Structure beam-column connection node of civil air defense building and construction method thereof

Abstract

The application relates to a structure beam-column connecting joint of a civil air defense building and a construction method thereof, which comprises a connecting piece, one end of the connecting piece is used for being connected with a structure column provided with a plugging angle steel, the other end is used for being connected with a structure beam, the connecting piece is provided with an avoiding surface, the connecting piece is provided with an accommodating cavity, two ends of the accommodating cavity are respectively penetrated through two end surfaces of the connecting piece, a movable plate is arranged in the accommodating cavity, the movable plate is slidably connected to the connecting piece along the length direction of the accommodating cavity, a butt joint piece is arranged on the surface of the movable plate facing the structure column, the butt joint piece is used for being butted by the structure column, and a fixing assembly is arranged on the surface of the movable plate away from the butt joint piece, the fixing assembly is used for being connected with a steel bar, and has the effect of ensuring the connecting strength between the structure beam and the structure column under the condition that the structure column is provided with the plugging angle steel. The application further discloses a construction method of the structure beam-column connecting joint of the civil air defense building.

Description

Technical Field

[0001] This application relates to the field of structural beam-column connection technology, and in particular to a structural beam-column connection node for civil defense buildings and its construction method. Background Technology

[0002] Currently, most underground civil defense shelters adopt cast-in-place concrete beam-slab structures. Due to the collision problem between the sealing angle steel and the structural beam perpendicular to the portal sealing direction, it is necessary to reduce the beam height or change the beam to an upward-turning beam, or to make the beam avoidance treatment at the connection of the structural beam and column. Ultimately, this results in a small connection area between the structural beam and the structural column with sealing angle steel, which in turn leads to a relatively weak connection between the structural beam and column. Summary of the Invention

[0003] In order to ensure the connection strength between structural beams and structural columns when sealing angle steel is installed in the structural columns, this application provides a structural beam-column connection node for civil defense buildings and its construction method.

[0004] On the one hand, the structural beam-column connection node of a civil defense building provided in this application adopts the following technical solution:

[0005] A structural beam-column connection node for civil defense buildings and its construction method are disclosed. The connection includes a connector, one end of which is used to connect to a structural column equipped with a sealing angle steel, and the other end of which is used to connect to a structural beam. The connector has a clearance surface, forming a clearance space between the clearance surface and the structural column to allow the sealing angle steel to pass. The connector has a receiving cavity, with both ends of the cavity penetrating the two end faces of the connector. A movable plate is disposed within the receiving cavity, slidingly connected to the connector along the length of the receiving cavity. An abutment is disposed on the surface of the movable plate facing the structural column, the surface of the abutment away from the movable plate being used for the structural column to abut against. A fixing component is disposed on the surface of the movable plate away from the abutment, the fixing component being used to connect to reinforcing bars.

[0006] By adopting the above technical solution, a connector with a clearance surface is independently installed between the structural column and the structural beam. During the construction of the connection node, one end of the connector is first fixedly connected to the structural column to establish a stable connection between the connector and the structural column. Then, the movable plate is moved towards the structural beam to facilitate the operation of the construction personnel and to establish a stable connection between the fixed component and the reinforcing steel. Afterward, the movable plate is moved towards the structural column so that the abutment is tightly against the structural column, and concrete is poured into the receiving cavity at the same time as the structural beam is poured to further enhance the connection stability between the connector and the structure. Thus, a stable connection is established between the structural beam and the structural column using the connector, ensuring the connection strength between the structural beam and the structural column when the structural column is equipped with a sealing angle steel.

[0007] Optionally, a rotating shaft is provided inside the receiving cavity. The rotating shaft is located between the structural column and the movable plate. The central axis of the rotating shaft is perpendicular to the sliding direction of the movable plate. The rotating shaft is rotatably connected to the cavity wall of the receiving cavity. A driving member is connected to the connecting member, which is used to drive the rotating shaft to rotate. A flexible member is connected to the rotating shaft. The end of the flexible member away from the rotating shaft is connected to the surface of the movable plate facing the structural column.

[0008] By adopting the above technical solution, when the movable plate is moved towards the structural column, the driving component is activated. The driving component drives the rotating shaft to rotate, which in turn tightens the flexible component, thereby moving the movable plate. The structure is simple and easy to operate.

