Large-span steel reinforced concrete beam column structure construction joint reinforcing device

Abstract

The invention relates to the technical field of steel reinforced concrete construction equipment, in particular to a large-span steel reinforced concrete beam column structure construction joint reinforcing device which comprises a supporting platform placed on the construction ground, and supporting columns are symmetrically installed on the top of the supporting platform and close to the edge of the supporting platform. A main hydraulic push rod is installed in the middle of the upper end face of the supporting platform, a U-shaped plate is fixedly connected to the end face of a piston rod at the top of the main hydraulic push rod, positioning lugs are welded to the outer walls of the two sides of the U-shaped plate and inserted into the outer walls of the supporting columns, and a reinforcing structure for externally fixing the steel reinforced concrete beam column construction joint is installed at the top of the U-shaped plate. The reinforcing structure comprises an outer shell fixedly connected with the U-shaped plate, inclined holes are symmetrically formed in the bottom of the outer shell, a secondary hydraulic push rod is installed at the bottom of the outer shell, and a top piston rod of the secondary hydraulic push rod penetrates through the outer shell. The method has the reinforcing requirement suitable for gradient interface construction nodes, and the applicability is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of steel reinforced concrete construction equipment, and particularly to a reinforcement device for construction joints of large-span steel reinforced concrete beam-column structures. Background Art

[0002] During the construction process of large-span steel reinforced concrete beam-column structures, the joint area is the part where the stress is the most complex. Its bearing capacity and construction quality are directly related to the safety and stability of the overall structure. Due to the complex geometric shape and concentrated stress in the joint area, large lateral pressure is easily generated during concrete pouring, resulting in deformation, displacement, and even formwork explosion of the outer formwork, seriously affecting the forming quality of concrete and the structural performance. Therefore, the reinforcement of the outer formwork at the construction joint becomes a key link to ensure the project quality. The reinforcement of the outer formwork is an important part of the construction joint reinforcement. Its purpose is to ensure that the geometric dimensions and stress performance of the joint meet the design requirements during the concrete pouring process by improving the stiffness and stability of the formwork.

[0003] Currently, the reinforcement techniques for the outer formwork at the steel reinforced concrete beam-column joints mainly include support reinforcement method, steel frame reinforcement method, and prestressed tie rod reinforcement method, etc. The traditional support reinforcement method uses materials such as steel pipes and wooden squares to support and reinforce the formwork. This method has the characteristics of being simple and easy to implement; the steel frame reinforcement method improves the overall stiffness of the formwork by setting a steel frame outside the formwork. However, the above-mentioned construction joint reinforcement devices are difficult to adapt to the geometric shape changes in different joint areas, especially for the reinforcement effect of large-span structures with gradually changing cross-sections is not good, the applicability is poor, and the installation and disassembly processes of the reinforcement devices are cumbersome, making it difficult to meet the requirements of rapid construction.

[0004] Therefore, it is necessary to provide a reinforcement device for construction joints of large-span steel reinforced concrete beam-column structures to solve the above technical problems. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a reinforcement device for construction joints of large-span steel reinforced concrete beam-column structures.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a reinforcement device for construction joints of large-span steel reinforced concrete beam-column structures, including a support platform placed on the construction ground. Symmetrically installed on the top of the support platform and near its edge are support columns. At the center of the upper end face of the support platform is installed a main hydraulic push rod. The end face of the piston rod at the top of the main hydraulic push rod is fixedly connected to a U-shaped plate. Welded on the outer walls on both sides of the U-shaped plate are positioning ears, and the positioning ears are inserted into the outer wall of the support column. Installed on the top of the U-shaped plate is a reinforcement structure for externally fixing the construction joint of the steel reinforced concrete beam-column. The reinforcement structure includes an outer shell fixedly connected to the U-shaped plate, the bottom of the outer shell is symmetrically provided with oblique holes, a secondary hydraulic push rod is installed at the bottom of the outer shell, the top piston rod of the secondary hydraulic push rod passes through the outer shell, and an axle frame is fixedly installed on the end face of the top piston rod of the secondary hydraulic push rod, a driving gear is rotatably installed in the axle frame, and both sides of the driving gear are provided with fixing parts for double reinforcement of the steel concrete gradient section beam; The fixed part includes a limit plate fixedly installed on the inner wall of the outer shell in the vertical direction, a toothed T-block is sleeved on the outer side of the limit plate, and the toothed T-block is meshed with the driving gear, a cylindrical block is fixedly connected to the side of the toothed T-block away from the driving gear, a single-sided rack column is symmetrically welded to the outer wall of the cylindrical block, one side of the single-sided rack column is meshed with a gear shaft, the gear shaft is rotatably installed on the inner wall of the outer shell, a plurality of guide blocks are fixedly installed on the top inner wall of the outer shell, an adjusting arm is slidably installed on the bottom of the guide block, a tooth block is provided on the lower surface of the adjusting arm, and the tooth block is meshed with the gear shaft, one end of the adjusting arm is inserted in the inclined hole, and the two adjusting arms in the same fixed part are distributed in a 180° matrix with the center line of the cylindrical block as the axis, and a fixed plate is welded at the end of the adjusting arm.

