Existing structure bearing reinforcing steel beam and construction method

Abstract

The invention discloses an existing structure bearing reinforcing steel beam and a construction method, and belongs to the technical field of building construction.The existing structure bearing reinforcing steel beam comprises existing structure columns and existing structure beams arranged between the adjacent existing structure columns, and is characterized in that the existing structure beams are provided with horizontally-arranged reinforcing steel beams; mounting structures are detachably connected between the two ends of the reinforcing steel beam and the existing structural columns. A plurality of U-shaped hoops are arranged at the lower end of the existing structural beam and used for wrapping the existing structural beam, and reinforcing connecting plates detachably connected with the corresponding hoops are arranged on the two sides of a lower flange plate of the reinforcing steel beam. A groove is formed in the bottom of the reinforcing steel beam, a supporting structure abutting against an existing structural beam is arranged in the groove, and the height of the supporting structure is adjustable. The problem that in an existing reinforcing mode, only pressure can be transmitted between profile steel and an existing structural beam, and cooperative stress cannot be achieved is solved.

Description

Technical Field

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

[0002] During the urban renewal construction process, the construction load exceeds the permanent load of the structure, and the existing structure needs to be temporarily reinforced during the construction process to facilitate the parking of construction machinery, the arrangement of slings and other construction operations. The current reinforcement method often builds an independent temporary structure, but it is difficult to implement due to site restrictions or existing structural restrictions; in addition, the existing reinforcement method is to directly lay steel sections on the existing structural beams, but the steel sections and the existing structural beams can only transfer pressure and cannot achieve coordinated force. Summary of the invention

[0003] In view of this, the present invention discloses an existing structure load-bearing reinforcement steel beam 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 beam 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 column; 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 that is against the existing structural beam is provided in the groove, 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 a plurality of support shafts horizontally and perpendicular to the reinforcing steel beams, both ends of the support shafts extend into corresponding slide grooves for sliding connection therewith, two support plates are hinged on the support shafts, and clamping blocks that abut against the existing structural beams are provided between adjacent support shafts, and the ends of the support plates are hinged to the corresponding clamping blocks; 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 plurality of positioning blocks are provided on the inner wall of the connecting hole, and a plurality 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 plurality 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 reinforcing steel beam is clamped and fixed in an upper and lower bidirectional manner by the clamping block and the clamp, 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 rotation axes that are horizontally and perpendicular to the reinforcing steel beam are rotatably connected to the supports on both sides, and connecting frames that are slidably sleeved are horizontally and perpendicular to the reinforcing steel beam. A latch is detachably connected between the connecting frame and the rotation axis, and a load-bearing sleeve is slidably connected to the connecting frame, and a fixing plate is rotatably provided on the side wall of the load-bearing sleeve, and one end of the load-bearing sleeve is rotatably connected to an adjusting sleeve that is threadedly connected to the connecting frame; two groups of support rods are connected to ball joints on the supports, and adjusting rods that are coaxially and slidably connected to the ball joints of the connecting frame are provided at the ends of the support rods, and locking pins are provided between the adjusting rods and the support rods.

[0010] After the reinforcing 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 for 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 reinforcing steel beam; use the installation structure to form a stable connection between the reinforcing steel beam and the existing structural column, and then transfer a certain force on the reinforcing steel beam to the existing structural column, thereby further improving the load capacity of the existing structural beam and the reinforcing 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 truncated table abutting against the support is fixed on the rotating shaft.

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

[0015] 1) Hoisting the reinforcement steel beam: Install the corresponding specifications of the reinforcement connecting plates on both sides of the lower flange plate of the reinforcement steel beam; rotate the adjustment shaft to make the positioning block slide from the positioning groove into the slide groove; 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 the reinforcement steel beam parallel to the existing structural beam;

[0016] 2) Install the clamp: install the clamp on the reinforced connecting plate so that the clamp is engaged with the existing structural beam. At this time, the clamp block is squeezed by the existing structural beam and pushes the support shaft to move correspondingly 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, and use the clamping block and the clamp to clamp the reinforcement steel beam in an upper and lower bidirectional manner, so that the reinforcement steel beam and the existing structural beam are subjected to force in coordination;