[0009] Optionally, the abutting member includes a guide portion, which is a helical rod and rotatably connected to the movable plate; a guide plate is provided in the receiving cavity, and the guide plate has a through-hole for the guide portion to pass through, the wall of the through-hole being used for the guide portion to abut.

[0010] By adopting the above technical solution, as the movable plate moves closer to the structural column, the abutment component rotates under the cooperation of the hole wall of the waist-shaped hole, so that the abutment component can penetrate into the structural column to a certain extent, further strengthening the connection strength between the connector and the structural column.

[0011] Optionally, the abutting member further includes an abutting portion connected to the end of the guide portion away from the movable plate; the abutting portion is a screw, and the end of the abutting portion away from the guide portion has a pointed tip.

[0012] By adopting the above technical solution, it is easier for the connecting parts to be drilled into the structural column, thus ensuring the connection strength between the connecting parts and the structural column.

[0013] Optionally, the structural column has a first connecting hole and a second connecting hole. The first connecting hole extends along the length direction of the abutment and penetrates the surface of the structural column facing the abutment. The diameter of the first connecting hole is smaller than the diameter of the abutment. The second connecting hole extends along the length direction of the first connecting hole. Multiple second connecting holes are provided. The multiple second connecting holes are arranged at intervals around the first connecting hole in the circumferential direction. All of the multiple second connecting holes communicate with the first connecting hole.

[0014] By adopting the above technical solution, as the movable plate moves closer to the structural column, the abutment is drilled into the first connection hole, and the movable plate is used to press concrete into the second connection hole, further strengthening the connection strength between the connector and the structural column.

[0015] Optionally, a sealing strip is connected to the side wall of the movable plate, and the sealing strip is arranged around the circumference of the movable plate; the sealing strip is arc-shaped, and the distance between the middle of the sealing strip and the structural column is greater than the distance between the two sides of the sealing strip and the structural column; the flexible component is connected to multiple tension straps, the other end of the tension straps is connected to the middle position of the sealing strip, and multiple connection points between the multiple tension straps and the sealing strip are arranged at intervals along the length direction of the sealing strip.

[0016] By adopting the above technical solution, during the movement of the movable plate towards the structural column, the flexible component is wrapped around the rotating shaft. The flexible component drives the tension belt to apply force to the middle position of the sealing strip, causing the sealing strip to deform. As a result, the closer the movable plate is to the structural column, the greater the contact force between the sealing strip and the cavity wall, that is, the better the sealing effect of the sealing strip, thereby reducing the risk of concrete overflowing from the gap between the movable plate and the cavity wall.

[0017] Optionally, at least two flexible strips are connected to the surface of the movable plate facing the structural column; at least two guide rollers are provided in the receiving cavity, and the guide rollers are located between the movable plate and the structural column; the fixing assembly includes at least two clamping rollers, the clamping rollers are rotatably connected to the cavity wall of the receiving cavity, and the movable plate is located between the guide rollers and the clamping rollers; the flexible strips pass around the guide rollers and are connected at the other end to the clamping rollers, the reinforcing bars are located between adjacent clamping rollers, and the flexible strips are used for the reinforcing bars to abut against; the connecting member is provided with a driving member, and the driving member is used to drive the clamping rollers to rotate.

[0018] By adopting the above technical solution, when the movable plate moves towards the structural column, the driving component is activated, which drives the clamping roller to rotate. During the rotation of the clamping roller, the flexible strip is wound around itself. On the one hand, the flexible strip drives the movable plate towards the structural column, and on the other hand, the amount of flexible strip wound around the clamping roller increases, thereby reducing the space between adjacent clamping rollers and increasing the holding force on the steel bar. This results in a greater degree of steel bar stretching and a greater clamping force of the fixing component on the steel bar, ensuring the connection strength between the fixing component and the steel bar during the stretching process.

[0019] Optionally, the drive unit and the connector can be detachably connected.

[0020] By adopting the above technical solution, on the one hand, it is convenient to reuse the driving components; on the other hand, it reduces the load on the connecting parts after construction is completed.

