator first uses high-strength bolts to bolt the bolt holes that are not inserted into the guide rods 62 and the corresponding connecting holes, and then rotates the guide rods 62 to enable the pins 63 to quickly insert into the hole group and release the lock on the guide rods 62, and quickly remove the guide rods 62 from the insertion hole group and the corresponding bolt holes, so that the bolt holes and connecting holes corresponding to the guide rods 62 can be bolted, ensuring the efficiency of the bolting construction of the connecting plate 4 and the steel beam 3. After the bolting is completed, the positioning top plate 52 is removed from the support member 51, and the two support members 51 are controlled to rigidly support the inner sides of the upper and lower flanges of the steel beam 3 to complete the connection between the steel beam 3 and the connecting plate 4.

[0035] It should be noted that in the present invention, concrete beams 1 are provided at both ends of the steel beam 3. The present invention only shows the bolting result of one end of the steel beam 3. The bolting structure of the other end is the same, so it is not shown in the drawings.

[0036] In order to increase the convenience of installing the guide rod 62 in the insertion hole group and the corresponding bolt hole, and at the same time prevent the guide rod 62 from affecting the construction of the high-strength bolt-bolted steel beam 3 and the connecting plate 4, the present invention adopts a quick-release design of the guide rod 62 to achieve rapid installation and removal of the guide rod 62, thereby improving the bolting construction efficiency of the steel beam 3 and the connecting plate 4. Figure 3 and Figure 5 The plug-in hole group includes a plug-in hole arranged on the fixed plate 61 and corresponding to the guide plug rod 62 one by one. A plurality of locking holes 65 uniformly arranged circumferentially are provided on the inner wall of the plug-in hole. A through hole connected to the locking hole 65 is provided at the front end of the fixed plate 61. The guide plug rod 62 can be quickly locked and unlocked by cooperating with the pin 63 and the corresponding locking hole 65.

[0037] Specifically, when it is necessary to insert the guide rod 62 into the corresponding bolt hole, first insert the guide rod 62 into the corresponding plug-in hole, and insert the corresponding pin 63 into the locking hole 65 through the corresponding through hole, and then manually rotate the guide rod 62, and the guide rod 62 drives the corresponding pin 63 to rotate, so that the pin 63 and the corresponding through hole are misaligned, so that the pin 63 and the corresponding locking hole 65 cooperate to achieve the rapid front and rear position locking of the guide rod 62. Similarly, by manually rotating the guide rod 62, the guide rod 62 drives the corresponding pin 63 to rotate to the corresponding position of the through hole, so that the guide rod 62 can be quickly removed from the bolt hole and the plug-in hole.

[0038] In order to ensure the stability of the steel beam 3 after pre-fixation, the present invention uses two guide rods 62 to insert the rectangular array of connection holes and bolt holes into the corresponding connection holes in a diagonal manner, so that the wedge blocks 64 pre-fix the diagonally arranged connection holes and bolt holes. Figure 1 and Figure 6 The upper fixing plate 61 is fixedly installed at the position corresponding to the left end of the horizontal section above the connecting plate 4 and the connecting hole, and the lower fixing plate 61 is fixedly installed at the position corresponding to the right end of the horizontal section below the connecting plate 4 and the connecting hole.

[0039] In order to facilitate the rapid insertion of the guide rod 62 into the corresponding connection hole of the steel beam 3 when lifting the steel beam 3, see Figure 3 The present invention adopts a multi-step structure in which the rear end of the guide rod 62 gradually decreases in diameter from front to back, and a frustum is used for transition between two adjacent step structures, and the wedge block 64 is located in the middle of the guide rod 62; thereby, the guide rod 62 with a smaller diameter can be quickly inserted into the connecting hole of the corresponding steel beam 3, and as the steel beam 3 moves forward along the guide rod 62, the steel beam 3 gradually moves to the corresponding position of the columnar structure at the front of the guide rod 62, and a frustum is used for transition between two adjacent step structures, so as not to interfere with the movement of the steel beam 3.

