Reinforced concrete beam-column joint reinforcing structure

Abstract

The utility model relates to a reinforced concrete beam column joint reinforcing structure which comprises a frame column and a frame beam, a left prestressed tendon arc-shaped hole channel is formed in the frame column and the left frame beam, and a first arc-shaped unbonded prestressed tendon is embedded in the left prestressed tendon arc-shaped hole channel. Two end parts of the first arc-shaped unbonded prestressed tendon are respectively anchored on the second vertical surface of the frame column and the first top surface of the left side frame beam; the frame column and the right frame beam are provided with a right prestressed tendon arc-shaped hole channel, a second arc-shaped unbonded prestressed tendon is embedded in the right prestressed tendon arc-shaped hole channel, and the two ends of the second arc-shaped unbonded prestressed tendon are anchored to the first vertical face of the frame column and the second top face of the right frame beam respectively. The two arc-shaped unbonded prestressed tendons are arranged in the frame beam and the frame column, so that structural damage of beam column joints caused by earthquakes can be relieved, and the concrete beam column frame structure is small in damage when bearing the earthquake action, easy to repair and capable of basically restoring to the original shape.

Description

Technical Field

[0001] The utility model relates to a beam-column reinforcement structure, in particular to a reinforced concrete beam-column node reinforcement structure. Background Art

[0002] The reinforced concrete frame beam-column node plays a role in transmitting and distributing internal forces and ensuring the integrity of the frame structure. Since the concrete frame structure intersects with the beam-column node and the beam reinforcement and column reinforcement, the structure of this area is relatively complex. The core area of ​​the node mainly bears the axial force, shear force and bending moment transmitted from the column and beam. When the beam axis and the column are eccentric, torque will also be generated. In addition, temperature changes and foundation settlement will cause corresponding internal forces at the node. Therefore, the stress situation in the beam-column node area is very complicated. When the frame structure node is insufficient in bearing capacity due to improper design and construction or changes in the use environment and use function, or due to increased structural seismic requirements, or the ductility and stiffness are insufficient or the seismic performance does not meet the requirements, the node needs to be reinforced, especially for the renovation of some old houses, it is even more necessary to strengthen the strength of the reinforced concrete frame beam-column node. Utility Model Content

[0003] The utility model designs a reinforced concrete beam-column node reinforcement structure, which solves the technical problem that the existing frame beam structure has insufficient bearing capacity due to the increased seismic requirements, or insufficient ductility and rigidity, or seismic performance does not meet the requirements.

[0004] In order to solve the above-mentioned technical problems, the utility model adopts the following solutions:

[0005] A reinforced concrete beam-column node reinforcement structure comprises a frame column and a frame beam, wherein the frame column and the frame beam are vertically connected, and is characterized in that: a left prestressed tendon arc channel is provided between the frame column and the left frame beam, a first arc-shaped non-bonded prestressed tendon is buried in the left prestressed tendon arc channel, and two ends of the first arc-shaped non-bonded prestressed tendon are respectively anchored on the second vertical surface of the frame column and the first top surface of the left frame beam; a right prestressed tendon arc channel is provided between the frame column and the right frame beam, a second arc-shaped non-bonded prestressed tendon is buried in the right prestressed tendon arc channel, and two ends of the second arc-shaped non-bonded prestressed tendon are respectively anchored on the first vertical surface of the frame column and the second top surface of the right frame beam.

[0006] Preferably, the first arc-shaped unbonded prestressed tendon forms a convex portion facing the ground, and the second arc-shaped unbonded prestressed tendon forms a convex portion also facing the ground.

[0007] Preferably, an anchor A is provided at both ends of the first arc-shaped unbonded prestressed tendon to fix it to the second vertical surface and the first top surface of the left frame beam; an anchor B is provided at both ends of the second arc-shaped unbonded prestressed tendon to fix it to the first vertical surface of the frame column and the second top surface of the right frame beam.