[0007] Preferably, a circular hole is provided in the outer shell and between the two inclined holes, a stepped hole with a diameter decreasing from top to bottom is provided at the center of the inner part of the cylindrical block, a resistance rod is inserted in the stepped hole, one end of the resistance rod passes through the circular hole and is exposed to the outer shell, and a resistance plate is welded at the end of the resistance rod, a limiting disk is welded to the outer wall of the resistance rod, a supporting spring is installed on the outer wall of the resistance rod and between the limiting disk and the stepped hole, a positioning threaded rod is provided directly below the resistance rod, and the positioning threaded rod is installed at the bottom of the outer shell through threaded fitting.

[0008] Preferably, rectangular grooves are symmetrically formed on both side walls of the fixing plate, a rectangular block is slidably installed inside the rectangular groove, and a sleeve plate is welded to the outer side of the rectangular block.

[0009] Preferably, a steel ball is installed at the connection between the guide block and the adjustment arm, and the outer surface of the steel ball is coated with lubricating grease.

[0010] Preferably, the upper end surface of the abutment plate and the inner side surface of the sleeve plate are both frosted surfaces, and the surface roughness Ra of the frosted surfaces is between 5 μm and 15 μm.

[0011] Preferably, the top surface of any one of the adjustment arms is provided with scale lines, and the scale lines are printed with at least two colors of paint.

[0012] Preferably, the support platform is composed of a support plate and support feet, the support plate is provided for fixing and installing the support column and the main hydraulic push rod, and the support feet are formed by plugging a plurality of unit sections.

[0013] Preferably, a silica gel pad is embedded at the bottom of the unilateral rack column, and the thickness of the silica gel pad does not exceed 3 cm.

[0014] Compared with the related art, a construction joint reinforcement device for a long-span steel reinforced concrete beam-column structure provided by the present invention has the following beneficial effects: The present invention provides a construction joint reinforcement device for a long-span steel reinforced concrete beam-column structure. The secondary hydraulic push rod of the present invention can drive the reinforcement structure to work, so that while the two adjusting arms move, the top horizontal height of the fixed plate decreases, and at the same time, the two fixed plates move horizontally in the horizontal direction. And two groups of fixed plates are arranged on the reinforcement structure. When one group of the two fixed plates is closely attached to the outer formwork, the other group of the two fixed plates cannot move. When the secondary hydraulic push rod continues to work, the driving gear will rotate along the shaft frame, and continue to drive the toothed T-shaped block on one side of the other group to rise, so that the fixed plates at each position continue to move towards the outer formwork until they fit, and the reinforcement operation of the outer formwork of the variable cross-section steel reinforced concrete construction joint can be quickly completed, and the adaptability to complex joint shapes is effectively improved.