[0040] In order to make the connection holes of the steel beam 3 and the bolt holes of the connecting plate 4 accurately aligned one by one, the present invention adopts the method of rigid radial expansion of the wedge block 64 to make the central axis of the bolt hole of the connecting plate 4, the central axis of the guide rod 62 and the central axis of the connection hole of the steel beam 3 collinear, and make the wedge block 64 able to accurately align the connection holes of the steel beam 3 and the bolt holes of the connecting plate 4 of different sizes. At the same time, when the wedge block 64 rigidly expands, the wedge surfaces of multiple wedge blocks 64 corresponding to the same connection hole can push the steel beam 3 forward evenly, ensuring that the front end of the web of the steel beam 3 and the rear end of the connecting plate 4 are evenly fitted, thereby preventing uneven stress distribution after the bolt fixation of the steel beam 3 and the connecting plate 4 is completed. Figure 3A concentrically arranged sliding rod 621 is installed in the guide rod 62 for sliding back and forth. The front end of the sliding rod 621 passes through the front end of the guide rod 62 and is fixedly installed with an operating plate 622. A rotating plate 623 is provided on the outside of the sliding rod 621 and in front of the guide rod 62, which is rotated by a torsion spring. Two circumferentially evenly arranged locking rods 624 are fixedly installed on the outside of the rotating plate 623.

[0041] Continue reading Figure 3 Two locking plates 611 are fixedly installed at the front end of the fixed plate 61 and at the position corresponding to the plug-in hole. The opposite sides of the two locking plates 611 corresponding to the same plug-in hole are provided with multiple arc-shaped locking grooves evenly arranged front and back. The locking rod 624 is used to cooperate with the arc-shaped locking groove to quickly lock and unlock the front and rear positions of the sliding rod 621.

[0042] See Figure 3 and Figure 4 The wedge surface of the wedge block 64 is located at the front end, and the expansion group includes an expansion plate 66 that is slidably installed in the guide rod 62 and corresponds to the wedge block 64 one by one. The front end of the expansion plate 66 is set as a slope, and the rear ends of the opposite sides of multiple wedge blocks 64 are provided with slopes that are in contact with the corresponding slopes of the expansion plate 66, and the slopes of the wedge block 64 are slidably connected to the corresponding slopes of the expansion plate 66 through the guide slider, and the opposite sides of multiple expansion plates 66 are fixedly connected to their corresponding sliding rods 621.

[0043] Specifically, when the guide rod 62 is inserted into the corresponding plug-in hole and bolt hole, the rotating plate 623 is first controlled to rotate a certain angle so that the locking rod 624 moves out of the arc groove. When the steel beam 3 moves forward until the front end of its web contacts the rear end of the connecting plate 4, the steel beam 3 is controlled to stop moving. At this time, the connecting hole of the steel beam 3 moves to the corresponding position of the wedge block 64. The sliding rod 621 is manually pulled forward through the operating plate 622. The sliding rod 621 drives the expansion plate 66 to move forward. The inclined surface of the expansion plate 66 pushes the inclined surface of the corresponding wedge block 64, and under the action of the guide slider, the multiple wedge blocks 64 corresponding to the same guide rod 62 are rigidly radially expanded.

[0044] When the front end of the web of the steel beam 3 and the rear end of the connecting plate 4 are evenly fitted, it is impossible to continue pulling the sliding rod 621 forward, and then release the rotating plate 623, so that the rotating plate 623 drives the locking rod 624 to rotate to the initial state under the action of the torsion spring, and the locking rod 624 rotates to the corresponding arc-shaped locking groove, so that the locking rod 624 and the arc-shaped locking groove cooperate to quickly lock the front and rear positions of the sliding rod 621, thereby realizing the pre-fixation of the steel beam 3 and the connecting plate 4 by the wedge block 64. Similarly, by controlling the rotating plate 623 to rotate a certain angle and pushing the sliding rod 621 backward, multiple wedge blocks 64 can be returned to their initial positions, ensuring that the guide rod 62 can be quickly removed from the plug hole, bolt hole and connecting hole.

