A reinforcement structure for intersections of bidirectional cross beams of existing buildings and a building having the structure
By using the intersection node steel plates, reinforced angle steel on the bottom side of the beam, tic toe bottom steel plate pressing strips and M8 chemical anchor bolts at the intersection of the two-way tic toe beams of existing buildings, the continuous reinforcement of the intersection nodes of the two-way tic toe beams is achieved, and the problem of insufficient solidity when the structural load increases in the existing technology is solved, the structure's load-bearing capacity is improved and the construction process is simplified.
Patent Information
- Application Number
- CN202421471282.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The prior art is difficult to achieve continuous reinforcement at the intersection of bidirectional tic toe beams of existing buildings, resulting in insufficient solid structure when load increases.
Components such as steel plates in the intersection node area, reinforced angle steel on the bottom side of the beam, tic toe bottom steel plate pressing strips and M8 chemical anchor bolts are used to form a continuous reinforcement structure at the nodes of the two-way crossed tic toe beams.
The continuous reinforcement of the intersection node of the two-way tic toe beam is achieved, which enhances the bearing capacity of the structure, simplifies the construction process and reduces the on-site operation volume.
Smart Images
Figure CN222730793U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building engineering, in particular to a reinforcement structure for intersections of bidirectional cross beams of an existing building and a building with the structure. Background Art
[0002] With the continuous development of the construction industry and urban renewal, the functions of a large number of existing buildings have been changed, and structural reinforcement of existing buildings without demolishing them has become the main method. As the functions of buildings change, in many cases the structural floor load becomes larger than the original design, and the reinforcement technology of existing structural components has a large number of applications.
[0003] In the structural floor type, two-way cross beams are widely used. When the load increases due to changes in building functions, the one-way beam can be reinforced with angle steels that are continuously bonded to the side of the beam. The cross beam is a two-way beam with a cross node. The angle steel bonded to the side of the beam cannot be continuous and must be disconnected. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned background technology and to provide a reinforcement structure for the intersection of bidirectional cross beams of an existing building and a building having the structure, so as to provide a solution for the continuous reinforcement of the cross beams at the nodes of the bidirectional cross beam structure.
[0005] The utility model provides a reinforcement structure for the intersection of two-way cross-beams of an existing building, comprising a cross-beam composed of concrete beams in two directions, a cross-beam, a steel plate in an intersection area at the bottom connection of the cross-beam, two sides of the bottom of the concrete beam in each direction are provided with beam bottom side reinforcement angle steels arranged along the length direction of the concrete beam, the transverse parts of the two beam bottom side reinforcement angle steels of each concrete beam support the bottom of the concrete beam, two sides of the beam surface of the concrete beam in each direction are provided with flat steels arranged along the length direction of the concrete beam and connected to the reinforced concrete floor on the outer side, a plurality of steel tie plates arranged along the length direction of the concrete beam are evenly distributed between the two flat steels of each concrete beam, and each steel tie plate It is arranged along the cross-sectional direction of the concrete beam, and each steel tie plate is welded to two flat steels at both ends. A plurality of U-shaped steel hoops arranged along the length direction of the concrete beam are arranged at the bottom and outside of the two bottom side reinforcement angles of each concrete beam. Each U-shaped steel hoop is arranged along the cross-sectional direction of the concrete beam. Both sides of the bottom of each U-shaped steel hoop are respectively provided with M8 chemical anchor bolts that pass through the U-shaped steel hoop and the bottom side reinforcement angle steel in sequence and are fixedly connected to the bottom of the concrete beam. Each flat steel of each concrete beam is penetrated by a φ14 through-screw that passes through the reinforced concrete floor, and the bottom ends of the two φ14 through-screws opposite to each other in the transverse direction of each concrete beam are respectively welded to the two ends of the corresponding U-shaped steel hoop.
[0006] In the above technical solution, the steel tie plates of each concrete beam and the U-shaped steel hoop plates are in a one-to-one correspondence.
