A kind of existing structure load-bearing reinforcement steel beam and construction method

Abstract

The present invention discloses a reinforcement steel beam for bearing an existing structure and a construction method, which belongs to the field of building construction technology, comprises an existing structure column and an existing structure beam arranged between adjacent existing structure columns, and is characterized in that: a horizontally arranged reinforcement steel beam is arranged on the existing structure beam, and mounting structures are detachably connected between both ends of the reinforcement steel beam and the existing structure column; a plurality of U-shaped clamps are arranged at the lower end of the existing structure beam, and the clamps are used to cover the existing structure beam, and reinforcing connecting plates detachably connected to corresponding clamps are arranged on both sides of the lower flange plate of the reinforcement steel beam; a groove is provided at the bottom of the reinforcement steel beam, and a support structure is provided in the groove to counteract the existing structure beam, and the height of the support structure is adjustable; the purpose is to solve the problem that the medium-shaped steel and the existing structure beam in the existing reinforcement method can only transmit pressure but cannot achieve coordinated force.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and particularly relates to a load-bearing reinforcement steel beam for an existing structure and a construction method. Background Art

[0002] During urban renewal construction, construction loads often exceed the permanent load of the structure, necessitating temporary reinforcement of the existing structure to facilitate operations such as parking construction machinery and rigging arrangements. Current reinforcement methods often involve erecting independent temporary structures, but this is difficult to implement due to site constraints or existing structural limitations. Furthermore, existing reinforcement methods involve directly laying steel sections on existing structural beams, but this only transfers pressure between the steel sections and the existing beams, failing to achieve synergistic load-bearing. Summary of the Invention

[0003] In view of this, the present invention discloses a reinforcement steel beam for existing structures and a construction method, which aims to solve the problem that the existing reinforcement method can only transmit pressure between the medium-sized steel and the existing structural beams but cannot achieve coordinated force.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A reinforcement steel beam for bearing an existing structure, comprising an existing structural column and an existing structural beam arranged between adjacent existing structural columns, characterized in that: a horizontally arranged reinforcement steel beam is arranged on the existing structural beam, and mounting structures are detachably connected between both ends of the reinforcement steel beam and the existing structural columns; a plurality of U-shaped clamps are arranged at the lower end of the existing structural beam, and the clamps are used to cover the existing structural beam, and reinforcing connecting plates detachably connected to corresponding clamps are arranged on both sides of the lower flange plate of the reinforcement steel beam; a groove is provided at the bottom of the reinforcement steel beam, and a support structure is provided in the groove to counteract the existing structural beam, and the height of the support structure is adjustable.

[0006] In this solution, the reinforcing steel beam is stably connected to the existing structural beam through the clamp and the installation structure, and then the height of the supporting structure is adjusted so that the two ends of the supporting structure are respectively against the reinforcing steel beam and the existing structural beam. Even if the existing structural beam is bent, the reinforcing steel beam can be tightly fitted and connected to the existing structural beam, so that the reinforcing steel beam and the existing structural beam can be synergistically stressed. At the same time, it can also avoid metal fatigue caused by multiple bending and deformation recovery of the existing structural beam due to load changes, thereby extending the service life of the existing structural beam.

[0007] Furthermore, slide grooves are provided on both sides of the groove, and the supporting structure includes several support shafts horizontally and perpendicular to the reinforcing steel beams, both ends of the support shafts extend into corresponding slide grooves and are slidably connected thereto, two support plates are hinged on the support shafts, and a clamping block that abuts against the existing structural beam is provided between adjacent support shafts, and the end of the support plate is hinged to the corresponding clamping block; an adjusting shaft parallel to the reinforcing steel beam is rotatably connected in the groove, and a connecting hole for the adjusting shaft to pass through is provided on the support shaft, and a number of positioning blocks are provided on the inner wall of the connecting hole, and a number of slide grooves parallel to the adjusting shaft are provided on the adjusting shaft, and the positioning blocks extend into the corresponding slide grooves, and a number of positioning grooves for accommodating the positioning blocks are provided on one side of the slide groove.