[0045] In order to be able to rigidly support the inner side of the flange of the steel beam 3 of different sizes, the present invention adopts an adjustable method to rigidly support the inner side of the flange of the steel beam 3, thereby increasing the stability of the steel beam 3 of different sizes and the connecting plate 4 after the bolt connection is completed. Figure 2 and Figure 7 The support member 51 includes a support plate 512 that is connected to the horizontal section of the connecting plate 4 by sliding up and down through multiple guide rods 511. Adjustment screws 513 are rotatably installed on the opposite sides of the two support plates 512, and the adjustment screws 513 are threadedly connected to the corresponding horizontal section of the connecting plate 4.

[0046] In order to realize the positioning of the upper and lower positions of the steel beam 3 and facilitate the adjustment of the left and right positions and the front and rear positions of the steel beam 3, the present invention adopts a detachable positioning top plate 52 and a ball bearing 53 to support and position the flange above the steel beam 3; Figure 2 The upper end of the support plate 512 is equipped with multiple sliding blocks 514 in a detachable manner so as to slide back and forth. The upper end of the sliding block 514 is fixedly connected to the lower end of the positioning top plate 52. An elastic matching rod 515 is installed through the right end of the upper support plate 512 and slides left and right. The right end of the rightmost sliding block 514 is provided with a matching hole that matches the elastic matching rod 515.

[0047] When the locking cam 514 is in the unlocked position, the locking cam 514 is released and the locking cam 516 is unlocked, so that the locking cam 516 is unlocked and the locking cam 516 is unlocked.

[0048] After the steel beam 3 and the connecting plate 4 are bolted together, the elastic mating rod 515 is pulled out of the mating hole and the positioning top plate 52 is removed. The two adjusting screws 513 are screwed to drive the two support plates 512 to move toward opposite sides, so that the two support plates 512 can rigidly support the inner sides of the two flanges of steel beams 3 of different sizes.

[0049] In order to increase the stability of the support plate 512 when rigidly supporting the flange of the steel beam 3, refer to Figure 2In the present invention, two support plates 512 are provided with a plurality of pointed protrusions on their opposite side surfaces to increase the friction between the support plates 512 and the flange of the steel beam 3.

[0050] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0051] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolted connection structure between a steel beam and a concrete beam embedded part, comprising a concrete beam, an anchoring steel plate bolted to the concrete beam embedded part, and a steel beam located to the right of the anchoring steel plate, characterized in that: A U-shaped connecting plate is fixedly installed at the right end of the anchor steel plate, and supporting and positioning parts are installed at the upper and lower ends of the connecting plate, and positioning guide parts are installed at the upper and lower horizontal sections of the connecting plate; The vertical section of the connecting plate is provided with a plurality of bolt holes, and the web of the steel beam is provided with a plurality of connecting holes adapted to the bolt holes; The supporting and positioning mechanism includes a supporting member mounted on the connecting plate, a positioning top plate is detachably mounted on the upper supporting member, a plurality of balls are mounted on the positioning top plate, and the positioning top plate positions the upper and lower positions of the steel beam through the balls; The positioning guide mechanism includes a fixed plate fixedly mounted on the connecting plate, a plug hole group corresponding to the bolt holes is opened on the fixed plate, a detachable guide rod is installed in the plug hole group, a plurality of pins are fixedly mounted on the outside of the guide rod, the pins and the plug hole group are used to quickly install and disassemble the guide rod, and a plurality of circumferentially evenly arranged wedge blocks are radially slidably mounted on the guide rod through an expansion group; the movement of the steel beam is guided by the guide rod, and the expansion group drives the wedge block to expand radially so that the connecting hole and the bolt hole are quickly aligned one by one.

