CN212613015U - Reinforced concrete frame strong column weak beam node structure - Google Patents
Reinforced concrete frame strong column weak beam node structure Download PDFInfo
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- CN212613015U CN212613015U CN202020715434.0U CN202020715434U CN212613015U CN 212613015 U CN212613015 U CN 212613015U CN 202020715434 U CN202020715434 U CN 202020715434U CN 212613015 U CN212613015 U CN 212613015U
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Abstract
The utility model relates to a reinforced concrete frame strong column weak beam node structure, a serial communication port, strengthen the district section including reinforced concrete frame roof beam, reinforced concrete frame post, frame beam tip strengthens the district section and is reinforced concrete frame roof beam section local increase and the local enhancement part of arrangement of reinforcement that reinforced concrete frame roof beam is being close to reinforced concrete frame post certain limit within a definite range, the local increase of roof beam section is that this within a definite range roof beam section width increases and roof beam section height increases, the top surface and the frame roof beam top surface parallel and level that are connected of district section are strengthened to the tip. The utility model has the advantages of, concrete frame node can be strengthened, and the frame roof beam weakens relatively in variable cross section department bearing capacity, and frame roof beam plasticity hinge position leaves the node district under the macroseism effect to realize the roof beam hinge and destroy the mechanism, reach the design purpose of "strong post weak beam".
Description
Technical Field
The utility model relates to a reinforced concrete building structure system specifically is a reinforced concrete frame strong column weak beam node structure.
Background
The reinforced concrete frame structure is widely used in civil and industrial buildings because of low cost, convenience in construction, flexibility in structural arrangement and capability of forming a large space. However, the structural system is easy to collapse and damage under the action of a large earthquake, which causes casualties and heavy property loss, and the house designed according to the specification also has a large amount of collapse and damage in earthquakes. The existing 'building earthquake-resistant design standard' in China greatly improves the earthquake-resistant bearing capacity of a frame column by adjusting the column end bending moment and the shear force increasing coefficient of a frame structure so as to achieve the aim of earthquake fortification of 'strong columns and weak beams'. However, the actually constructed frame structure house has the reinforcing effect of the floor slab, the filler wall and other factors on the rigidity and the bending resistance bearing capacity of the frame beam, does not achieve the expected anti-seismic effect, and shows the destructive characteristic of 'strong beam and weak column'. In the engineering, how to convert 'strong beam weak column' of a frame structure into 'strong beam weak beam' does not have a unified treatment method, one measure is to adopt holes at plate corners to reduce the contribution of plates to the rigidity of the frame beam, and reduce the constraint of a filler wall on the deformation of the frame beam by starting with filler wall materials or a masonry mode. The methods enable the anti-seismic bearing capacity of the beam to be weakened to a certain degree, and make a step towards the design intention of the strong column and weak beam, but do not directly realize the strong column and weak beam from the principle and structure. Therefore, in order to overcome the above structural defects, it is necessary to provide a concrete frame strong column and weak beam node structure with reasonable stress and simple structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reinforced concrete frame strong column weak beam node structure to solve the problem that provides among the above-mentioned background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a reinforced concrete frame strong column weak beam node structure, strengthens the district section including reinforced concrete frame roof beam, reinforced concrete frame column, frame beam tip strengthens the district section and is reinforced concrete frame roof beam in the local increase of roof beam section and the local part of strengthening a reinforcement that is close to reinforced concrete frame column certain limit, the local increase of roof beam section is that this within range roof beam section width increases and the high increase of roof beam section, the top surface and the frame roof beam top surface parallel and level of being connected of district section are strengthened to the tip.
In order to more effectively form a strong column and weak beam node of a frame structure, an upper negative rib of a frame beam support is obtained by calculating the bending moment of the section at the intersection of a frame beam and an end reinforcing section, and is cut off and anchored in a column according to the construction requirement, a middle steel bar of the frame beam span is still anchored into the frame column according to the construction requirement, a stirrup of the frame beam meets the calculation and construction requirements, and the design of the frame column still meets the anti-seismic requirement.
In order to more effectively form a strong column and weak beam node of the frame structure, the reinforced section at the end part of the frame beam is added with an upper negative bar, the lower part of the frame beam is added with a construction reinforcing bar, and a reinforcement section stirrup meets the calculation and construction requirements.
As a structural style of the present invention, the reinforced concrete frame beam aligns with the center of the reinforced concrete frame column, the width after the section width of the frame beam end reinforcing section is widened to both sides for the frame beam.
As the utility model discloses another kind of structural style, reinforced concrete frame roof beam aligns on one side with reinforced concrete frame post side, the width after the cross-sectional width of frame beam tip reinforcing section is widened to the opposite side for the frame roof beam.
The utility model has the advantages that: the reinforced concrete frame beam end part is added with the reinforced section, so that a concrete frame joint can be reinforced, the frame beam generates stress concentration at a variable cross section under the action of a large earthquake, the joint is cracked first, the plastic hinge position of the frame beam is moved outwards away from the joint area, a beam hinge mechanism is formed, and the design purpose of a strong column and a weak beam is achieved. The utility model relates to a simply, the notion is clear, and construction convenience has very high maneuverability.