[0008] In this solution, when hoisting the reinforced steel beam, the adjusting shaft is rotated to make the positioning block slide from the positioning groove into the slide groove; after the reinforced steel beam is hoisted into place, the adjusting shaft is rotated in the opposite direction to make the positioning hole slide from the slide groove into the positioning groove, the support shaft is locked, and then the clamping block is locked through the support plate, and the clamping block and the clamp are used to form a two-way clamping and fixing of the reinforced steel beam in the upper and lower directions, so that the reinforced steel beam and the existing structural beam are stably fitted and connected, and then the force is synergistically exerted, thereby improving the load capacity of the existing structural beam.

[0009] Furthermore, the mounting structure includes supports that are detachably connected to the tops of both ends of the reinforcing steel beam, and the supports are rotatably connected on both sides with rotating shafts that are horizontally and perpendicular to the reinforcing steel beam, and the rotating shafts are slidably sleeved with connecting frames that are horizontally and perpendicular to them, and the connecting frames are detachably connected with latches, and the connecting frames are slidably connected with load-bearing sleeves, and the side walls of the load-bearing sleeves are rotatably provided with fixing plates, and one end of the load-bearing sleeves is rotatably connected with adjustment sleeves that are threadedly connected to the connecting frames; two groups of support rods are connected with ball joints on the supports, and the ends of the support rods are coaxially and slidably provided with adjustment rods connected to the ball joints of the connecting frame, and locking pins are provided between the adjustment rods and the support rods.

[0010] After the reinforcement steel beam is hoisted into place, remove the locking pin and the latch pin, rotate the rotating shaft and slide the connecting frame so that the corresponding two fixed plates on the same connecting frame form a front and rear clamp on the existing structural column; then rotate the adjusting sleeve, and the adjusting sleeve drives the load-bearing sleeve to move until the fixed plate fits the existing structural column; then reset the latch pin and the locking pin, and use the support rod and the adjusting rod to form a stable support and limit for the connecting frame, thereby completing the locking of the reinforcement steel beam; use the installation structure to form a stable connection between the reinforcement steel beam and the existing structural column, and then transfer a certain force on the reinforcement steel beam to the existing structural column, further improving the load capacity of the existing structural beam and the reinforcement steel beam.

[0011] Furthermore, connecting seats are provided at both ends of the groove, and both ends of the support shaft pass through the connecting seats and are rotatably connected thereto.

[0012] Furthermore, the support plate and the support shaft are both provided with torsion springs.

[0013] Furthermore, a frustum is fixed on the rotating shaft and abuts against the support.

[0014] A construction method for reinforcing steel beams for carrying existing structures comprises the following steps:

[0015] 1) Hoisting the reinforcement steel beam: Install the corresponding specification of reinforcement connecting plates on both sides of the lower flange plate of the reinforcement steel beam; rotate the adjustment shaft to slide the positioning block from the positioning slot into the slide slot; then hoist the reinforcement steel beam to the top of the existing structural beam and adjust the position of the reinforcement steel beam to keep it parallel to the existing structural beam;

[0016] 2) Install the clamp: Install the clamp on the reinforcing connecting plate so that the clamp engages with the existing structural beam. At this time, the clamping block is squeezed by the existing structural beam and pushes the support shaft to move accordingly through the support plate;

[0017] 3) Adjust the support structure: At this time, rotate the adjustment shaft in the opposite direction to make the positioning hole slide from the slide groove into the positioning groove, lock the support shaft, and then lock the clamping block through the support plate. Use the clamping block and the clamp to form a two-way clamping and fixing of the reinforcement steel beam in the upper and lower directions, so that the reinforcement steel beam and the existing structural beam can be coordinated in force;

[0018] 4) Lock the reinforced steel beam: remove the locking pin and the latch, rotate the rotating shaft and slide the connecting frame so that the two corresponding fixed plates on the same connecting frame clamp the existing structural column, then rotate the adjusting sleeve, and the adjusting sleeve drives the load-bearing sleeve to move until the fixed plate fits the existing structural column; then reset the latch and the locking pin, and use the support rod and the adjusting rod to form a stable support and limit for the connecting frame, thereby completing the locking of the reinforced steel beam.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0021] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 A longitudinal cross-sectional view of an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0024] Figure 4 Schematic diagram of the support structure in an embodiment of the present invention.