[0015] The present invention provides a construction joint reinforcement device for a long-span steel reinforced concrete beam-column structure. When the main hydraulic push rod of the present invention is started to work, the height of the contact plate rises synchronously. After the contact plate rises to contact the outer formwork, the horizontal height remains unchanged. After continuing to control the main hydraulic push rod to work, the stepped hole slides relative to the contact rod, and the support spring is compressed by the limit plate. When the fixed plates at multiple positions all contact the outside of the outer formwork, the construction worker rotates the positioning threaded rod so that its top abuts against the lower end surface of the contact rod to lock the position of the contact rod. This method can further quickly complete the support and reinforcement of the bottom outer formwork of the steel reinforced concrete beam construction joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional construction view of the overall structure of the present invention; Figure 2 is a side construction view of the overall structure of the present invention; Figure 3 is a three-dimensional view of a part of the structure of the present invention; Figure 4 is the present invention Figure 3 is a partially enlarged schematic view of area A in the present invention; Figure 5 is a partial cross-sectional view of the structure of the present invention; Figure 6 is a side view of the sleeve plate and other components of the present invention; Markings in the figure: 1. Support platform, 2. U-shaped plate, 3. Reinforcement structure, 4. Resistance rod, 5. Resistance plate, 11. Support column, 12. Main hydraulic push rod, 30. Round hole, 31. Outer shell, 32. Oblique hole, 33. Secondary hydraulic push rod, 34. Axle frame, 35. Driving gear, 36. Fixed part, 361. Limiting plate, 362. Toothed T-block, 363. Cylindrical block, 364. Single-sided rack column, 365. Gear shaft, 366. Guide block, 367. Adjusting arm, 368. Gear block, 369. Fixed plate, 360. Step hole, 41. Limiting plate, 42. Support spring, 43. Positioning threaded rod, 371. Rectangular groove, 372. Sleeve plate, 373. Rectangular block. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] In addition, the terms used below are defined based on the functions of the present invention and may differ depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0019] See also Figures 1-6 The invention discloses a large-span steel-concrete beam-column structure construction node reinforcement device, comprising a support platform 1 placed on the construction ground, support columns 11 are symmetrically installed on the top and near the edge of the support platform 1, and a main hydraulic push rod 12 is installed at the center of the upper end surface of the support platform 1; The support platform 1 is composed of a support plate and support feet, and the support plate is provided for the support column 11 and the main hydraulic push rod 12 to be fixedly installed. Figure 1 As shown, the support foot can be made of multiple unit sections plugged in, and can be adjusted as needed according to the actual height of the steel concrete beam to meet the reinforcement requirements of the nodes of steel concrete beams of different heights; The top piston rod end face of the main hydraulic push rod 12 is fixedly connected with a U-shaped plate 2. The main hydraulic push rod 12 can drive the U-shaped plate 2 to move in the vertical reverse direction. Positioning ears 21 are welded on the outer walls of both sides of the U-shaped plate 2, and the positioning ears 21 are plugged into the outer wall of the support column 11. When the U-shaped plate 2 moves in the vertical reverse direction, the positioning ears 21 are driven to slide on the outer wall of the support column 11, that is, the support column 11 and the positioning ears 21 cooperate to lock the circumferential movement of the U-shaped plate 2. The top of the U-shaped plate 2 is provided with a reinforcement structure 3 for fixing the steel-concrete beam-column construction node. The steel-concrete beam-column construction node includes a steel-concrete beam-column with a uniform width and a steel-concrete beam-column with a gradient width. Figure 1 Take the construction of the steel-concrete beam-column joint with a gradient cross-section as an example; The reinforcement structure 3 includes a housing 31 fixedly connected to the U-shaped plate 2. The bottom of the housing 31 is symmetrically provided with inclined holes 32, and the inner wall of the inclined holes 32 is a smooth surface; A secondary hydraulic push rod 33 is installed at the bottom of the housing 31. The top piston rod of the secondary hydraulic push rod 33 penetrates through the housing 31, and a shaft bracket 34 is fixedly installed on the end face of the top piston rod of the secondary hydraulic push rod 33. When the secondary hydraulic push rod 33 operates, it drives the shaft bracket 34 to move synchronously, and the moving direction of the shaft bracket 34 is the vertical reverse direction; A driving gear 35 is rotatably installed inside the shaft bracket 34. The driving gear 35 can rotate relative to the shaft bracket 34. Fixed parts 36 for double reinforcement of the steel-concrete tapered cross-section beam are arranged on both sides of the driving gear 35; The fixed part 36 includes a limiting plate 361 fixedly installed on the inner wall of the housing 31 in the vertical direction. Generally, the limiting plate 361 is fixedly connected to the inner wall of the housing 31 by bolts; A toothed T-shaped block 362 is sleeved outside the limiting plate 361, and the toothed T-shaped block 362 meshes with the driving gear 35. A silica gel pad is embedded at the bottom of the unilateral rack column 364. The thickness of the silica gel pad does not exceed 3 cm. In the initial state (that is, when the secondary hydraulic push rod 33 is not working), the silica gel pad at the bottom of the toothed T-shaped block 362 abuts against the inner wall of the bottom of the housing 31, and this soft contact reduces the wear on the inner wall of the housing 31; One side of the toothed T-shaped block 362 away from the driving gear 35 is fixedly connected with a cylindrical block 363. Unilateral rack columns 364 are symmetrically welded on the outer surface of the cylindrical block 363. As Figure 4 shown, there is a certain working gap between the cylindrical block 363 and the toothed T-shaped block 362, and the unilateral rack columns 364 and the cylindrical block 363 move together with the toothed T-shaped block 362, and the movement trajectories are the same; One side of the unilateral rack column 364 is meshed with a gear shaft 365. The gear shaft 365 is rotatably installed on the inner wall of the housing 31, and a lubricating oil is coated at the connection between the gear shaft 365 and the inner wall of the housing 31; A plurality of guide blocks 366 are fixedly installed on the inner wall of the top of the housing 31. An adjusting arm 367 is slidably installed at the bottom of the guide block 366. The cross-section of the guide block 366 can be a combined cross-section of a semi-circle and a square. The specific shape can be referred to Figure 4 shown, that is, the adjusting arm 367 can slide along the guide block 366 and does not fall off along the connection; Tooth blocks 368 are arranged on the lower surface of the adjusting arm 367, and the tooth blocks 368 mesh with the gear shaft 365. One end of the adjusting arm 367 penetrates into the inclined hole 32, and a sealing piece is installed at the gap between the adjusting arm 367 and the inclined hole 32. The sealing piece seals the gap between the two and does not affect the relative movement of the adjusting arm 367 relative to the inclined hole 32; Refer to Figures 1-3In the same fixed part 36, the two adjusting arms 367 are distributed in a 180° matrix with the center line of the cylindrical block 363 as the axis. A fixing plate 369 is welded to the end of the adjusting arm 367. During specific operation, first, a support platform 1 is built according to the height of the steel reinforced concrete beam, and the main hydraulic push rod 12 is controlled to work, driving the U-shaped plate 2 to rise, so that the fixing plates 369 tend to be equidistantly located on both sides of the outer formwork of the steel reinforced concrete joint. This state can be referred to Figure 2 as shown; After the above steps are completed, the secondary hydraulic push rod 33 is controlled to work. The secondary hydraulic push rod 33 drives the shaft frame 34 and the driving gear 35 to rise. The driving gear 35 pushes the toothed T-shaped blocks 362 on both sides to rise along the limiting plate 361. After the single-sided rack column 364 rises together with the T-shaped block 362, it drives the gear shaft 365 to rotate in the outer housing 31. After the gear shaft 365 rotates, it meshes with the toothed block 368, thereby driving the adjusting arm 367 to move on the guiding block 366. The moving direction can be as shown in Figure 2 the M direction in. While the two adjusting arms 367 move along the M direction, they drive the top horizontal height of the fixing plate 369 to decrease. At the same time, the two fixing plates 369 move horizontally in the N direction in Figure 2 (that is, the distance between the two fixing plates 369 decreases). Two groups of fixing plates 369 are arranged on the same reinforcement structure 3 (distinguished by C and D as shown in Figure 3 ). When the two fixing plates 369 in group C are close to the outer formwork, the two fixing plates 369 in group C cannot move. When the secondary hydraulic push rod 33 continues to work, the driving gear 35 will rotate along the shaft frame 34, and continue to drive the toothed T-shaped block 362 on one side of group D to rise, so that the two fixing plates 369 in group D continue to move towards the outer formwork until they fit with it, and the reinforcement operation of the outer formwork of the variable cross-section steel reinforced concrete construction joint can be quickly completed. This method has a wide range of applications; Similarly, when constructing a wide-section steel reinforced concrete beam-column, the secondary hydraulic push rod 33 is also started to work to achieve this. During this process, the driving gear 35 does not rotate relative to the shaft frame 34. If the difference in the distance values between the two fixing plates 369 and the outer formwork is large, pads can be added to the gap between the fixing plates 369 and the outer formwork; The shape of the outer housing 31 is not limited to the square shown in the figure. For example, on this basis, one side of the outer housing 31 facing the end of the adjusting arm 367 can be set to be convex, increasing the movable range of the adjusting arm 367.