2. A bolted connection structure of steel beam and concrete beam embedded parts according to claim 1, characterized in that: Several of the bolt holes and connecting holes are arranged in a rectangular array. The upper fixing plate is fixedly installed at the left end of the horizontal section above the connecting plate and the position corresponding to the connecting hole. The lower fixing plate is fixedly installed at the right end of the horizontal section below the connecting plate and the position corresponding to the connecting hole.

3. The bolted connection structure of steel beam and concrete beam embedded parts according to claim 1, characterized in that: The rear end of the guide rod is set as a multi-step structure with a diameter gradually decreasing from front to back, and a truncated cone transition is used between two adjacent step structures, and the wedge block is located in the middle of the guide rod.

4. The bolted connection structure of steel beam and concrete beam embedded parts according to claim 1, characterized in that: The plug-in hole group includes a plug-in hole arranged on the fixed plate and corresponding to the guide plug rod one by one. A plurality of locking holes evenly arranged circumferentially are provided on the inner wall of the plug-in hole. A through hole connected to the locking hole is provided at the front end of the fixed plate. The guide plug rod can be quickly locked and unlocked by cooperating with the pin and the corresponding locking hole.

5. The bolted connection structure of steel beam and concrete beam embedded parts according to claim 1, characterized in that: A concentrically arranged sliding rod is installed in the guide rod for sliding back and forth. The front end of the sliding rod passes through the front end of the guide rod and is fixedly installed with an operating plate. A rotating plate is provided on the outside of the sliding rod and in front of the guide rod through a torsion spring. Two circumferentially evenly arranged locking rods are fixedly installed on the outside of the rotating plate.

6. A bolted connection structure of embedded parts of steel beams and concrete beams according to claim 5, characterized in that: Two locking plates symmetrically arranged up and down are fixedly installed at the front end of the fixed plate and at the position corresponding to the plug-in hole. The opposite sides of the two locking plates corresponding to the same plug-in hole are provided with multiple arc-shaped locking grooves evenly arranged front and back. The locking rod is used to cooperate with the arc-shaped locking groove to quickly lock and unlock the front and rear positions of the sliding rod.

7. The bolted connection structure of embedded parts of steel beams and concrete beams according to claim 5, characterized in that: The wedge surface of the wedge block is located at the front end, and the expansion group includes an expansion plate that is slidably installed in the guide rod and corresponds to the wedge block one by one. The front end of the expansion plate is set as a slope, and the rear ends of the opposite sides of the multiple wedge blocks are provided with slopes that are contacted with the corresponding expansion plate slopes. The wedge block slopes are slidably connected to the corresponding expansion plate slopes through the guide sliders, and the opposite sides of the multiple expansion plates are fixedly connected to their corresponding sliding rods.

8. The bolted connection structure of embedded parts of steel beams and concrete beams according to claim 1, characterized in that: The support member includes a support plate connected by a plurality of guide rods and a horizontal section of a connecting plate for sliding up and down. Adjustment screws are rotatably installed on opposite sides of the two support plates, and the adjustment screws are threadedly connected to the corresponding horizontal section of the connecting plate.

9. The bolted connection structure of embedded parts of steel beams and concrete beams according to claim 8, characterized in that: The upper end of the support plate above is equipped with multiple sliding blocks that can be slid back and forth in a detachable manner. The upper end of the sliding block is fixedly connected to the lower end of the positioning top plate. An elastic matching rod is installed through the right end of the upper support plate and slides left and right. The right end of the rightmost sliding block is provided with a matching hole that matches the elastic matching rod.

10. The bolted connection structure of embedded parts of steel beams and concrete beams according to claim 8, characterized in that: The opposite side surfaces of the two support plates are both provided with a plurality of pointed protrusions to increase the friction between the support plates and the steel beam flanges.

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