[0007] In the above technical solution, a tic-tac-toe bottom steel plate strip is provided between each U-shaped steel hoop plate and the connected beam bottom side reinforcement angle steel along the length direction of the concrete beam, and the M8 chemical anchor bolt passes through the U-shaped steel hoop plate, the tic-tac-toe bottom steel plate strip and the beam bottom side reinforcement angle steel in sequence and is fixedly connected to the bottom of the concrete beam.
[0008] In the above technical scheme, the concrete beam in each direction is provided with two tic-tac-toe bottom steel plate beadings (3), wherein the two ends of the tic-tac-toe bottom steel plate beading (3) in one direction are respectively connected to the U-shaped steel hoop plates (4) and the beam bottom side reinforcing angle steel (2) on both sides of the tic-tac-toe beam (5) in the same direction, and the middle part of the tic-tac-toe bottom steel plate beading (3) is sequentially fixedly connected to the intersection node area steel plate (1) and the beam bottom of the intersection area of the tic-tac-toe beam (5) through M8 chemical anchor bolts (6), and the tic-tac-toe bottom steel plate beading (3) in the other direction is divided into three sections, wherein the two ends of the tic-tac-toe bottom steel plate beading (3) are respectively connected to the U-shaped steel hoop plates (4) and the beam bottom side reinforcing angle steel (2) on both sides of the tic-tac-toe beam (5) in the same direction, and the middle section of the tic-tac-toe bottom steel plate beading (3) divided into three sections is sequentially fixedly connected to the intersection node area steel plate (1) and the beam bottom of the intersection area of the tic-tac-toe beam (5) through M8 chemical anchor bolts (6).
[0009] In the above technical solution, a steel pad is provided along the length direction of the concrete beam between the inner sides of both ends of each U-shaped steel hoop and the corresponding side wall of the concrete beam. The inner sides of both ends of the U-shaped steel hoop press the steel pad, and the outer sides of both ends of each U-shaped steel hoop are respectively connected to the corresponding two φ14 through screws.
[0010] In the above technical solution, the area of the steel plate in the intersection node area is equal to the area of the intersection area of the cross beam.
[0011] In the above technical solution, the steel plate in the intersection node area is rectangular in shape.
[0012] In the above technical solution, the steel plate in the intersection node area is square.
[0013] The present invention also provides a building with a reinforcement structure for intersections of bidirectional cross beams of existing buildings, comprising a beam-column system consisting of a main beam and concrete columns, wherein the main beam has a reinforcement structure for intersections of bidirectional cross beams of existing buildings.
[0014] The utility model provides a reinforcement structure for the intersection of bidirectional cross beams of existing buildings and a building with the structure, which has the following beneficial effects:
[0015] The utility model provides a reinforcement structure for the intersection of bidirectional cross beams of an existing building and a building with the structure, achieving the purpose of continuous reinforcement of bidirectional cross beam side-bonded steel at the intersection of bidirectional cross beams. The utility model has simple construction, small on-site operation, and good engineering application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a bottom view of the structure of the existing building bidirectional cross beam intersection reinforcement structure and the building with the structure;
[0017] Figure 2 for Figure 1 Structural cross-section view at AA in the middle. DETAILED DESCRIPTION
[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.
[0019] This embodiment discloses a reinforcement structure for the intersection of bidirectional cross beams of an existing building, such as Figure 1-2 As shown, the reinforcement structure is mainly composed of a combination of an intersection node area steel plate 1, a beam bottom side reinforcement angle steel 2, a tic-tac-toe bottom steel plate strip 3 and an M8 chemical anchor bolt 6. The intersection node area steel plate 1 and the beam bottom side reinforcement angle steel 2 in two directions of the tic-tac-toe beam 5 are bonded to the intersection node area steel plate 1 and the beam bottom side reinforcement angle steel 2 through the tic-tac-toe bottom steel plate strip 3. Then, 24 evenly distributed M8 chemical anchor bolts 6 are used to fix the intersection node area steel plate 1, the beam bottom side reinforcement angle steel 2 and the tic-tac-toe bottom steel plate strip 3 on the concrete tic-tac-toe beam 5, forming a continuous steel bonding reinforcement structure at the node of the bidirectional cross tic-tac-toe beam 5.