[0008] Preferably, the two side surfaces, bottom surface and top surface on the left side of the connection node between the frame column and the frame beam are provided with a left frame beam outer steel plate; the two side surfaces, bottom surface and top surface on the right side of the connection node between the frame column and the frame beam are provided with a right frame beam outer steel plate; frame column outer steel plates are provided around the frame columns; the left frame beam outer steel plate on the bottom surface of the left frame beam and the frame column outer steel plate covering the first vertical surface of the frame column are provided with a plurality of parallel and spaced reinforcing ribs; the right frame beam outer steel plate on the bottom surface of the right frame beam and the frame column outer steel plate covering the second vertical surface of the frame column are also provided with a plurality of parallel and spaced reinforcing ribs; the reinforcing ribs are located below the first arc-shaped unbonded prestressed tendons and the second arc-shaped unbonded prestressed tendons.

[0009] Preferably, the reinforcing rib is a right triangle, the horizontal side of which is welded to the outer steel plate of the left frame beam or the outer steel plate of the right frame beam, and the vertical side of which is welded to the outer steel plate of the frame column.

[0010] Preferably, it also includes a plurality of horizontal prestressed steel bars, which respectively pass through the outer steel plates of the frame columns on the left and right sides of the column, and are anchored on the outer steel plates of the frame columns on the left and right sides of the column to apply prestress.

[0011] Preferably, it also includes a plurality of vertical prestressed steel bars, which respectively pass through the left frame beam outer steel plate or the right frame beam outer steel plate on the top and bottom surfaces of the frame beam, and are anchored to the left frame beam outer steel plate or the right frame beam outer steel plate on the top and bottom surfaces and apply prestress.

[0012] The reinforced concrete beam-column node reinforcement structure has the following beneficial effects:

[0013] (1) The utility model provides two arc-shaped unbonded prestressed tendons in the frame beams and frame columns to reduce the structural damage to the beam-column joints caused by earthquakes. The concrete beam-column frame structure is less damaged when subjected to earthquakes and is easy to repair and can be basically restored to its original state.

[0014] (2) The outer steel plates of the frame beams and the outer steel plates of the frame columns of the utility model are connected by reinforcing ribs, which can effectively improve the bending resistance of the normal section of the frame beams and columns, the shear resistance of the inclined section and the rigidity of the section, and reduce the damage to the node area of ​​the frame beams and columns during the construction process of the prestressed steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Schematic diagram of the reinforced concrete beam-column node reinforcement structure of the utility model.

[0016] Description of reference numerals:

[0017] 1—frame column; 11—first vertical surface; 12—second vertical surface; 2—frame beam; 21—first top surface; 22—second top surface; 3—first arc-shaped unbonded prestressed tendon; 31—anchor A; 4—second arc-shaped unbonded prestressed tendon; 41—anchor B; 51—left frame beam outer steel plate; 52—right frame beam outer steel plate; 6—frame column outer steel plate; 7—strengthening rib. DETAILED DESCRIPTION

[0018] Combine the following Figure 1 , the utility model is further described:

[0019] like Figure 1 As shown, the reinforced concrete beam-column node reinforcement structure of the present invention includes a frame column 1 and a frame beam 2, the frame column 1 and the frame beam 2 are vertically connected, the frame column 1 and the left frame beam 2 are provided with a left prestressed tendon arc channel, the first arc-shaped non-bonded prestressed tendon 3 is buried in the left prestressed tendon arc channel, and the two ends of the first arc-shaped non-bonded prestressed tendon 3 are respectively anchored on the second vertical surface 12 of the frame column 1 and the first top surface 21 of the left frame beam 2; the frame column 1 and the right frame beam 2 are provided with a right prestressed tendon arc channel, the second arc-shaped non-bonded prestressed tendon 4 is buried in the right prestressed tendon arc channel, and the two ends of the second arc-shaped non-bonded prestressed tendon 4 are respectively anchored on the first vertical surface 11 of the frame column 1 and the second top surface 22 of the right frame beam 2.

