CN217998375U - Reinforcing structure for reducing stress of eccentric beam-column joint - Google Patents
Reinforcing structure for reducing stress of eccentric beam-column joint Download PDFInfo
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- CN217998375U CN217998375U CN202221825304.8U CN202221825304U CN217998375U CN 217998375 U CN217998375 U CN 217998375U CN 202221825304 U CN202221825304 U CN 202221825304U CN 217998375 U CN217998375 U CN 217998375U
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Abstract
The utility model provides a reinforcement structure for reducing eccentric beam column node atress, including eccentric beam column node of reinforced concrete, floor and reinforcement hidden beam, set up the hidden beam parallel with the frame roof beam in the floor of the eccentric opposite side of frame post of eccentric beam column node. The eccentricity of the beam column causes additional torque and additional bending moment to be generated in a node core area, so that the effective width of the section of the node core area is reduced, the shearing bearing capacity of the node is reduced, and the shearing bearing capacity of the node often does not meet the standard requirement. The utility model discloses from the atress mechanism of eccentric beam column node, come the additional moment of torsion and the additional moment of flexure that the balance arouses by beam column eccentricity through add the hidden beam parallel with the frame roof beam in the floor of the eccentric opposite side of post to reduce beam column eccentricity, increase the effective width of the core district cross-section of node, improve the node and receive the shear capacity. The utility model provides a reinforcement structure can effectively improve node district atress situation, improves the degree of safety of eccentric node, and its simple structure makes things convenient for the construction.
Description
Technical Field
The utility model relates to a building structure field, concretely relates to a reinforcement structure for reducing eccentric beam column node atress.
Background
In order to meet the building function requirements and guarantee the indoor decoration effect as much as possible in the super high-rise apartment, the frame columns are usually long rectangles, and the side beams need to be flush with the outer sides of the frame columns, so that the center line of the beam columns is eccentric and large. Under the action of horizontal earthquake and wind load, the eccentric beam-column joint is subjected to the action of bending moment, shearing force and axial force and is also subjected to the action of additional torque and additional bending moment generated by the frame beam. The stress state of the node core area is very complex, the beam column eccentricity causes the node core area to generate additional torque and additional bending moment, the effective width of the node core area is reduced, the shearing bearing capacity of the node is reduced, and the damage phenomenon of the eccentric node core area occurs in multiple earth earthquakes at home and abroad.
The beam width of the beam end is increased by generally adopting a beam end horizontal haunching mode in engineering design, the shearing range of a node is enlarged, the effective width of the node is increased, and the strength, ductility and energy dissipation capability of a core area of the eccentric node are improved. However, for super high-rise apartment projects, horizontal haunching of beam ends is not accepted by buildings and owners, the influence of the large eccentricity on beam-column joints is neglected during structural design, certain potential safety hazards are formed for the joint, and the influence of the beam-column eccentricity on the bearing capacity of the joints is not neglected. The utility model provides a reinforcement structure can effectively improve node district atress situation, improves the degree of safety of eccentric node, and its simple structure makes things convenient for the construction.
Disclosure of Invention
The utility model provides a reinforcement structure for reducing eccentric beam column node atress can effectively improve node district atress situation, solves the beam column node and leads to the effective width in node core space cross-section to reduce because of off-centre, and the anti problem of shearing bearing capacity not enough.
In order to realize the above object, the utility model provides a reinforcement structure for reducing eccentric beam column node atress, including the eccentric beam column node of reinforced concrete, floor and reinforcement hidden beam, set up in the floor of the eccentric opposite side of frame post of eccentric beam column node and come the additional moment of torsion and the additional moment of bending that balanced by the eccentric arouse of beam column with the parallel hidden beam of frame roof beam to reduce beam column eccentricity, increase the effective width of the core district section of node, improve the node and receive the shear capacity.
Furthermore, the hidden beam edge is flush with the column edge on the other eccentric side of the frame column, and the width of the hidden beam is 1/4 of the height of the frame column and is not less than 400mm.
Furthermore, the hidden beam is internally provided with hidden beam longitudinal bars and stirrups, the hidden beam longitudinal bar area is determined through calculation, the stirrups are determined according to the structural requirements of the standard middle beam, the diameter of each stirrup is not less than 8mm, the limb distance is not more than 250mm, and the distance is not more than 200mm.