[0020] In another embodiment, a round hole 30 is opened in the outer housing 31 and between the two inclined holes 32. A stepped hole 360 with a decreasing diameter from top to bottom is opened at the central position inside the cylindrical block 363. A resisting rod 4 is inserted into the stepped hole 360. One end of the resisting rod 4 passes through the round hole 30 and extends out of the outer housing 31, and a resisting plate 5 is welded to the end of the resisting rod 4. The resisting plate 5 is used to support and reinforce the bottom of the lower formwork at the steel reinforced concrete construction joint; The outer wall of the abutment rod 4 is welded with a limit plate 41, and a support spring 42 is installed on the outer wall of the abutment rod 4 and between the limit plate 41 and the stepped hole 360. Under normal conditions, the support spring 42 pushes the upper end surface of the limit plate 41 to be close to the inner top of the outer shell 31, and at this time, the leakage length of the abutment rod 4 relative to the circular hole 30 is the largest; A positioning threaded rod 43 is provided directly below the resistance rod 4. The positioning threaded rod 43 is installed at the bottom of the outer shell 31 through threaded cooperation. When the main hydraulic push rod 12 is started, the height of the resistance plate 5 rises synchronously. After the resistance plate 5 rises to contact with the outer formwork, the horizontal height remains unchanged. After the main hydraulic push rod 12 continues to be controlled to work, the stepped hole 360 ​​slides relative to the resistance rod 4, and the supporting spring 42 is compressed by the limiting plate 41. When the fixed plates 369 at multiple positions all resist the outside of the outer formwork, the construction personnel rotate the positioning threaded rod 43 so that its top is close to the lower end face of the resistance rod 4 to lock the position of the resistance rod 4. This method can further quickly complete the support and reinforcement of the outer formwork at the bottom of the steel concrete beam construction node.

