CN-117605317-B - Reinforcing system for repairing defects and improving bearing capacity and construction method

Abstract

The invention discloses a reinforcing system for repairing defects and improving bearing capacity and a construction method, and belongs to the field of concrete beam slab region construction. The cast-in-place slab and the cast-in-place beam are integrally cast, a reinforcing area is formed at the joint of the cast-in-place slab and the cast-in-place beam, a reinforcing steel plate and reinforcing steel bars are installed in the reinforcing area and fixedly connected with each other, fine stone concrete is filled in the reinforcing steel plate for casting and fixing, epoxy resin glue is filled in the reinforcing steel bars for anchoring, and the fine stone concrete is matched with the epoxy resin glue in filling height. The invention solves the technical problems that the defect of the concrete slab cannot be repaired in time and the bearing capacity is insufficient, and the concrete slab structure is leaked.

Inventors

• GUO SHENGQUAN
• WANG XIAOPING
• HUANG WEIJUN
• Lei tuanjie
• WEN YAWEI
• YANG DEJIAN
• LEI YAPING

Assignees

• 中冶检测认证(安徽)有限公司

Dates

Publication Date

20260508

Application Date

20231129

Claims (6)

1. 1. The reinforcing system for repairing defects and improving bearing capacity is characterized by comprising a concrete cast-in-place plate (1), a concrete cast-in-place beam (2), a reinforcing steel plate (3), reinforcing steel bars (4), fine stone concrete (5) and epoxy resin glue (6), wherein the concrete cast-in-place plate (1) and the concrete cast-in-place beam (2) are integrally poured, a reinforcing area (7) is formed at the joint of the concrete cast-in-place plate (1) and the concrete cast-in-place beam (2), the reinforcing steel plate (3) and the reinforcing steel bars (4) are installed in the reinforcing area (7), the reinforcing steel plate (3) is fixedly connected with the reinforcing steel bars (4), fine stone concrete (5) is filled in the reinforcing steel plates (3) for pouring and fixing, the epoxy resin glue (6) is filled in the reinforcing steel bars (4) for anchoring, and the fine stone concrete (5) is matched with the filling height of the epoxy resin glue (6); one end of the reinforced steel plate (3) is lapped at the concrete cast-in-situ beam (2), and the other end of the reinforced steel plate (3) is lapped at the concrete cast-in-situ beam (1); the reinforcing steel bars (4) are arranged in a plurality of groups and are arranged in parallel, reinforcing ribs (8) are arranged at the bottoms of the reinforcing steel bars (4), auxiliary steel bars (9) are arranged in the reinforcing ribs (8), and the auxiliary steel bars (9) are arranged perpendicular to the reinforcing steel bars (4); The reinforcing rib (8) comprises a main body part (81), lateral parts (82) are arranged at two ends of the main body part (81), the lateral parts (82) tilt upwards, a first mounting hole (83) is formed in the bottom of the reinforcing rib (8), a second mounting hole (84) is formed in the lateral parts (82), and auxiliary reinforcing steel bars (9) are inserted between the first mounting hole (83) and the second mounting hole (84); the upper part of the reinforcing rib (8) is provided with a notch part (85), and the notch part (85) is suitable for installing the reinforcing steel bar (4); the side direction of the reinforcing rib (8) is provided with a positioning piece which is suitable for positioning the auxiliary reinforcing steel bar (9) and the reinforcing steel bar (4); The side direction of the reinforcing rib (8) is provided with a first positioning hole (86), the positioning piece comprises an upper claw part and a lower claw part, the upper claw part comprises two groups of side claw hooks (19) which are V-shaped and a middle sleeve (10), and the side claw hooks (19) are suitable for being hung on the reinforcing steel bar (4); The lower claw part comprises a vertical column (11) and a U-shaped plate (12), the vertical column (11) is fixedly connected with the U-shaped plate (12), the U-shaped plate (12) is suitable for being clamped on the auxiliary reinforcing steel bar (9), and the clamping position is located between the first mounting hole (83) and the second mounting hole (84); the vertical column (11) is provided with a second positioning hole (13), the middle sleeve (10) is provided with a third positioning hole (14), the first positioning hole (86), the second positioning hole (13) and the third positioning hole (14) are in pore diameter phase adaptation, the middle sleeve (10) is suitable for being sleeved on the vertical column (11), a positioning bolt (87) is suitable for being installed among the first positioning hole (86), the second positioning hole (13) and the third positioning hole (14), and the middle sleeve (10) and the vertical column (11) are relatively fixed on the reinforcing rib (8).