[0020] The first arc-shaped unbonded prestressed tendons 3 form a convex portion facing the ground, and the second arc-shaped unbonded prestressed tendons 4 form a convex portion also facing the ground.

[0021] The first arc-shaped unbonded prestressed tendon 3 is respectively provided with an anchor A31 at both ends so as to be fixed on the second vertical surface 12 and the first top surface 21 of the left frame beam 2; the second arc-shaped unbonded prestressed tendon 4 is respectively provided with an anchor B41 at both ends so as to be fixed on the first vertical surface 11 of the frame column 1 and the second top surface 22 of the right frame beam 2.

[0022] The two side surfaces, bottom surface and top surface on the left side of the connection node between the frame column 1 and the frame beam 2 are provided with a left frame beam outer steel plate 51; the two side surfaces, bottom surface and top surface on the right side of the connection node between the frame column 1 and the frame beam 2 are provided with a right frame beam outer steel plate 52; frame column outer steel plates 6 are arranged around the frame column 1; the left frame beam outer steel plate 51 on the bottom surface of the left frame beam 2 and the frame column outer steel plate 6 covering the first vertical surface 11 of the frame column 1 are provided with a plurality of parallel and spaced reinforcing ribs 7; the right frame beam outer steel plate 52 on the bottom surface of the right frame beam 2 and the frame column outer steel plate 6 covering the second vertical surface 12 of the frame column 1 are also provided with a plurality of parallel and spaced reinforcing ribs 7; the reinforcing ribs 7 are located below the first arc-shaped unbonded prestressed tendons 3 and the second arc-shaped unbonded prestressed tendons 4.

[0023] The reinforcing rib 7 is a right triangle, with its horizontal side welded to the left frame beam outer steel plate 51 or the right frame beam outer steel plate 52, and its vertical side welded to the frame column outer steel plate 6.

[0024] It also includes a plurality of horizontal prestressed steel bars, which respectively pass through the frame column outer steel plates 6 on the left and right sides of the column, and are anchored on the frame column outer steel plates 6 on the left and right sides of the column to apply prestress.

[0025] It also includes a plurality of vertical prestressed steel bars, which respectively pass through the left frame beam outer steel plate 51 or the right frame beam outer steel plate 52 on the top and bottom surfaces of the frame beam, and are anchored on the left frame beam outer steel plate 51 or the right frame beam outer steel plate 52 on the top and bottom surfaces to apply prestress.

[0026] The construction method of the utility model is as follows:

[0027] 1. Pass multiple horizontal prestressed steel bars through the frame column outer steel plates 6 on the left and right sides of the column, and anchor them on the frame column outer steel plates 6 on the left and right sides of the column to apply prestress. Pass multiple vertical prestressed steel bars through the left frame beam outer steel plates 51 or the right frame beam outer steel plates 52 on the top and bottom surfaces of the frame beam, and anchor them on the left frame beam outer steel plates 51 or the right frame beam outer steel plates 52 on the top and bottom surfaces to apply prestress.

[0028] 2. The horizontal side of the reinforcing rib 7 is welded to the outer steel plate 51 of the left frame beam or the outer steel plate 52 of the right frame beam, and the vertical side is welded to the outer steel plate 6 of the frame column.

[0029] 3. According to the preset arc arrangement, an arc-shaped channel for the left prestressed tendon is reserved along the frame column 1 and the left frame beam 2; an arc-shaped channel for the right prestressed tendon is reserved along the frame column 1 and the right frame beam 2.

[0030] 4. The first arc-shaped unbonded prestressed tendon 3 is cut on site and arranged in an arc shape in the arc-shaped channel of the left prestressed tendon, and anchored at both ends. The second arc-shaped unbonded prestressed tendon 4 is cut on site and arranged in an arc shape in the arc-shaped channel of the right prestressed tendon, and anchored at both ends.