[0021] On the other hand, this application provides a construction method for structural beam-column connection nodes in civil defense buildings, including the following steps:

[0022] S1: Fix one end of the connector to the structural column;

[0023] S2: Move the movable plate relative to the connector to connect the fixing component to the reinforcing bar;

[0024] S3: Move the movable plate in the opposite direction so that the abutting member is pressed tightly against the structural column;

[0025] S4: While pouring the structural beam, pour concrete grout into the receiving cavity.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] By independently setting connectors between structural beams and structural columns, a stable connection is established between the connectors and structural columns, and a stable connection is established between the connectors and structural beams. In the case of sealing angle steel in the structural columns, the connection strength between structural beams and structural columns is ensured.

[0028] By opening the first and second connection holes in the structural column, and rotating the movable plate to connect the abutment, the abutment is embedded in the structural column after construction, further increasing the connection strength between the connector and the structural column. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram used to illustrate the internal structure of the connector in Embodiment 1.

[0031] Figure 3 This is a schematic diagram illustrating the structure of the guide plate in Embodiment 1.

[0032] Figure 4 This is a schematic diagram illustrating the structure of the first connecting hole and the second connecting hole in Embodiment 1.

[0033] Figure 5 yes Figure 2 Enlarged diagram of part A.

[0034] Figure 6 This is a schematic diagram illustrating the connection relationship between the sealing strip and the movable plate in Example 1.

[0035] Figure 7 This is a schematic diagram illustrating the structure of the driving component in Embodiment 1.

[0036] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0037] Figure 9This is a schematic diagram illustrating the installation of the drive component in Embodiment 2.

[0038] Explanation of reference numerals in the attached drawings: 1. Connector; 11. Clearance surface; 12. Clearance section; 13. Straight section; 14. Receiving cavity; 141. First cavity; 142. Second cavity; 15. Grouting hole; 151. Sealing component; 2. Movable plate; 21. Rotating shaft; 211. Groove; 22. Driving component; 221. Connecting rod; 23. Flexible component; 24. Sealing strip; 25. Pulling belt; 26. Flexible belt; 27. Guide roller; 3. Abutment component; 31. Guide part; 32. Abutment part; 4. Guide plate; 41. Waist-shaped hole; 5. Fixing assembly; 51. First screw; 52. Second screw; 53. Threaded sleeve; 54. Clamping roller; 55. Rotating disk; 56. Transmission belt; 6. Structural column; 61. First connecting hole; 62. Second connecting hole; 7. Reinforcing bar. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0040] This application discloses a structural beam-column connection node and construction method for civil defense buildings. Example 1

[0041] This embodiment discloses a structural beam-column connection node for civil defense buildings.

[0042] Reference Figure 1 The structural beam-column connection node of the civil defense building includes a connector 1. One end of the connector 1 is used to connect to the structural column 6 which is equipped with a sealing angle steel, and the other end is used to connect to the structural beam. The connector 1 has a clearance surface 11, and a clearance space is formed between the clearance surface 11 and the structural column 6 to accommodate the sealing angle steel.

[0043] The connector 1 can be fixed to the structural column 6 by bolts or welding. The specific shape of the clearance surface 11 is designed according to the specific connection method of the sealing angle steel and the portal sealing.

[0044] The connector 1 includes a clearance section 12 and a straight section 13. The clearance surface 11 is disposed on the clearance section 12, and the straight section 13 is used to connect with the structural beam.

[0045] Reference Figure 1 and Figure 2The connector 1 has a receiving cavity 14, with both ends of the receiving cavity 14 penetrating the two end faces of the connector 1. A movable plate 2 is disposed in the receiving cavity 14, and the movable plate 2 slides along the length of the receiving cavity 14 and is connected to the connector 1. The movable plate 2 is located in the straight section 13, and the movable plate 2 divides the receiving cavity 14 into a first cavity 141 and a second cavity 142. The first cavity 141 is the space between the movable plate 2 and the structural column 6. The sidewall of the movable plate 2 abuts against the cavity wall of the receiving cavity 14, and the movable plate 2 slides within the confinement of the cavity wall of the receiving cavity 14.

[0046] The connector 1 has a grouting hole 15, which is connected to the first cavity 141. The grouting hole 15 is a threaded hole. The connector 1 is threadedly connected to a sealing member 151, which is used to open and close the grouting hole 15.

[0047] The movable plate 2 is rotatably connected to the surface of the structural column 6, and the surface of the abutment 3 away from the movable plate 2 is used for the structural column 6 to abut against.