2. 2. A reinforcing system for repairing defects and increasing load-bearing capacity according to claim 1, characterized in that the reinforcing bars (4) are provided with longitudinal plates (15) on the side facing away from the reinforcing steel plate (3), the longitudinal plates (15) and the reinforcing steel plate (3) being provided with position holes, on which reinforcing members are provided, which are adapted to the position of the opposite ends in the reinforcing area (7).
3. 3. A reinforcement system for repairing defects and increasing load-bearing capacity according to claim 2, characterized in that said reinforcement comprises a vertical rod (16), said vertical rod (16) being a threaded rod, said position hole being a threaded hole, the bottom end of said vertical rod (16) being adapted to be screwed in the position hole; The vertical rod (16) is sleeved with a position plate (17), the position plate (17) is suitable for being attached to the surface of a concrete cast-in-situ plate (1) or a concrete cast-in-situ beam (2) outside the reinforcing area (7), the position plate (17) is provided with a locking nut (18), and the locking nut (18) is suitable for being installed on the vertical rod (16) to lock the position plate (17) downwards.
4. 4. A method of constructing a reinforcement system for repairing defects and increasing load bearing capacity as claimed in claim 3, comprising the steps of: Grooving the joint of the concrete cast-in-situ slab (1) and the concrete cast-in-situ beam (2) according to design requirements for pouring a reinforced steel plate (3), and grooving the concrete cast-in-situ slab (1) for anchoring a reinforced steel bar (4); Step two, after finishing the grooving work of the step one, roughening the bottom of the grooving of the reinforced steel plate (3), and cleaning grooving of the reinforced steel plate (3) and reinforcing grooving residues after roughening; thirdly, welding the reinforced steel plate (3) and the reinforced steel bar (4) according to design requirements; pouring fine stone concrete (5) with the thickness of 2cm in a groove of the reinforced steel plate (3), and placing the welded reinforced steel plate (3) and the reinforced steel bars (4) after pouring; Continuously pouring fine stone concrete (5) in the grooves of the reinforced steel plates (3) until the plate surface is high, and simultaneously injecting epoxy resin glue (6) in the grooves of the reinforced steel bars (4); and step six, pouring mortar on the board surface for leveling after the work is completed for 48 hours until the elevation is regulated.
5. 5. The construction method of a reinforcing system for repairing defects and improving bearing capacity according to claim 4, wherein in the fourth step, auxiliary steel bars (9) are installed in the reinforcing steel bars (8) in advance, positioning members are installed after the auxiliary steel bars (9) are installed, upper claw portions are connected to the reinforcing steel bars (4) on two sides of the reinforcing steel bars (8), lower claw portions are abutted to the auxiliary steel bars (9) and fixed on the reinforcing steel bars (8), longitudinal plates (15) are welded at the end portions of the reinforcing steel bars (4) after the reinforcing steel bars (4) are welded, and then the reinforcing steel plates (3) and the reinforcing steel bars (4) are welded.
6. 6. The construction method of the reinforcement system for repairing defects and improving bearing capacity according to claim 5, wherein in the fifth step, after the vertical rod (16) is installed, the vertical rod is abutted against the surface of the concrete cast-in-situ slab (1) or the concrete cast-in-situ beam (2) outside the reinforcement area (7) through the installation position plate (17), and the locking nut (18) locks the abutting position plate (17).