[0031] By calculation, it is ensured that the first arc-shaped unbonded prestressed tendons 3 and the second arc-shaped unbonded prestressed tendons 4 will not interfere with the vertical prestressed steel rod.

[0032] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A reinforced concrete beam-column joint reinforcement structure, comprising a frame column (1) and a frame beam (2), wherein the frame column (1) and the frame beam (2) are vertically connected, and characterized in that: The frame column (1) and the left frame beam (2) are provided with a left prestressed tendon arc channel, in which a first arc-shaped non-bonded prestressed tendon (3) is embedded, and two ends of the first arc-shaped non-bonded prestressed tendon (3) are respectively anchored on the second vertical surface (12) of the frame column (1) and the first top surface (21) of the left frame beam (2); the frame column (1) and the right frame beam (2) are provided with a right prestressed tendon arc channel, in which a second arc-shaped non-bonded prestressed tendon (4) is embedded, and two ends of the second arc-shaped non-bonded prestressed tendon (4) are respectively anchored on the first vertical surface (11) of the frame column (1) and the second top surface (22) of the right frame beam (2).

2. The reinforced concrete beam-column joint reinforcement structure according to claim 1, characterized in that: The first arc-shaped non-bonded prestressed tendon (3) forms a convex portion facing the ground, and the second arc-shaped non-bonded prestressed tendon (4) forms a convex portion also facing the ground.

3. The reinforced concrete beam-column joint reinforcement structure according to claim 1 or 2, characterized in that: An anchor A (31) is provided at both ends of the first arc-shaped unbonded prestressed tendon (3) so as to be fixed on the second vertical surface (12) and the first top surface (21) of the left frame beam (2); an anchor B (41) is provided at both ends of the second arc-shaped unbonded prestressed tendon (4) so ​​as to be fixed on the first vertical surface (11) of the frame column (1) and the second top surface (22) of the right frame beam (2).

4. The reinforced concrete beam-column joint reinforcement structure according to claim 3 is characterized in that: The left side surfaces, bottom surface and top surface of the connection node between the frame column (1) and the frame beam (2) are provided with a left frame beam outer steel plate (51); the right side surfaces, bottom surface and top surface of the connection node between the frame column (1) and the frame beam (2) are provided with a right frame beam outer steel plate (52); the frame column (1) is provided with a frame column outer steel plate (6) around it; the left frame beam outer steel plate (51) on the bottom surface of the left frame beam (2) and the frame column outer steel plate (6) covering the first vertical surface (11) of the frame column (1) are provided with a plurality of parallel and spaced reinforcing ribs (7); the right frame beam outer steel plate (52) on the bottom surface of the right frame beam (2) and the frame column outer steel plate (6) covering the second vertical surface (12) of the frame column (1) are also provided with a plurality of parallel and spaced reinforcing ribs (7); the reinforcing ribs (7) are located below the first arc-shaped unbonded prestressed tendons (3) and the second arc-shaped unbonded prestressed tendons (4).

5. The reinforced concrete beam-column joint reinforcement structure according to claim 4, characterized in that: The reinforcing rib (7) is a right triangle, the horizontal side of which is welded to the outer steel plate (51) of the left frame beam or the outer steel plate (52) of the right frame beam, and the vertical side of which is welded to the outer steel plate (6) of the frame column.

6. The reinforced concrete beam-column joint reinforcement structure according to claim 5, characterized in that: It also includes a plurality of horizontal prestressed steel bars, which respectively pass through the frame column outer steel plates (6) on the left and right sides of the column, and are anchored on the frame column outer steel plates (6) on the left and right sides of the column to apply prestress.

7. The reinforced concrete beam-column joint reinforcement structure according to claim 6, characterized in that: It also includes a plurality of vertical prestressed steel bars, which respectively pass through the left frame beam outer steel plate (51) or the right frame beam outer steel plate (52) on the top and bottom surfaces of the frame beam, and are anchored on the left frame beam outer steel plate (51) or the right frame beam outer steel plate (52) on the top and bottom surfaces to apply prestress.

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