[0048] The abutting part 3 includes a guide part 31 and an abutting part 32. The guide part 31 is a helical rod and is rotatably connected to the movable plate 2. The abutting part 32 is a screw and is fixedly connected to the end of the guide part 31 away from the movable plate 2. The end of the abutting part 32 away from the guide part 31 has a pointed tip.

[0049] Reference Figure 3 A guide plate 4 is provided in the receiving cavity 14. The guide plate 4 is fixedly connected to the cavity wall of the receiving cavity 14. The guide plate 4 has a through-hole 41 for the guide part 31 to pass through. The wall of the through-hole 41 is used for the guide part 31 to abut. When the movable plate 2 moves towards the structural column 6, it drives the guide part 31 to move. The guide part 31 rotates under the abutment action of the wall of the through-hole 41, which in turn drives the abutment part 32 with a pointed tip to rotate, so that the abutment part 3 is tightly pressed against the structural column 6 or even drilled into the structural column 6, strengthening the connection strength between the connector 1 and the structural column 6, so that a reliable connection is formed between the connector 1 and the structural column 6.

[0050] Back Figure 2 The movable plate 2 is provided with a fixing component 5 on the surface away from the abutment 3. The fixing component 5 is used to connect with the reinforcing bar 7 so as to establish a connection between the connector 1 and the reinforcing bar 7 of the structural beam, and thus establish a connection between the connector 1 and the structural beam.

[0051] In this embodiment, the fixing component 5 includes a first screw 51, a second screw 52, ​​and a threaded sleeve 53. The first screw 51 is integrally formed with the movable plate 2, and the second screw 52 is welded and fixed to the reinforcing bar 7. The threaded sleeve 53 has a threaded hole for the first screw 51 and the second screw 52 to mate. The threaded sleeve 53 is normally connected to the first screw 51. When connecting the reinforcing bar 7 to the movable plate 2, the second screw 52 is first welded to the reinforcing bar 7. Then, the second screw 52 is aligned with the threaded hole, and the threaded sleeve 53 is turned relative to the first screw 51 until the threaded sleeve 53 connects the first screw 51 and the second screw 52. Since there are usually multiple reinforcing bars 7, multiple sets of fixing components 5 are provided.

[0052] Furthermore, in this embodiment, a rotating shaft 21 is provided in the receiving cavity 14. The central axis of the rotating shaft 21 is perpendicular to the sliding direction of the movable plate 2, and the rotating shaft 21 is rotatably connected to the cavity wall of the receiving cavity 14. In this embodiment, the rotating shaft 21 is located in the clearance section 12 to provide more space for the installation of the movable plate 2 and the fixing component 5.

[0053] Connector 1 is connected to drive component 22, which drives rotating shaft 21 to rotate relative to movable plate 2. Flexible component 23 is fixedly connected to the side wall of rotating shaft 21, with one end of flexible component 23 away from rotating shaft 21 connected to the surface of movable plate 2 facing structural column 6. After the connection between reinforcing bar 7 and fixing assembly 5 is completed, drive component 22 is activated, causing rotating shaft 21 to rotate. This causes flexible component 23 to wrap around rotating shaft 21, and subsequently, flexible component 23 drives movable plate 2 to move closer to structural column 6, so that abutment component 3 abuts against structural column 6, while simultaneously straightening reinforcing bar 7.

[0054] In this embodiment, the driving component 22 is a rotary motor. In other embodiments, the driving component 22 may also be a hydraulic cylinder or a pneumatic cylinder, which, through the cooperation of mechanical transmission components, drives the rotating shaft 21 to rotate.

[0055] The flexible component 23 can be a metal strip, a chain, or a rubber belt.

[0056] Reference Figure 2 and Figure 4 Furthermore, the structural column 6 is provided with a first connecting hole 61 and a second connecting hole 62. The first connecting hole 61 extends along the length direction of the abutment member 3, and its end penetrates the surface of the structural column 6 facing the movable plate 2. The first connecting hole 61 is used for the abutment member 3 to pass through, and its diameter is slightly smaller than the outer diameter of the abutment part 32. Multiple second connecting holes 62 are provided, and these multiple second connecting holes 62 are arranged at intervals along the circumference of the first connecting hole 61. All of the multiple second connecting holes 62 communicate with the first connecting hole 61.