[0020] The utility model discloses a building with a reinforcement structure of intersection points of bidirectional cross beams of existing buildings, comprising a beam-column system consisting of a main beam and concrete columns, wherein the main beam has the reinforcement structure of intersection points of bidirectional cross beams of existing buildings.
[0021] The construction steps of this utility model are as follows:
[0022] The first step is to use the intersection node area steel plate 1 to stick steel at the bottom of the beam in the bidirectional intersection area of the cross beam 5 of reinforced concrete.
[0023] In the second step, a flat steel bar 9 is used to fix the two sides of the beam surface of the cross beam 5 to the beam surface of the cross beam 5, and a steel tie plate 10 is set between the two flat steel bars 9 at a certain distance and fixed to the beam surface with steel. The spacing between adjacent steel tie plates 10 is the same as the spacing between adjacent U-shaped steel hoop plates 4. Holes are punched on the two flat steel bars 9 on the beam surface and penetrate the reinforced concrete floor slab, and φ14 through-screws 7 are installed in the holes.
[0024] The third step is to place a bottom side reinforcement angle steel 2 on the bottom side of the cross beam 5, place a steel pad 8 on the top side of the beam under the reinforced concrete floor slab, use U-shaped steel hoop plates 4 to clamp the bottom side reinforcement angle steel 2 and steel pad 8 in the two-way intersection area away from the cross beam 5, and weld the φ14 through-screw 7 to the outer side of the steel hoop plate 4.
[0025] The fourth step is to weld steel strips into a tic-tac-toe bottom steel plate strip 3, and connect the tic-tac-toe bottom steel plate strip 3 with the intersection node area steel plate 1 and the beam bottom side reinforcement angle steel 2 by bonding. Use U-shaped steel hoop plates 4 to clamp the beam bottom side reinforcement angle steel 2, tic-tac-toe bottom steel plate strip 3 and steel pad 8 in the two-way intersection area near the tic-tac-toe beam 5, and weld the φ14 through-screw 7 to the U-shaped steel hoop plate 4. Set 24 M8 chemical anchor bolts 6 symmetrically and evenly on the intersection node area steel plate 1, beam bottom side reinforcement angle steel 2, tic-tac-toe bottom steel plate strip 3, and U-shaped steel hoop plate 4 in the intersection area, and then anchor them into the tic-tac-toe beam 5 for fixing.
[0026] The fifth step is to reinforce the bottom side of the beam by using chemical adhesive to pressure-inject adhesive to reinforce the angle steel 2, U-shaped steel hoop plate 4, steel pad 8 and the cross beam 5.
[0027] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
[0028] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
Claims
1. A reinforcement structure for the intersection of bidirectional crisscross beams of an existing building, comprising a crisscross beam (5) composed of concrete beams in both longitudinal and transverse directions, characterized in that: The cross-shaped beam (5) is provided with a steel plate (1) at the bottom connection of the beam, and the bottom side reinforcement angle steel (2) arranged along the length direction of the concrete beam is provided on both sides of the bottom of the concrete beam in each direction. The transverse parts of the two bottom side reinforcement angle steels (2) of each concrete beam support the bottom of the concrete beam. Flat steel (9) arranged along the length direction of the concrete beam and connected to the reinforced concrete floor on the outer side is provided on both sides of the beam surface of the concrete beam in each direction. A plurality of steel tie plates (10) arranged along the length direction of the concrete beam are evenly spaced between the two flat steels (9) of each concrete beam. Each steel tie plate (10) is arranged along the cross-sectional direction of the concrete beam, and each steel tie plate (10) is connected to the two flat steels at both ends. The two bottom reinforcement angle steels (2) of each concrete beam are welded together, and a plurality of U-shaped steel hoop plates (4) are arranged along the length direction of the concrete beam at the bottom and outside of the two bottom reinforcement angle steels (2) of each concrete beam. Each U-shaped steel hoop plate (4) is arranged along the cross-sectional direction of the concrete beam. Both sides of the bottom of each U-shaped steel hoop plate (4) are respectively provided with M8 chemical anchor bolts (6) which pass through the U-shaped steel hoop plate (4) and the bottom reinforcement angle steel (2) of the beam in sequence and are fixedly connected to the bottom of the concrete beam. Each flat steel (9) of each concrete beam is penetrated with a φ14 through-screw (7) which passes through the reinforced concrete floor. The bottom ends of the two φ14 through-screws (7) which are opposite to each other in the transverse direction of each concrete beam are respectively welded to the two ends of the corresponding U-shaped steel hoop plates (4).