[0021] like Figures 1-6 As shown, rectangular grooves 371 are symmetrically provided on both side walls of the fixed plate 369, and a rectangular block 373 is slidably installed inside the rectangular groove 371. A sleeve plate 372 is welded to the outer side of the rectangular block 373. In this state, the sleeve plate 372 is in direct contact with the outer template to increase the contact area with the outer template. The sleeve plate 372 can also slide along the fixed plate 369 to adjust the reinforcement area.

[0022] At the same time, a steel ball is installed at the connection between the guide block 366 and the adjustment arm 367, and the outer surface of the steel ball is coated with lubricating grease to reduce the sliding friction of the adjustment arm 367 relative to the guide block 366.

[0023] Furthermore, the upper end surface of the abutment plate 5 and the inner side surface of the sleeve plate 372 are both frosted surfaces to increase the friction between the outer template, and the surface roughness Ra of the frosted surface is between 5μm and 15μm, which can provide sufficient friction, reinforce stability and wear resistance.

[0024] The top surface of any one of the adjustment arms 367 is provided with scale lines, and the scale lines are printed with at least two colors of paint. When the adjustment arm 367 is in the initial state, the intersection of the two color scale lines is flush with the upper end surface of the outer shell 31. At this time, when the construction personnel control the work of the present invention, they can use the position of the visual scale lines to determine whether the adjustment arm 367 is reset, which is more convenient and quick.