Description

Reinforcing system for repairing defects and improving bearing capacity and construction method Technical Field The invention provides a reinforcing system for repairing defects and improving bearing capacity and a construction method, and belongs to the field of concrete beam slab region construction. Background In the construction process of the concrete slab, due to the fact that vibration of the joint of the beam and the slab is not compact, workers tread the negative ribs of the slab during pouring, the slab is disassembled too early, the slab is piled up and loaded, and the like, quality problems such as cracks on the surface of the concrete slab, internal cavities of the joint of the beam and the slab, reduced bearing capacity and the like are caused. If the defects of the concrete slab cannot be repaired in time and the problem of insufficient bearing capacity is solved, leakage will occur in the concrete slab structure, the using function is affected, and even potential safety hazards are left. The FRP cloth has the characteristics of high strength, light weight, corrosion resistance, fatigue resistance and the like, and is widely used for reinforcing the floor slab, but when the FRP cloth is used for reinforcing the concrete slab, the FRP cloth has the characteristics of insufficient anchoring length, lag stress, large deformation and low strength utilization rate. The method for repairing the cracks mainly adopts a high-pressure grouting method, but the high-pressure grouting has the defects of incomplete crack repairing, difficult control of grouting pressure and the like. Disclosure of Invention In order to solve the technical problems, the inventor obtains the technical proposal of the invention through practice and summary, and the invention discloses the basic conception of the technical proposal adopted in order to solve the technical problems is as follows: The utility model provides a reinforcing system for repairing defect and improvement bearing capacity, includes cast-in-place board of concrete, cast-in-place roof beam of concrete, reinforcing steel plate, reinforcing steel bar, fine stone concrete and epoxy glue, cast-in-place board of concrete and cast-in-place roof beam of concrete are integrative to be pour, set up the reinforcing region on the junction of cast-in-place board of concrete and cast-in-place roof beam of concrete, install reinforcing steel plate and reinforcing steel bar in the reinforcing region, reinforcing steel plate and reinforcing steel bar fixed connection, the intussuseption of reinforcing steel plate is filled with fine stone concrete and is pour fixedly, the reinforcing steel bar intussuseption is filled with epoxy glue anchor, fine stone concrete and epoxy glue fill altitude looks adaptation. In a further technical scheme, the reinforced steel plate is L-shaped, one end of the reinforced steel plate is lapped at the cast-in-situ concrete beam, and the other end of the reinforced steel plate is lapped at the cast-in-situ concrete plate. In a further technical scheme, the reinforcing steel bars are provided with a plurality of groups and are arranged in parallel, the bottoms of the reinforcing steel bars are provided with reinforcing ribs, auxiliary steel bars are arranged in the reinforcing ribs, and the auxiliary steel bars are perpendicular to the reinforcing steel bars. In a further technical scheme, the reinforcing rib is in a shape of a Chinese character 'ji', the reinforcing rib comprises a main body part, lateral parts are arranged at two ends of the main body part and tilt upwards, a first mounting hole is formed in the bottom of the reinforcing rib, a second mounting hole is formed in the lateral part, and auxiliary reinforcing steel bars are suitable for being inserted between the first mounting hole and the second mounting hole; the upper part of the reinforcing rib is provided with a notch part which is suitable for installing the reinforcing rib; and the positioning piece is suitable for positioning the auxiliary steel bar and the reinforcing steel bar. In a further technical scheme, a first positioning hole is formed in the lateral direction of the reinforcing bar, the positioning piece comprises an upper claw part and a lower claw part, the upper claw part comprises two groups of side claw hooks and a middle sleeve, the two groups of side claw hooks are in a V shape, and the side claw hooks are suitable for being hung on the reinforcing bar; The lower claw part comprises a vertical column and a U-shaped plate, the vertical column is fixedly connected with the U-shaped plate, the U-shaped plate is suitable for being clamped on the auxiliary reinforcing steel bar, and the clamping position is positioned between the first mounting hole and the second mounting hole; the vertical column is provided with a second positioning hole, the middle sleeve is provided with a third positioning hole, the first positioning hole, the second positioning hole and