[0025] The markings in the accompanying drawings are as follows: existing structural column 1, existing structural beam 2, reinforcement steel beam 3, clamp 4, reinforcement connecting plate 5, support shaft 6, support plate 7, tightening block 8, adjustment shaft 9, positioning block 10, slide groove 11, positioning groove 12, support 13, rotating shaft 14, connecting frame 15, load-bearing sleeve 16, fixing plate 17, adjusting sleeve 18, support rod 19, adjusting rod 20, connecting seat 21, and round table 22. DETAILED DESCRIPTION

[0026] like Figures 1 to 4 As shown:

[0027] A reinforcement steel beam 3 for bearing an existing structure comprises an existing structural column 1 and an existing structural beam 2 arranged between adjacent existing structural columns 1, and is characterized in that: a horizontally arranged reinforcement steel beam 3 is arranged on the existing structural beam 2, and both ends of the reinforcement steel beam 3 and the existing structural column 1 are detachably connected with an installation structure; a plurality of U-shaped clamps 4 are provided at the lower end of the existing structural beam 2, and the clamps 4 are used to cover the existing structural beam 2, and reinforcement connecting plates 5 are provided on both sides of the lower flange plate of the reinforcement steel beam 3, and the ends of the clamps 4 are detachably connected to the corresponding reinforcement connecting plates 5 by bolts (not shown in the figure); a groove is provided at the bottom of the reinforcement steel beam 3, and a support structure is provided in the groove to counteract the existing structural beam 2, and the height of the support structure is adjustable.

[0028] In this solution, the reinforcing steel beam 3 is stably connected to the existing structural beam 2 through the clamp 4 and the installation structure, and then the height of the supporting structure is adjusted so that the two ends of the supporting structure are respectively against the reinforcing steel beam 3 and the existing structural beam 2. Even if the existing structural beam 2 is bent, the reinforcing steel beam 3 can be tightly fitted and connected to the existing structural beam 2, so that the reinforcing steel beam 3 and the existing structural beam 2 can be coordinated in force; at the same time, it can also avoid the metal fatigue caused by multiple bending and deformation recovery of the existing structural beam 2 due to load changes, thereby extending the service life of the existing structural beam 2.

[0029] In this embodiment, slide grooves 11 are provided on both sides of the groove, and the supporting structure includes several support shafts 6 horizontally and perpendicular to the reinforcing steel beam 3. Both ends of the support shaft 6 extend into the corresponding slide grooves 11 and are slidably connected thereto. Two support plates 7 are hinged on the support shaft 6, and a tightening block 8 that abuts against the existing structural beam 2 is provided between adjacent support shafts 6. The ends of the support plates 7 are hinged to the corresponding tightening blocks 8; an adjusting shaft 9 parallel to the reinforcing steel beam 3 is rotatably connected in the groove, and a connecting hole for the adjusting shaft 9 to pass through is provided on the support shaft 6. A number of positioning blocks 10 are provided on the inner wall of the connecting hole, and a number of slide grooves 11 parallel to the adjusting shaft 9 are provided on the adjusting shaft 9. The positioning blocks 10 extend into the corresponding slide grooves 11, and a number of positioning grooves 12 for accommodating the positioning blocks 10 are provided on one side of the slide groove 11.