[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 corresponding two fixed plates on the same connecting frame clamp the existing structural column, and 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 may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 It is a structural schematic diagram 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 The enlarged 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 attached drawings are as follows: existing structural column 1, existing structural beam 2, reinforced steel beam 3, clamp 4, reinforced connecting plate 5, support shaft 6, support plate 7, tightening block 8, adjusting 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 bearing an existing structure, comprising an existing structure column 1 and an existing structure beam 2 arranged between adjacent existing structure columns 1, characterized in that: a horizontally arranged reinforcement steel beam 3 is arranged on the existing structure beam 2, and installation structures are detachably connected between both ends of the reinforcement steel beam 3 and the existing structure column 1; a plurality of U-shaped clamps 4 are arranged at the lower end of the existing structure beam 2, and the clamps 4 are used to cover the existing structure beam 2, and reinforcement connecting plates 5 are arranged 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 opened at the bottom of the reinforcement steel beam 3, and a support structure that abuts against the existing structure beam 2 is arranged in the groove, and the height of the support structure is adjustable.

[0028] In this solution, the reinforcing steel beam 3 and the existing structural beam 2 are stably connected by 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 synergistically stressed; at the same time, it can also avoid metal fatigue caused by multiple bending and deformation recovery of the existing structural beam 2 due to load changes, thereby enhancing 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 a plurality of support shafts 6 horizontally and perpendicular to the reinforcing steel beam 3. Both ends of the support shafts 6 extend into the corresponding slide grooves 11 to be slidably connected thereto. Two support plates 7 are hinged on the support shafts 6, and a clamping block 8 that abuts against the existing structural beam 2 is provided between adjacent support shafts 6, and the ends of the support plates 7 are hinged to the corresponding clamping 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, and a plurality of positioning blocks 10 are provided on the inner wall of the connecting hole, and a plurality of slide grooves 11 parallel thereto are provided on the adjusting shaft 9, and the positioning blocks 10 extend into the corresponding slide grooves 11, and a plurality 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 reinforced 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 reinforced 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, the support shaft 6 is locked, and then the clamping block 8 is locked through the support plate 7, and the clamping block 8 and the clamp 4 are used to form a two-way clamping and fixing of the reinforced steel beam 3 in an upper and lower direction, so that the reinforced steel beam 3 and the existing structural beam 2 are stably fitted and connected, and then the force is synergistically exerted, thereby improving the load capacity of the existing structural beam 2.

[0031] In this embodiment, the mounting structure includes a support 13 detachably connected to the top of both ends of the reinforcing steel beam 3, and the two sides of the support 13 are rotatably connected with a rotating shaft 14 horizontally and perpendicular to the reinforcing steel beam 3, and the rotating shaft 14 is slidably sleeved with a connecting frame 15 horizontally and perpendicular to it, and a latch is detachably connected between the connecting frame 15 and the rotating shaft 14 (conventional technical means, so it is not drawn in the figure), and a load-bearing sleeve 16 is slidably connected to the connecting frame 15, 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-jointed 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 joint, and locking pins are provided between the adjusting rod 20 and the support rod 19 (conventional technical means, so it is 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 fits 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, and then a certain force on the reinforcing steel beam 3 is transmitted 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 are used to support the support shaft 6.

[0034] In this embodiment, the support plate 7 and the support shaft 6 are both 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 abutting block 8 to fit tightly with the existing structural beam 2 .

[0036] In this embodiment, a truncated table 22 abutting against the support 13 is welded and fixed on the rotating shaft 14 .