2. The existing building bidirectional cross beam intersection reinforcement structure according to claim 1 is characterized in that: The steel tie plates (10) of each concrete beam and the U-shaped steel hoop plates (4) are in a one-to-one correspondence.
3. The existing building bidirectional cross beam intersection reinforcement structure according to claim 2 is characterized in that: A crisscross bottom steel plate strip (3) arranged along the length direction of the concrete beam is provided between each U-shaped steel hoop plate (4) and the connected beam bottom side reinforcing angle steel (2); the M8 chemical anchor bolt (6) sequentially passes through the U-shaped steel hoop plate (4), the crisscross bottom steel plate strip (3) and the beam bottom side reinforcing angle steel (2) to be fixedly connected to the concrete beam bottom.
4. The existing building bidirectional cross beam intersection reinforcement structure according to claim 3 is characterized in that: The concrete beam in each direction is provided with two tic-tac-toe bottom steel plate beadings (3), wherein the two ends of the tic-tac-toe bottom steel plate beading (3) in one direction are respectively connected to the U-shaped steel hoop plates (4) on both sides of the tic-tac-toe beam (5) in the same direction and the beam bottom side reinforcement angle steel (2), and the middle part of the tic-tac-toe bottom steel plate beading (3) is sequentially fixedly connected to the intersection node area steel plate (1) and the beam bottom of the intersection area of the tic-tac-toe beam (5) through M8 chemical anchor bolts (6), and the tic-tac-toe bottom steel plate beading (3) in the other direction is divided into three sections, wherein the two ends of the tic-tac-toe bottom steel plate beading (3) are respectively connected to the U-shaped steel hoop plates (4) on both sides of the tic-tac-toe beam (5) in the same direction and the beam bottom side reinforcement angle steel (2), and the middle section of the tic-tac-toe bottom steel plate beading (3) divided into three sections is sequentially fixedly connected to the intersection node area steel plate (1) and the beam bottom of the intersection area of the tic-tac-toe beam (5) through M8 chemical anchor bolts (6).
5. The existing building bidirectional cross beam intersection reinforcement structure according to claim 4 is characterized in that: A steel pad (8) arranged along the length direction of the concrete beam is provided between the inner sides of both ends of each U-shaped steel hoop plate (4) and the corresponding concrete beam side wall. The inner sides of both ends of the U-shaped steel hoop plate (4) press the steel pad (8) tightly. The outer sides of both ends of each U-shaped steel hoop plate (4) are respectively connected to two corresponding φ14 through-thread screws (7).
6. The existing building bidirectional cross beam intersection reinforcement structure according to claim 5, characterized in that: The area of the steel plate (1) in the intersection node area is equal to the area of the intersection area of the cross beam (5).
7. The existing building bidirectional cross beam intersection reinforcement structure according to claim 6 is characterized in that: The intersection node area steel plate (1) is in a rectangular shape.
8. The existing building bidirectional cross beam intersection reinforcement structure according to claim 7 is characterized in that: The steel plate (1) in the intersection node area is square.
9. A building with a reinforcement structure of the intersection of bidirectional cross beams of an existing building, comprising a beam-column system consisting of a main beam and concrete columns, characterized in that: The main beam has the existing building bidirectional cross beam intersection reinforcement structure as described in any one of claims 1 to 8.