[0030] In this solution, when hoisting the reinforcing steel beam 3, the adjusting shaft 9 is rotated to make the positioning block 10 slide from the positioning groove 12 into the slide groove 11; after the reinforcing steel beam 3 is hoisted into place, the adjusting shaft 9 is rotated in the opposite direction to make the positioning hole slide from the slide groove 11 into the positioning groove 12, locking the support shaft 6, and then locking the tightening block 8 through the support plate 7, and using the tightening block 8 and the clamp 4 to form a two-way clamping fixation of the reinforcing steel beam 3 in the upper and lower directions, so that the reinforcing steel beam 3 and the existing structural beam 2 are stably fitted and connected, and then synergistically bear the force, thereby improving the load capacity of the existing structural beam 2.

[0031] In this embodiment, the mounting structure includes a support 13 that is detachably connected to the top of the two ends of the reinforcing steel beam 3, and the two sides of the support 13 are rotatably connected with a rotating shaft 14 that is horizontally perpendicular to the reinforcing steel beam 3, and the rotating shaft 14 is slidably sleeved with a connecting frame 15 that is horizontally perpendicular to it, and a pin is detachably connected between the connecting frame 15 and the rotating shaft 14 (conventional technical means, so not drawn in the figure), and the connecting frame 15 is slidably connected with a load-bearing sleeve 16, and a fixing plate 17 is rotatably provided on the side wall of the load-bearing sleeve 16, and one end of the load-bearing sleeve 16 is rotatably connected to an adjusting sleeve 18 threadedly connected to the connecting frame 15; two groups of support rods 19 are ball-hinged on the support 13, and the ends of the support rods 19 are coaxially slidably provided with adjusting rods 20 connected to the connecting frame 15 with a ball hinge, and a locking pin is provided between the adjusting rod 20 and the support rod 19 (conventional technical means, so not drawn in the figure).

[0032] After the reinforcing steel beam 3 is hoisted into place, the locking pin and the latch are removed, the rotating shaft 14 is rotated and the connecting frame 15 is slid so that the two corresponding fixing plates 17 on the same connecting frame 15 form a front and rear clamping for the existing structural column 1; then the adjusting sleeve 18 is rotated, and the adjusting sleeve 18 drives the load-bearing sleeve 16 to move until the fixing plate 17 is in contact with the existing structural column 1; then the latch and the locking pin are reset, and the support rod 19 and the adjusting rod 20 are used to form a stable support and limit for the connecting frame 15, thereby completing the locking of the reinforcing steel beam 3; the mounting structure is used to form a stable connection between the reinforcing steel beam 3 and the existing structural column 1, thereby transmitting a certain force on the reinforcing steel beam 3 to the existing structural column 1, further improving the load capacity of the existing structural beam 2 and the reinforcing steel beam 3.

[0033] In this embodiment, connecting seats 21 are welded and fixed at both ends of the groove, and both ends of the support shaft 6 pass through the connecting seats 21 and are rotatably connected thereto; the connecting seats 21 support the support shaft 6.

[0034] In this embodiment, both the support plate 7 and the support shaft 6 are provided with torsion springs.

[0035] A torsion spring is provided to apply a downward rotational force to the support plate 7 , so that the support plate 7 drives the pressing block 8 to fit tightly with the existing structural beam 2 .

[0036] In this embodiment, a truncated cone 22 is welded and fixed to the rotating shaft 14 and abuts against the support 13 .

[0037] The truncated cone 22 is provided to improve the shear resistance of the rotating shaft 14 and prevent the rotating shaft 14 from breaking.

