CN216810241U - Unequal-strength beam column joint based on single steel plate hoop restrained concrete superposed short column - Google Patents
Unequal-strength beam column joint based on single steel plate hoop restrained concrete superposed short column Download PDFInfo
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- CN216810241U CN216810241U CN202123362667.0U CN202123362667U CN216810241U CN 216810241 U CN216810241 U CN 216810241U CN 202123362667 U CN202123362667 U CN 202123362667U CN 216810241 U CN216810241 U CN 216810241U
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 230000002787 reinforcement Effects 0.000 claims abstract description 31
- 238000003466 welding Methods 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model discloses a non-uniform-strength beam column joint based on a single steel plate hoop constrained concrete superposed short column. Node core area adopts the same first intensity grade concrete placement with the beam slab to interior single steel sheet hoop restraint concrete coincide short column of establishing, single steel sheet hoop restraint concrete coincide short column is equipped with single steel sheet hoop and short longitudinal reinforcement. The node core area is cast by adopting the concrete with the same first strength grade as the beam slab, so that the construction difficulty of the beam-column node of the concrete with different strengths can be reduced; the node is internally provided with the single steel plate hoop restraining concrete superposed short column, so that the transverse deformation of the concrete in the node core area can be restrained, the bearing capacity, ductility and energy consumption capacity of the node core area are improved, the anti-seismic performance of the node is improved, the influence on the structure caused by the reduction of the concrete strength in the node core area is eliminated, and the reinforcement of the node core area is realized.
Description
Technical Field
The utility model relates to an unequal strength concrete beam-column node, in particular to an unequal strength beam-column node based on a single steel plate hoop restrained concrete superposed short column, and belongs to the technical field of reinforced concrete structures in constructional engineering.
Background
Along with the development and progress of the construction engineering cause of China, high-rise buildings are more and more, high-strength concrete is more and more widely used in engineering, in actual engineering, the strength of column concrete is generally higher than that of beam slab concrete, a node core area needs to be poured according to the column concrete, and a separation measure is taken in a concrete junction area with unequal strength; in addition, the interface is a stressed weak link and is positioned in a plastic hinge area of the beam, so that the shearing force and the bending moment are large, a construction joint which is not good and easy to process is left, and the bearing capacity of the beam can be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide an unequal strength beam column node based on a single steel plate hoop restraining concrete overlapping short column.
The utility model realizes the purpose through the following technical scheme: unequal strength beam column node based on single steel plate hoop constraint concrete overlapping short column, comprises
The concrete column forms a main body structure of the beam-column joint and consists of first strength grade concrete formed by horizontal pouring and second strength grade concrete vertically poured on the upper side and the lower side of the first strength grade concrete respectively;
the column longitudinal reinforcements are vertically embedded in the concrete column of the beam-column joint, and are provided with a plurality of reinforcement cages which are bundled and fixed by column combined stirrups to form columns;
the single steel plate hoop constraint concrete superposed short column is internally arranged in a reinforcement cage formed by the column longitudinal bars and the column combined hoop bars which are longitudinally arranged and consists of a single steel plate hoop and short longitudinal bars;
the single steel plate hoop is formed by welding a steel ring and steel plates into a whole, and the two steel plates are arranged in parallel and connected in the steel ring;
the single steel plate hoops and the short longitudinal ribs are arranged in the first strength grade concrete at the node intersection part and axially distributed and extend into the upper and lower columns, and at least two single steel plate hoops are arranged in the second strength grade concrete of the upper and lower columns to form a single steel plate hoop restraining concrete overlapping short column.
As a still further scheme of the utility model: the second strength grade concrete design strength is more than two grades higher than the low strength grade concrete design strength.
As a still further scheme of the utility model: the single steel plate hooping columns are sequentially arranged by rotating 90 degrees from bottom to top along the column axis direction, and the net spacing is not more than 80 mm.
As a still further scheme of the utility model: the single steel plate hoop is bound on the short longitudinal rib to form a whole.
The utility model has the beneficial effects that: the core area of the node is poured by the concrete with the same first strength grade as the beam slab, so that the construction difficulty of the beam-column node of the concrete with different strengths can be reduced; the interior of the node is provided with the single steel plate hoop for restraining the concrete superposed short column, so that the transverse deformation of the concrete in the node core area can be restrained, the bearing capacity, the ductility and the energy consumption capability of the node core area are improved, the anti-seismic performance of the node is improved, and the influence on the structure caused by the reduction of the concrete strength in the node core area is eliminated so as to realize the reinforcement of the node core area.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the column of FIG. 1 with a single steel plate hoop restraining concrete overlapping stub;
FIG. 3 is a drawing of a single steel plate hoop of the present invention;
FIG. 4 is a structural diagram of a beam-column joint with unequal strength;
in the figure: 1. the column longitudinal reinforcement, 2, column combined stirrup, 3, first strength grade concrete, 4, second strength grade concrete, 5, single steel plate hoop, 501, steel ring, 502, steel plate, 6, short longitudinal reinforcement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 4, an unequal strength beam-column joint based on a single steel plate hoop constrained concrete overlapping short column comprises
The concrete column forms a main body structure of the beam-column joint and consists of first strength grade concrete 3 formed by horizontal pouring and second strength grade concrete 4 respectively vertically poured on the upper side and the lower side of the first strength grade concrete 3;
the column longitudinal reinforcements 1 are vertically embedded in the concrete column of the beam-column joint, and are provided with a plurality of reinforcement cages which are bundled and fixed by the column combined stirrups 2 to form a column;
the single steel plate hoop restrained concrete superposed short column is internally arranged in a reinforcement cage formed by the column longitudinal reinforcement 1 and the column combined hoop reinforcement 2 which are longitudinally arranged and consists of a single steel plate hoop 5 and a short longitudinal reinforcement 6;
the single steel plate hoop 5 is formed by welding a steel ring 501 and steel plates 502 into a whole, and the two steel plates 502 are arranged in parallel and connected in the steel ring 501;
the single steel plate hoops 5 and the short longitudinal ribs 6 are arranged in the first strength grade concrete 3 at the node intersection part, are distributed in the column axial direction and extend into the upper column and the lower column, and at least two single steel plate hoops 5 are arranged in the second strength grade concrete 4 of the upper column and the lower column to form a single steel plate hoop restraining concrete overlapping short column.