[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 an existing structure-bearing reinforcement steel beam 3 comprises the following steps:

[0039] 1) Hoisting the reinforcing steel beam 3: Install the reinforcing connecting plates 5 of corresponding specifications on both sides of the lower flange plate of the reinforcing steel beam 3; rotate the adjusting shaft 9 to make the positioning block 10 slide from the positioning groove 12 into the sliding groove 11; then hoist the reinforcing steel beam 3 to the top of the existing structural beam 2, and adjust the position of the reinforcing steel beam 3 to keep the reinforcing steel beam 3 parallel to the existing structural beam 2;

[0040] 2) Install the hoop: install the hoop on the reinforcing connecting plate 5 so that the hoop is engaged with the existing structural beam 2. At this time, the clamping block 8 is squeezed by the existing structural beam 2 and pushes the support shaft 6 to move correspondingly through the support plate 7;

[0041] 3) Adjust the support structure: at this time, rotate the adjustment shaft 9 in the opposite direction, so that the positioning hole slides 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, and use the clamping block 8 and the clamp 4 to form a two-way clamping and fixing of the reinforcement steel beam 3 in an upper and lower direction, 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, and 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 rather than to limit it. 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. An existing structure load-bearing reinforcement steel beam, comprising an existing structure column and an existing structure beam arranged between adjacent existing structure columns, characterized in that: A horizontally arranged reinforcing steel beam is arranged on the existing structural beam, and mounting structures are detachably connected between both ends of the reinforcing 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 reinforcing steel beam; a groove is arranged at the bottom of the reinforcing steel beam, and a supporting structure that is against the existing structural beam is arranged in the groove, and the height of the supporting structure is adjustable.

2. The existing structure load-bearing reinforcement steel beam according to claim 1, characterized in that: Slide grooves are provided on both sides of the groove, and the supporting structure includes a plurality of support shafts horizontally and perpendicular to the reinforcing steel beams, both ends of the support shafts extend into corresponding slide grooves for sliding connection therewith, 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 ends of the support plates are hinged to the corresponding clamping blocks; 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 plurality of positioning blocks are provided on the inner wall of the connecting hole, and a plurality 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 plurality of positioning grooves for accommodating the positioning blocks are provided on one side of the slide groove.

3. The existing structure load-bearing reinforcement steel beam according to claim 2, characterized in that: The mounting structure includes supports detachably connected to the tops of both ends of the reinforcing steel beam, and rotation axes horizontally and perpendicular to the reinforcing steel beam are rotatably connected to the supports on both sides, and connecting frames horizontally and perpendicular to the reinforcing steel beam are slidably sleeved on the rotating shafts, and latches are detachably connected between the connecting frame and the rotating shaft, and load-bearing sleeves are slidably connected to the connecting frames, and fixing plates are rotatably provided on the side walls of the load-bearing sleeves, and one end of the load-bearing sleeves is rotatably connected to an adjusting sleeve threadedly connected to the connecting frame; two groups of support rods are connected to ball joints on the supports, and adjusting rods connected to the ball joints of the connecting frame are coaxially slidably provided at the ends of the support rods, and locking pins are provided between the adjusting rods and the support rods.

4. The existing structure load-bearing reinforcement steel beam according to claim 3, characterized in that: Connecting seats are arranged at both ends of the groove, and both ends of the supporting shaft pass through the connecting seats and are rotatably connected thereto.

5. The existing structure load-bearing reinforcement steel beam according to claim 4, characterized in that: The support plate and the support shaft are both provided with torsion springs.

6. The existing structure load-bearing reinforcement steel beam according to claim 5, characterized in that: A truncated table abutting against the support is fixed on the rotating shaft.

7. The construction method of the existing structure load-bearing reinforcement steel beam according to claim 6 is characterized in that: The steps include: 1) Hoisting the reinforcement steel beam: Install the corresponding specifications of the reinforcement connecting plates on both sides of the lower flange plate of the reinforcement steel beam; rotate the adjustment shaft to make the positioning block slide from the positioning groove into the slide groove; 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 the reinforcement steel beam parallel to the existing structural beam; 2) Install the clamp: install the clamp on the reinforced connecting plate so that the clamp is engaged with the existing structural beam. At this time, the clamp block is squeezed by the existing structural beam and pushes the support shaft to move correspondingly 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, and use the clamping block and the clamp to clamp the reinforcement steel beam in an upper and lower bidirectional manner, so that the reinforcement steel beam and the existing structural beam are subjected to force in coordination; 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 corresponding two fixed plates on the same connecting frame clamp the existing structural column, and 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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