[0038] A construction method for reinforcing a steel beam 3 for carrying an existing structure comprises the following steps:

[0039] 1) Hoisting the reinforcement steel beam 3: Install the corresponding specification reinforcement connecting plates 5 on both sides of the lower flange plate of the reinforcement steel beam 3; Rotate the adjustment shaft 9 to slide the positioning block 10 from the positioning groove 12 into the slide groove 11; Then hoist the reinforcement steel beam 3 to the top of the existing structural beam 2, and adjust the position of the reinforcement steel beam 3 so that the reinforcement steel beam 3 remains parallel to the existing structural beam 2;

[0040] 2) Install the clamp 4: Install the clamp 4 on the reinforcing connecting plate 5 so that the clamp 4 engages with the existing structural beam 2. At this time, the pressing block 8 is squeezed by the existing structural beam 2 and pushes the support shaft 6 to move accordingly through the support plate 7;

[0041] 3) Adjust the support structure: At this time, rotate the adjustment shaft 9 in the opposite direction to slide the positioning hole from the slide groove 11 into the positioning groove 12, lock the support shaft 6, and then lock the clamping block 8 through the support plate 7. The clamping block 8 and the clamp 4 form a two-way clamping and fixing of the reinforcement steel beam 3 in the upper and lower directions, so that the reinforcement steel beam 3 and the existing structural beam 2 are coordinated in force;

[0042] 4) Lock the reinforcing steel beam 3: Remove the locking pin and the latch, rotate the rotating shaft 14 and slide the connecting frame 15 so that the two corresponding fixing plates 17 on the same connecting frame 15 clamp the existing structural column 1, and then rotate the adjusting sleeve 18. The adjusting sleeve 18 drives the load-bearing sleeve 16 to move until the fixing plate 17 fits the existing structural column 1; then reset the latch and the locking pin, and use the support rod 19 and the adjusting rod 20 to form a stable support and limit for the connecting frame 15, thereby completing the locking of the reinforcing steel beam 3.

[0043] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A steel beam for reinforcing an existing structure, comprising an existing structural column and an existing structural beam disposed between adjacent existing structural columns, characterized in that: The crossbow is fixedly mounted on the support frame, and the crossbow is fixedly mounted on the support frame, and the crossbow is fixedly mounted on the support frame.

7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod being connected the said linking rod to the said linking rod and said adjusting base.

2. The existing structure load-bearing reinforcement steel beam according to claim 1, characterized in that: Connecting seats are provided at both ends of the groove, and both ends of the support shaft pass through the connecting seats and are rotatably connected thereto.

3. The existing structure load-bearing reinforcement steel beam according to claim 2, characterized in that: The support plate and the support shaft are both provided with torsion springs.

4. The existing structure load-bearing reinforcement steel beam according to claim 3, characterized in that: A frustum abutting against the support is fixed on the rotating shaft.

5. The construction method of the existing structure load-bearing reinforcement steel beam according to claim 4 is characterized in that: The steps include: 1) Hoisting the reinforcement steel beam: Install the corresponding specification of reinforcement connecting plates on both sides of the lower flange plate of the reinforcement steel beam; rotate the adjustment shaft to slide the positioning block from the positioning slot into the slide slot; then hoist the reinforcement steel beam to the top of the existing structural beam and adjust the position of the reinforcement steel beam to keep it parallel to the existing structural beam; 2) Install the clamp: Install the clamp on the reinforcing connecting plate so that the clamp engages with the existing structural beam. At this time, the clamping block is squeezed by the existing structural beam and pushes the support shaft to move accordingly through the support plate; 3) Adjust the support structure: At this time, rotate the adjustment shaft in the opposite direction to make the positioning hole slide from the slide groove into the positioning groove, lock the support shaft, and then lock the clamping block through the support plate. Use the clamping block and the clamp to form a two-way clamping and fixing of the reinforcement steel beam in the upper and lower directions, so that the reinforcement steel beam and the existing structural beam can be coordinated in force; 4) Lock the reinforced steel beam: remove the locking pin and the latch, rotate the rotating shaft and slide the connecting frame so that the two corresponding fixed plates on the same connecting frame clamp the existing structural column, then rotate the adjusting sleeve, and the adjusting sleeve drives the load-bearing sleeve to move until the fixed plate fits the existing structural column; then reset the latch and the locking pin, and use the support rod and the adjusting rod to form a stable support and limit for the connecting frame, thereby completing the locking of the reinforced steel beam.

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