In the embodiment of the present invention, the second strength grade concrete 4 has a design strength higher than that of the first strength grade concrete 3 by two or more levels. It should be noted that: in the field of building construction, the second strength grade concrete 4 is a higher strength grade concrete, and the first strength grade concrete 3 is a lower strength grade concrete.
In the embodiment of the utility model, the single steel plate hoops 5 are sequentially arranged along the axial direction of the column by rotating 90 degrees from bottom to top, and the net spacing is not more than 80mm, so that the bearing capacity of the reinforced concrete beam-column joint is improved.
In the embodiment of the utility model, the single steel plate hoop 5 is bound on the short longitudinal rib 6 to form a whole, so that the binding efficiency is high.
Example two
A construction method of an unequal-strength beam column node based on a single steel plate hoop restrained concrete superposed short column comprises the following steps:
step one, binding and forming a column longitudinal bar 1, a column combined stirrup 2, a single steel plate hoop 5 and a short longitudinal bar 6 according to a reinforcement distribution diagram to form a reinforcement cage of the column, wherein the first single steel plate hoop 5 is bound on the column combined stirrup 2, and then the short longitudinal bar 6 and the single steel plate hoop 5 are bound and fixed into a whole;
step two, binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the stirrups in the node core area, the single steel plate hoops 5 and the short longitudinal reinforcements 6 according to the reinforcement distribution diagram to form a beam plate and a reinforcement cage in the node core area;
step three, pouring second strength grade concrete 4 of the lower column;
pouring first strength grade concrete 3 of the node core area and the beam slab;
and step five, repeating the steps.
The working principle is as follows: when the unequal-strength beam column node based on the single-steel-plate hoop restrained concrete superposed short column is used, according to a reinforcement allocation diagram, a column longitudinal rib 1, a column combined hoop rib 2, a single-steel-plate hoop 5 and a short longitudinal rib 6 are bound and formed to form a reinforcement cage of the column, wherein the first single-steel-plate hoop 5 is bound on the column combined hoop rib 2, and then the short longitudinal rib 6 and the single-steel-plate hoop 5 are bound and fixed into a whole; binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrup, the node core area stirrup, the single steel plate hoop 5 and the short longitudinal reinforcement 6 according to a reinforcement distribution diagram to form a beam plate and a node core area reinforcement cage; pouring the second strength grade concrete 4 of the lower column; pouring first strength grade concrete 3 of the node core area and the beam slab; and repeating the steps.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. An unequal strength beam column node based on single steel plate hoop constraint concrete overlapping short column is characterized by comprising
The concrete column forms a main body structure of the beam-column joint and consists of first strength grade concrete (3) formed by horizontal pouring and second strength grade concrete (4) respectively vertically poured on the upper side and the lower side of the first strength grade concrete (3);
the column longitudinal reinforcements (1) are vertically embedded in the concrete column of the beam-column joint, and are provided with a plurality of reinforcement cages which are bundled and fixed by column combined stirrups (2) to form columns;
the single steel plate hoop restrained concrete superposed short column is internally arranged in a reinforcement cage formed by the column longitudinal bars (1) and the column combined hoop bars (2) which are longitudinally arranged, and consists of a single steel plate hoop (5) and short longitudinal bars (6);
the single steel plate hoop (5) is formed by welding a steel ring (501) and steel plates (502) into a whole, and the two steel plates (502) are arranged in parallel and connected in the steel ring (501);
the single steel plate hoops (5) and the short longitudinal ribs (6) are arranged in the first strength grade concrete (3) at the node intersection positions and are axially distributed and extend into the upper column and the lower column, and at least two single steel plate hoops (5) are arranged in the second strength grade concrete (4) of the upper column and the lower column to form a single steel plate hoop constraint concrete overlapping short column.
2. The unequal strength beam column node based on the single steel plate hoop restrained concrete superposed short column as claimed in claim 1, wherein: the second strength grade concrete (4) has a design strength higher than that of the first strength grade concrete (3) by more than two grades.
3. The unequal strength beam column node based on the single steel plate hoop restrained concrete superposed short column as claimed in claim 1, wherein: the single steel plate hoops (5) are sequentially arranged by rotating 90 degrees from bottom to top along the column axis direction, and the net spacing is not more than 80 mm.
4. The unequal strength beam column node based on the single steel plate hoop restrained concrete superposed short column as claimed in claim 1, wherein: the single steel plate hoop (5) is bound on the short longitudinal rib (6) to form a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123362667.0U CN216810241U (en) | 2021-12-29 | 2021-12-29 | Unequal-strength beam column joint based on single steel plate hoop restrained concrete superposed short column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123362667.0U CN216810241U (en) | 2021-12-29 | 2021-12-29 | Unequal-strength beam column joint based on single steel plate hoop restrained concrete superposed short column |
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| CN216810241U true CN216810241U (en) | 2022-06-24 |
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| CN202123362667.0U Active CN216810241U (en) | 2021-12-29 | 2021-12-29 | Unequal-strength beam column joint based on single steel plate hoop restrained concrete superposed short column |
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2021
- 2021-12-29 CN CN202123362667.0U patent/CN216810241U/en active Active
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