[0057] After the connector 1 is installed on the structural column 6 and the reinforcing bar 7 is connected to the fixing component 5, the sealing component 151 is removed. First, concrete grout is injected into the first cavity 141 through the grouting hole 15, and then the sealing component 151 is reconnected to the grouting hole 15. Then, the driving component 22 is started, and the driving component 22 drives the rotating shaft 21 to rotate, thereby driving the movable plate 2 to move closer to the structural column 6 through the flexible component 23. During the movement of the movable plate 2, the abutment component 3 rotates, and the abutment part 32 rotates and gradually enters the first connecting hole 61. After the abutment part 32 enters the first connecting hole 61, it continues to rotate. The structural column 6, made of concrete, is broken and embedded in the threads under the cutting action of the external threads of the abutment part 32. At the same time, when the movable plate 2 moves, it forces the concrete grout in the first cavity 141 into the second connecting hole 62. The concrete grout in the second connecting hole 62 continues to mix with the concrete embedded in the abutment part 32 under the action of the rotation of the abutment part 32, so that a reliable connection is established between the abutment part 32 and the structural column 6.

[0058] Reference Figure 5 and Figure 6 Furthermore, a rubber sealing strip 24 is fixedly connected to the side wall of the movable plate 2. The sealing strip 24 is arranged around the circumference of the movable plate 2, and the side wall of the sealing strip 24 away from the movable plate 2 abuts against the cavity wall of the receiving cavity 14. The sealing strip 24 is arc-shaped, and the distance between the sealing strip 24 and the structural column 6 gradually decreases from the middle to both sides. A flexible belt 26 is connected to multiple tension belts 25, the other end of which is connected to the middle position of the sealing strip 24. Multiple connection points between the tension belts 25 and the sealing strip 24 are arranged at intervals along the length of the sealing strip 24. During the movement of the flexible belt 26, the tension belts 25 apply force to the middle of the sealing strip 24, causing the middle of the sealing strip 24 to tend to move and deform towards the structural column 6. This gradually increases the abutment force between the sealing strip 24 and the cavity wall of the receiving cavity 14, preventing concrete slurry in the first cavity 141 from flowing into the second cavity 142 through the gap between the movable plate 2 and the cavity wall.

[0059] Furthermore, the drive component 22 is detachably connected to the connector 1 to facilitate the reuse of the drive component 22 and reduce construction costs.

[0060] Reference Figure 7 The detachable structure of the drive component 22 and the connecting component 1 is as follows: the drive component 22 is connected to the connecting component 1 by bolts, and a connecting rod 221 with a cross-section of "*" is fixedly connected to the output end of the drive component 22. The rotating shaft 21 has a connecting groove 211 for inserting the connecting rod 221. When connecting the drive motor, first insert the connecting rod 221 into the connecting groove 211, and then connect the drive component 22 to the connecting component 1 by bolts; after the construction of the structural beam is completed, the drive component 22 can be disassembled.

[0061] This embodiment also provides a construction method for structural beam-column connection nodes in civil defense buildings, including the following steps:

[0062] S1: Connect one end of connector 1 to structural column 6 using bolts.

[0063] S2: Start the drive unit 22 to put the connector 1 in a relaxed state.

[0064] S3: Move the movable plate 2 closer to the reinforcing bar 7 to complete the connection between the fixing component 5 and the reinforcing bar 7.

[0065] S4: Start the drive unit 22 so that the connector 1 is wound around the rotating shaft 21, so that the movable plate 2 moves towards the structural column 6. When the abutment 3 is close to the position of the structural column 6, the drive unit 22 is turned off.

[0066] S5: Concrete is injected into the first cavity 141 through the grouting hole 15. After the injection is completed, the sealing member 151 is connected to the connector 1.

[0067] S6: Restart the drive unit 22 so that the drive unit 22 continues to drive the movable plate 2 to move closer to the structural column 6, so that the abutment 3 continues to drill into the first connecting hole 61.

[0068] S7: Casting structural beam, used for concrete flowing into the second cavity 142 of the cast structural beam.