[0025] The above are only embodiments of the present invention, and do not thus limit the patent scope of the present invention. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A large-span steel-concrete beam-column structure construction node reinforcement device, comprising a support platform (1) placed on the construction ground, characterized in that: A support column (11) is symmetrically installed on the top of the support platform (1) and near its edge, a main hydraulic push rod (12) is installed at a central position on the upper end surface of the support platform (1), and the top piston rod end surface of the main hydraulic push rod (12) is fixedly connected to a U-shaped plate (2), positioning ears (21) are welded to the outer walls of both sides of the U-shaped plate (2), and the positioning ears (21) are plugged into the outer wall of the support column (11), and a reinforcement structure (3) for externally fixing the steel concrete beam-column construction node is installed on the top of the U-shaped plate (2); The reinforcement structure (3) comprises an outer shell (31) fixedly connected to the U-shaped plate (2), the bottom of the outer shell (31) is symmetrically provided with oblique holes (32), a secondary hydraulic push rod (33) is installed at the bottom of the outer shell (31), the top piston rod of the secondary hydraulic push rod (33) penetrates the outer shell (31), and an axle frame (34) is fixedly installed on the end surface of the top piston rod of the secondary hydraulic push rod (33), a driving gear (35) is rotatably installed in the axle frame (34), and fixing parts (36) for double reinforcement of the steel concrete gradient cross-section beam are arranged on both sides of the driving gear (35); The fixing portion (36) comprises a limit plate (361) fixedly mounted on the inner wall of the outer shell (31) in a vertical direction, a toothed T-shaped block (362) is sleeved on the outer side of the limit plate (361), and the toothed T-shaped block (362) is meshed with the driving gear (35), a cylindrical block (363) is fixedly connected to the side of the toothed T-shaped block (362) facing away from the driving gear (35), a single-sided rack column (364) is symmetrically welded to the outer wall of the cylindrical block (363), one side of the single-sided rack column (364) is meshed with a gear shaft (365), and the gear shaft (365) is rotatably mounted on the outer shell The outer shell (31) is provided with an inner wall of the cylindrical block (31), a plurality of guide blocks (366) are fixedly mounted on the top inner wall of the outer shell (31), an adjusting arm (367) is slidably mounted on the bottom of the guide block (366), a tooth block (368) is arranged on the lower surface of the adjusting arm (367), and the tooth block (368) is meshed with the gear shaft (365), one end of the adjusting arm (367) is inserted into the inclined hole (32), and the two adjusting arms (367) in the same fixing portion (36) are arranged in a 180° matrix with the center line of the cylindrical block (363) as the axis, and a fixing plate (369) is welded to the end of the adjusting arm (367).

2. A large-span steel-concrete beam-column structure construction node reinforcement device according to claim 1, characterized in that: A circular hole (30) is provided in the outer shell (31) and between the two inclined holes (32); a stepped hole (360) whose diameter decreases from top to bottom is provided at a central position inside the cylindrical block (363); a resisting rod (4) is inserted into the stepped hole (360); one end of the resisting rod (4) passes through the circular hole (30) and is exposed to the outer shell (31); a resisting plate (5) is welded to the end of the resisting rod (4); a limiting disk (41) is welded to the outer wall of the resisting rod (4); a supporting spring (42) is installed on the outer wall of the resisting rod (4) and between the limiting disk (41) and the stepped hole (360); a positioning threaded rod (43) is provided directly below the resisting rod (4); the positioning threaded rod (43) is installed at the bottom of the outer shell (31) by threaded engagement.

3. The large-span steel-concrete beam-column structure construction node reinforcement device according to claim 1 is characterized in that: Rectangular grooves (371) are symmetrically formed on both side walls of the fixing plate (369), a rectangular block (373) is slidably mounted inside the rectangular groove (371), and a sleeve plate (372) is welded to the outside of the rectangular block (373).

4. The large-span steel-concrete beam-column structure construction node reinforcement device according to claim 1 is characterized in that: A steel ball is installed at the connection between the guide block (366) and the adjustment arm (367), and the outer surface of the steel ball is coated with lubricating grease.

5. The large-span steel-concrete beam-column structure construction node reinforcement device according to claim 3 is characterized in that: The upper end surface of the abutment plate (5) and the inner side surface of the sleeve plate (372) are both frosted surfaces, and the surface roughness Ra of the frosted surfaces is between 5 μm and 15 μm.

6. The large-span steel-concrete beam-column structure construction node reinforcement device according to claim 1 is characterized in that: The top surface of any one of the adjustment arms (367) is provided with scale lines, and the scale lines are printed with at least two colors of paint.

7. The large-span steel-concrete beam-column structure construction node reinforcement device according to claim 1 is characterized in that: The support platform (1) is composed of a support plate and support feet. The support plate is used to fix and install a support column (11) and a main hydraulic push rod (12). The support feet are formed by plugging together a plurality of unit sections.

8. The device for reinforcing construction nodes of a large-span steel-concrete beam-column structure according to claim 1 is characterized in that: A silicone pad is embedded in the bottom of the single-sided rack column (364), and the thickness of the silicone pad does not exceed 3 cm.

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