Drawings
Fig. 1 is a schematic view of example 1 of the present invention, which is a partial plan view of a frame beam, a column, and a beam end reinforcing section in a certain direction of a concrete frame structure;
FIG. 2 is a cross-sectional view of the longitudinal reinforcement bar of FIG. 1;
fig. 3 is a schematic sectional view taken along line a-a of fig. 2.
Reference numerals: 1-frame beam negative rib, 2-beam end reinforcing section additional negative rib, 3-beam end reinforcing section additional lower rib, 4-beam end reinforcing section additional waist rib, 5-beam end reinforcing section waist rib tie-in rib, 6-frame beam, 7-beam end reinforcing section, 8-frame column
Detailed Description
Example 1
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a reinforced concrete frame strong column weak beam node structure, including reinforced concrete frame roof beam 6, reinforced concrete frame column 8, frame roof beam tip reinforcing section 7, the width of frame roof beam tip reinforcing section respectively increases 60mm and is less than the post width for frame roof beam both sides in this embodiment, the length of reinforcing section is 250mm, the elevation of beam tip reinforcing section is with the frame roof beam elevation of connecting, the height of beam tip reinforcing section cross section is 1.5 times of frame roof beam cross section height, the section height of frame roof beam is decided by the column pitch and takes the lower limit value or slightly is less than the lower limit value. The upper negative bar of the frame beam support is obtained by calculating the bending moment at the cross section B-B (shown in figure 2) of the frame beam and the end reinforcing section, and is cut off and anchored in the column according to the construction requirement, the steel bar in the span of the frame beam is still anchored into the frame column according to the construction requirement, the stirrup of the frame beam meets the calculation and construction requirements, and the design of the frame column still meets the anti-seismic requirement. The widened part of the reinforced section of the end part of the frame beam is added with an upper negative bar 2, the lower part of the reinforced section is added with a construction steel bar 3, and the negative bar and the stirrup of the reinforced section meet the calculation and construction requirements.
Example 2
The present embodiment is different from embodiment 1 in that: reinforced concrete frame roof beam and reinforced concrete frame post one side parallel and level, the cross-sectional width of frame roof beam tip reinforcing section is the frame roof beam and widens the width after to the opposite side, and this embodiment widens 120mm and is less than the column width to frame roof beam opposite side. The rest of the procedure was the same as in example 1.
The embodiments of the present invention are not limited thereto, and some details in the embodiments should not be construed as limitations of the present invention, and other modifications, replacements, or alterations may be made, all of which fall within the scope of the present invention.
Claims (5)
1. The utility model provides a reinforced concrete frame strong column weak beam node structure, its characterized in that strengthens the district section including reinforced concrete frame roof beam, reinforced concrete frame post, frame beam tip strengthens the district section and is reinforced concrete frame roof beam and strengthen the part near the local increase of beam section and arrangement of reinforcement part in the reinforced concrete frame post certain limit, the local increase of beam section is that this within range roof beam section width increases and the high increase of beam section, the top surface and the frame roof beam top surface parallel and level that connects of district are strengthened to the tip.
2. A reinforced concrete frame strong and weak beam node structure according to claim 1, characterized in that: the upper negative reinforcement of the frame beam support is obtained by calculating the bending moment of the section at the intersection of the frame beam and the end reinforcing section, the negative reinforcement is cut off according to the construction requirement and anchored in the column, the reinforcement in the span of the frame beam is still anchored into the frame column according to the construction requirement, the stirrup of the frame beam meets the calculation and construction requirements, and the design of the frame column still meets the earthquake-resistant requirement.
3. A reinforced concrete frame strong and weak beam node structure according to claim 1, characterized in that: the upper negative rib is added to the widened part of the frame beam end reinforcing section, the structural steel bar is added to the lower part of the frame beam end reinforcing section, and the reinforcement section stirrup meets the calculation and construction requirements.
4. A reinforced concrete frame strong and weak beam node structure according to claim 1, characterized in that: the reinforced concrete frame beam is aligned with the center of the reinforced concrete frame column, and the width of the cross section of the reinforced section at the end part of the frame beam is the width of the frame beam after being widened to two sides.
5. A reinforced concrete frame strong and weak beam node structure according to claim 1, characterized in that: the reinforced concrete frame beam aligns with one side of the side face of the reinforced concrete frame column, and the width of the cross section of the reinforced section at the end part of the frame beam is the width of the frame beam after being widened to the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020715434.0U CN212613015U (en) | 2020-04-30 | 2020-04-30 | Reinforced concrete frame strong column weak beam node structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020715434.0U CN212613015U (en) | 2020-04-30 | 2020-04-30 | Reinforced concrete frame strong column weak beam node structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212613015U true CN212613015U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020715434.0U Expired - Fee Related CN212613015U (en) | 2020-04-30 | 2020-04-30 | Reinforced concrete frame strong column weak beam node structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212613015U (en) |
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2020
- 2020-04-30 CN CN202020715434.0U patent/CN212613015U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |