CN214090322U - Anti-seismic concrete reinforcement frame structure - Google Patents
Anti-seismic concrete reinforcement frame structure Download PDFInfo
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- CN214090322U CN214090322U CN202022344014.9U CN202022344014U CN214090322U CN 214090322 U CN214090322 U CN 214090322U CN 202022344014 U CN202022344014 U CN 202022344014U CN 214090322 U CN214090322 U CN 214090322U
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Abstract
The utility model provides an antidetonation concrete reinforcing bar frame construction, including reinforced concrete column and reinforced concrete frame roof beam, the tip of reinforced concrete frame roof beam is equipped with pre-buried steel sheet, and pre-buried steel sheet tip is equipped with the connecting plate, and it is fixed that the connecting plate passes through the pull rod with reinforced concrete column, and reinforced concrete frame roof beam is equipped with the beam-ends concrete that the baffle is with reinforced concrete frame roof beam in being close to the tip of reinforced concrete column and separates along its height. The structure can reduce the influence of the reinforced concrete floor on the strength and rigidity of the reinforced concrete frame beam, really realize the anti-seismic mechanism of 'strong columns and weak beams', and improve the overall anti-seismic capacity of the frame.
Description
Technical Field
The utility model belongs to concrete reinforcement frame construction field, in particular to antidetonation concrete reinforcement frame construction.
Background
Beam-column joints of reinforced concrete frame structures in building construction are key structural components. The seismic performance of the node core area is a key factor influencing the seismic performance of the reinforced concrete structure.
At present, three standard fortification requirements are provided by the national seismic standard, namely that small earthquakes are not damaged, medium earthquakes can be repaired and large earthquakes are not fallen. In order to better guarantee the fortification requirement of a cast-in-place concrete frame structure of 'great earthquake incessance', the current specification provides the design rule of 'strong column and weak beam'. The standard is the design requirement that the frame structure plastic hinge appears at the beam end, so as to improve the deformation capacity of the structure and prevent the structure from collapsing under the action of a strong earthquake. The method is characterized in that the design bending moment of the column is artificially amplified, and the beam is not amplified. The aim is that after adjustment, the column has a stronger bending resistance than before, while the beam remains unchanged. I.e. the column capacity is increased to a greater extent than the beam. Thus, when the beam and the column are stressed together, the beam end can yield before the column.
However, in the process of investigating earthquake damage in actual earthquakes, many frame structures meet the earthquake-proof design standard, but still have more column ends with plastic hinges, so that a failure mechanism of 'strong beams and weak columns' is formed. The reasons for this failure mode are many, and one of the non-negligible reasons is: when the frame structure is designed according to the existing anti-seismic standard in China, only the anti-bending bearing capacity of the beam is considered, and the additional anti-bending capacity provided by the steel bars in the floor slab at the joint part of the beam column is not considered; on the other hand, the floor slab, the beam and the column form an integral frame structure, the floor slab can improve the rigidity of the beam to a certain extent under the constraint action on the deformation of the beam, and the beam is slowed down to form a plastic hinge, so that the plastic hinge is firstly generated at the column end in the earthquake.
Disclosure of Invention
The utility model aims to solve the technical problem that an antidetonation concrete reinforcing bar frame construction is provided, can reduce the reinforced concrete floor to the intensity of reinforced concrete frame roof beam and the influence of rigidity, really realize the antidetonation mechanism of "strong post weak beam", improve the whole shock resistance of frame.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides an antidetonation concrete reinforcing bar frame construction, includes reinforced concrete column and reinforced concrete frame roof beam, the tip of reinforced concrete frame roof beam is equipped with pre-buried steel sheet, and pre-buried steel sheet tip is equipped with the connecting plate, and it is fixed that the connecting plate passes through the pull rod with reinforced concrete column, and reinforced concrete frame roof beam is close to being equipped with the roof beam end concrete of reinforced concrete frame roof beam in the tip of reinforced concrete column and separates along its height.
In the preferred scheme, the length of the partition plate is 1.5-2 times of the height of the reinforced concrete frame beam.
In a preferred scheme, the partition plate is made of a light material.
In a preferred scheme, the material of the partition board is a wood pattern, a foam board or a high polymer board.
In the preferred scheme, the beam steel bar end part of the reinforced concrete frame beam is bent towards the inside of the beam to form a step, and the partition plate is placed on the step.
In the preferable scheme, the bending angle of the beam steel bar end part of the reinforced concrete frame beam is a, and tan a is less than or equal to 1/6.
In the preferred scheme, an L-shaped plate is arranged on one side of the reinforced concrete column and is connected with the reinforced concrete column and the reinforced concrete frame beam through expansion bolts.
The utility model provides a pair of anti-seismic concrete reinforcing bar frame construction utilizes the baffle to separate the concrete of beam-ends to can reduce the reinforced concrete floor to the intensity of reinforced concrete frame roof beam and the influence of rigidity, really realize the antidetonation mechanism of "strong post weak beam", improve the whole shock resistance of frame. Through setting up pre-buried steel sheet, connecting plate and 6 structures of "L" shaped plate, can improve the joint strength of the connected node between reinforced concrete post and the reinforced concrete frame roof beam, realize connected node's antidetonation and consolidate.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of the present invention;
in the figure: the concrete-filled steel column comprises a reinforced concrete column 1, a reinforced concrete frame beam 2, a pull rod 3, a partition plate 4, a step 5, an L-shaped plate 6, a pre-buried steel plate 7 and a connecting plate 8.