Furthermore, the hidden beam longitudinal ribs need to be arranged in the columns in a penetrating mode.
Further, the thickness (height of the hidden beam) of the floor slab is not less than 120mm.
Drawings
FIG. 1 is a schematic plan view of a reinforcing construction;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
the labels in the figure are: 1. frame column, 2, frame beam, 3, reinforcing hidden beam, 4, floor slab, 5, hidden beam longitudinal bar, 6, hidden beam stirrup
Detailed Description
The invention is further described with reference to the accompanying drawings and the embodiments.
Referring to fig. 1 and 2, the utility model discloses a reinforced concrete eccentric beam column node, floor and reinforcement hidden beam set up the hidden beam parallel with the frame roof beam in the floor of the eccentric opposite side of frame post of eccentric beam column node. According to the reinforcing structure, the hidden beam 3 parallel to the frame beam 2 is additionally arranged in the floor slab on the other eccentric side of the frame column 1 to balance the additional torque and the additional bending moment caused by the eccentricity of the beam column, so that the eccentricity of the beam column is reduced, the effective width of the section of the core area of the node is increased, and the shearing bearing capacity of the node is improved.
The hidden beam 3 is positioned on the other eccentric side of the frame column 1, the outer edge of the hidden beam 3 is flush with the column edge on the other eccentric side of the frame column 1, and the hidden beam 3 is parallel to the frame beam 2. The width of the hidden beam 3 is 1/4 of the height of the frame column 1 and is not less than 400mm.
Hidden beam longitudinal bars 5 and stirrups 6 are arranged in the hidden beam 3, the area of the hidden beam longitudinal bars 5 is determined through calculation, the stirrups 6 are determined according to the structural requirements of the standard center sill, the diameter of each stirrup 6 is not less than 8mm, the limb distance is not more than 250mm, and the distance is not more than 200mm.
The longitudinal bars 5 of the hidden beam 3 need to be arranged in the frame column 1 in a through way.
The thickness of the floor slab 4 (the height of the hidden beam 3) is not less than 120mm.
Claims (5)
1. The utility model provides a reinforcement structure for reducing eccentric beam column node atress, includes eccentric beam column node of reinforced concrete, floor and reinforcement hidden beam, its characterized in that: and arranging a hidden beam parallel to the frame beam in the floor slab on the other eccentric side of the frame column of the reinforced concrete eccentric beam column node.
2. A reinforcing construction for reducing stress on an eccentric beam-column joint as recited in claim 1, wherein: the hidden beam edge is flush with the column edge on the other eccentric side of the frame column, and the width of the hidden beam is 1/4 of the height of the frame column and is not less than 400mm.
3. A reinforcing construction for reducing stress on an eccentric beam-column joint as recited in claim 1, wherein: the hidden beam longitudinal bars and the stirrups are arranged in the hidden beam, the area of the hidden beam longitudinal bars is determined through calculation, the stirrups are determined according to the structural requirements of the standard middle beam, the diameter of each stirrup is not less than 8mm, the limb distance is not more than 250mm, and the distance is not more than 200mm.
4. A reinforcing construction for reducing stress on an eccentric beam-column joint as recited in claim 3, wherein: the hidden beam longitudinal bars need to be arranged in the columns in a penetrating mode.
5. A reinforcing construction for reducing stress on an eccentric beam-column joint as recited in claim 1, wherein: the height of the dark beam is not less than 120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221825304.8U CN217998375U (en) | 2022-07-15 | 2022-07-15 | Reinforcing structure for reducing stress of eccentric beam-column joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221825304.8U CN217998375U (en) | 2022-07-15 | 2022-07-15 | Reinforcing structure for reducing stress of eccentric beam-column joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217998375U true CN217998375U (en) | 2022-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221825304.8U Active CN217998375U (en) | 2022-07-15 | 2022-07-15 | Reinforcing structure for reducing stress of eccentric beam-column joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217998375U (en) |
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2022
- 2022-07-15 CN CN202221825304.8U patent/CN217998375U/en active Active
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