[0069] The implementation principle of Example 1 is as follows: During the construction of the connection node between the structural beam and column, one end of the connector 1 is first connected to the structural column 6; then the drive component 22 is activated, so that the connector 1 is in a relaxed state, and the position of the movable plate 2 is adjusted towards the structural beam to complete the connection between the fixing component 5 and the reinforcing bar 7; then the drive component 22 is activated, so that the drive component 22 drives the rotating shaft 21 to rotate in the opposite direction, pulling the movable plate 2 to move closer to the structural column 6. During the movement of the movable plate 2, the reinforcing bar 7 is tightened, and the abutment component 3 is moved closer to the structural column 6 until the abutment component 3 moves to the vicinity of the structural column 6. When the drive unit 22 is turned off, concrete is poured into the first cavity 141. Then, the grouting hole 15 is sealed with the sealing part 151. The drive unit 22 is restarted, so that the movable plate 2 continues to move closer to the structural column 6. During the movement of the movable plate 2, the abutment part 3 rotates with the cooperation of the guide plate 4. When the abutment part 3 rotates, the abutment part 32 drills into the first connecting hole 61. At the same time, the movable plate 2 presses the concrete into the first connecting hole 61. Then, the structural beam is poured, and the concrete used for pouring the structural beam flows into the second cavity 142. Finally, the drive unit 22 can be removed from the connector 1. Example 2

[0070] The difference between this embodiment and embodiment 1 is that this embodiment does not include the rotating shaft 21, flexible component 23, tension belt 25, and sealing strip 24.

[0071] Reference Figure 8 Three flexible strips 26 are fixedly connected to the surface of the movable plate 2 facing the structural column 6. Three guide rollers 27 are provided in the receiving cavity 14. The guide rollers 27 are located between the movable plate 2 and the structural column 6. The guide rollers 27 are rotatably connected to the cavity wall of the receiving cavity 14. The guide rollers 27 are used for the flexible strips 26 to be wound.

[0072] In this embodiment, the fixing component 5 includes three clamping rollers 54, all of which are rotatably connected to the cavity wall of the receiving cavity 14. The movable plate 2 is located between the guide roller 27 and the clamping rollers 54. The flexible belt 26 passes around the guide roller 27 and is fixedly connected to the clamping roller 54 at the other end. The reinforcing bar 7 is located between adjacent clamping rollers 54, and the flexible belt 26 is used for the movable reinforcing bar 7 to abut against.

[0073] Reference Figure 8 and Figure 9 In this embodiment, the output end of the drive component 22 is connected to the clamping roller 54, and the drive component 22 is used to drive the clamping roller 54 to rotate. After the connector 1 is installed on the structural column 6, the movable plate 2 is moved first so that the end of the reinforcing bar 7 is located between adjacent clamping rollers 54; then the drive component 22 is activated, and the drive component 22 drives the clamping roller 54 to rotate, so that the clamping roller 54 drives the flexible strip 26 to wrap around itself during the rotation. On the one hand, the flexible strip 26 drives the movable plate 2 to move closer to the structural column 6, and on the other hand, it increases the amount of flexible strip 26 wrapped around the clamping roller 54, thereby reducing the space between adjacent clamping rollers 54, increasing the clamping force on the reinforcing bar 7, thereby increasing the degree of stretching of the reinforcing bar 7, and increasing the clamping force of the fixing component 5 on the reinforcing bar 7, ensuring the connection strength between the fixing component 5 and the reinforcing bar 7 during the stretching process.

[0074] In this embodiment, there is one drive component 22, and the ends of the three clamping rollers 54 are all fixedly connected to rotating disks 55. The three rotating disks 55 are driven to rotate synchronously through the transmission belt 56 to reduce the load on the connector 1.

[0075] It is understood that in this embodiment, the drive unit 22 is detachably connected to the clamping roller 54.

[0076] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A structural beam-column connection node for civil defense buildings, characterized in that: The system includes a connector (1), one end of which is used to connect to a structural column (6) with a sealing angle steel, and the other end is used to connect to a structural beam; the connector (1) has a clearance surface (11), and a clearance space is formed between the clearance surface (11) and the structural column (6) to allow clearance from the sealing angle steel; the connector (1) has a receiving cavity (14), and the two ends of the receiving cavity (14) respectively penetrate the two end faces of the connector (1); a movable plate (2) is provided in the receiving cavity (14), and the movable plate (2) slides along the length direction of the receiving cavity (14) and is connected to the connector (1); an abutment (3) is provided on the surface of the movable plate (2) facing the structural column (6), and the surface of the abutment (3) away from the movable plate (2) is used for the structural column (6) to abut; a fixing component (5) is provided on the surface of the movable plate (2) away from the abutment (3), and the fixing component (5) is used to connect to the reinforcing bar (7).

2. The structural beam-column connection node of the civil defense building according to claim 1, characterized in that: The cavity (14) is provided with a rotating shaft (21), which is located between the structural column (6) and the movable plate (2). The central axis of the rotating shaft (21) is perpendicular to the sliding direction of the movable plate (2). The rotating shaft (21) is rotatably connected to the cavity wall of the cavity (14). The connector (1) is connected to a driving member (22), which is used to drive the rotating shaft (21) to rotate. The rotating shaft (21) is connected to a flexible member (23), and one end of the flexible member (23) away from the rotating shaft (21) is connected to the surface of the movable plate (2) facing the structural column (6).

3. The structural beam-column connection node of the civil defense building according to claim 2, characterized in that: The abutting member (3) includes a guide part (31), which is a helical rod and is rotatably connected to the movable plate (2); a guide plate (4) is provided in the receiving cavity (14), and the guide plate (4) has a through-hole (41) for the guide part (31) to pass through, and the wall of the through-hole (41) is used for the guide part (31) to abut.

4. The structural beam-column connection node of the civil defense building according to claim 3, characterized in that: The abutting member (3) further includes an abutting part (32), which is connected to the end of the guide part (31) away from the movable plate (2); the abutting part (32) is a screw, and the end of the abutting part (32) away from the guide part (31) has a pointed tip.

5. The structural beam-column connection node of the civil defense building according to claim 4, characterized in that: The structural column (6) is provided with a first connecting hole (61) and a second connecting hole (62). The first connecting hole (61) extends along the length direction of the abutment (32) and penetrates the surface of the structural column (6) facing the abutment (32). The first connecting hole (61) is used for the abutment (3) to pass through and the hole diameter is smaller than the diameter of the abutment (32). The second connecting hole (62) extends along the length direction of the first connecting hole (61). There are multiple second connecting holes (62). The multiple second connecting holes (62) are arranged at intervals along the circumference of the first connecting hole (61). All of the multiple second connecting holes (62) are connected to the first connecting hole (61).

6. The structural beam-column connection node of the civil defense building according to claim 5, characterized in that: The side wall of the movable plate (2) is connected to a sealing strip (24), which is arranged around the circumference of the movable plate (2). The sealing strip (24) is arc-shaped, and the distance between the sealing strip (24) and the structural column (6) gradually decreases from the middle to both sides. The flexible component (23) is connected to multiple tension strips (25), and the other end of the tension strip (25) is connected to the middle position of the sealing strip (24). Multiple connection points between the multiple tension strips (25) and the sealing strip (24) are arranged at intervals along the length direction of the sealing strip (24).

7. The structural beam-column connection node of the civil defense building according to claim 1, characterized in that: The movable plate (2) has at least two flexible strips (26) connected to the surface of the structural column (6); at least two guide rollers (27) are provided in the receiving cavity (14), and the guide rollers (27) are located between the movable plate (2) and the structural column (6); the fixing assembly (5) includes at least two clamping rollers (54), the clamping rollers (54) are rotatably connected to the cavity wall of the receiving cavity (14), and the movable plate (2) is located between the guide rollers (27) and the clamping rollers (54); the flexible strips (26) pass around the guide rollers (27) and are connected to the clamping rollers (54) at the other end, the reinforcing bars (7) are located between adjacent clamping rollers (54), and the flexible strips (26) are used for the reinforcing bars (7) to abut against; the connecting member (1) is provided with a driving member (22), and the driving member (22) is used to drive the clamping rollers (54) to rotate.

8. The structural beam-column connection node of the civil defense building according to claim 7, characterized in that: The drive unit (22) is detachably connected to the connector (1).

9. A construction method for structural beam-column connection nodes in civil defense buildings according to any one of claims 1-8, characterized in that: S1: Fix one end of the connector (1) to the structural column (6). S2: Move the movable plate (2) forward relative to the connector (1) to connect the fixing component (5) to the steel bar (7); S3: Move the movable plate (2) in the opposite direction so that the abutting member (3) abuts against the structural column (6); S4: While pouring the structural beam, pour concrete into the receiving cavity (14).

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