Detailed Description
As shown in fig. 1-2, an anti-seismic concrete reinforced frame structure, including reinforced concrete column 1 and reinforced concrete frame roof beam 2, reinforced concrete frame roof beam 2's tip is equipped with pre-buried steel sheet 7, and pre-buried steel sheet 7 tip is equipped with connecting plate 8, and pre-buried steel sheet 7 and the frame attach in the reinforced concrete frame roof beam 2, connecting plate 8 can set up to structure as an organic whole with pre-buried steel sheet 7, and connecting plate 8 is fixed through pull rod 3 with reinforced concrete column 1, and reinforced concrete frame roof beam 2 is equipped with baffle 4 in being close to the tip of reinforced concrete column 1 and separates the beam-ends concrete of reinforced concrete frame roof beam 2 along its height.
Specifically, the beam reinforcement end of the reinforced concrete frame beam 2 is bent inwards to form a step 5, and the partition plate 4 is placed on the step 5.
The bending angle of the beam steel bar end part of the reinforced concrete frame beam 2 is a, and tan a is not more than 1/6.
Through the bending of the end part of the steel bar inside the beam, the installation of the partition plate 4 is convenient when the reinforced concrete frame beam 2 is prefabricated.
In this embodiment, the length of the partition plate 4 is 1.5 to 2 times the height of the reinforced concrete frame beam 2.
Through setting up baffle 4, just can fully carry out upper and lower layer with the concrete of beam-ends along the self direction of height of frame roof beam and separate to can reduce the influence of reinforced concrete floor to the intensity and the rigidity of reinforced concrete frame roof beam, make this frame construction realize the antidetonation mechanism of "strong post weak beam".
Preferably, the partition plate 4 is made of a light material. The increase of the load at the beam end caused by the material of the diaphragm can be prevented.
Specifically, the partition board 4 is made of a wood pattern, a foam board or a high polymer board.
Preferably, as shown in fig. 1, an "L" shaped plate 6 is disposed on one side of the reinforced concrete column 1, and the "L" shaped plate 6 is connected to the reinforced concrete column 1 and the reinforced concrete frame 2 by expansion bolts.
Through setting up "L" shaped plate 6, support and consolidate between reinforced concrete post and the reinforced concrete roof beam, played the effect of carrying out the seismic strengthening to reinforced concrete post node.
Claims (7)
1. The utility model provides an antidetonation concrete reinforcing bar frame construction, includes reinforced concrete post (1) and reinforced concrete frame roof beam (2), its characterized in that: the end of the reinforced concrete frame beam (2) is provided with a pre-buried steel plate (7), the end of the pre-buried steel plate (7) is provided with a connecting plate (8), the connecting plate (8) is fixed with the reinforced concrete column (1) through a pull rod (3), and a partition plate (4) is arranged in the end of the reinforced concrete frame beam (2) close to the reinforced concrete column (1) to separate the beam end concrete of the reinforced concrete frame beam (2) along the height of the beam end concrete.
2. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 1, characterized in that: the length of the partition plate (4) is 1.5-2 times of the height of the reinforced concrete frame beam (2).
3. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 1, characterized in that: the partition plate (4) is made of light materials.
4. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 3, characterized in that: the partition board (4) is made of a wood mold, a foam board or a high polymer board.
5. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 1, characterized in that: the beam steel bar end part of the reinforced concrete frame beam (2) is bent towards the inside of the beam to form a step (5), and the partition plate (4) is placed on the step (5).
6. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 1, characterized in that: the bending angle of the beam steel bar end part of the reinforced concrete frame beam (2) is a, and tan a is not more than 1/6.
7. An earthquake-resistant concrete reinforcing steel bar frame structure according to claim 1, characterized in that: an L-shaped plate (6) is arranged on one side of the reinforced concrete column (1), and the L-shaped plate (6) is connected with the reinforced concrete column (1) and the reinforced concrete frame beam (2) through expansion bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022344014.9U CN214090322U (en) | 2020-10-20 | 2020-10-20 | Anti-seismic concrete reinforcement frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022344014.9U CN214090322U (en) | 2020-10-20 | 2020-10-20 | Anti-seismic concrete reinforcement frame structure |
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| CN214090322U true CN214090322U (en) | 2021-08-31 |
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| CN202022344014.9U Active CN214090322U (en) | 2020-10-20 | 2020-10-20 | Anti-seismic concrete reinforcement frame structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863550A (en) * | 2021-10-21 | 2021-12-31 | 中国地震局工程力学研究所 | Anti-seismic structure capable of avoiding influence of cast-in-place floor on damage mechanism of strong column and weak beam |
-
2020
- 2020-10-20 CN CN202022344014.9U patent/CN214090322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113863550A (en) * | 2021-10-21 | 2021-12-31 | 中国地震局工程力学研究所 | Anti-seismic structure capable of avoiding influence of cast-in-place floor on damage mechanism of strong column and weak beam |
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