CN114232813A - Unequal-strength wall beam joint based on ring rib constraint concrete superposed short column - Google Patents
Unequal-strength wall beam joint based on ring rib constraint concrete superposed short column Download PDFInfo
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- CN114232813A CN114232813A CN202111637207.6A CN202111637207A CN114232813A CN 114232813 A CN114232813 A CN 114232813A CN 202111637207 A CN202111637207 A CN 202111637207A CN 114232813 A CN114232813 A CN 114232813A
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- 239000004567 concrete Substances 0.000 title claims abstract description 95
- 230000002787 reinforcement Effects 0.000 claims abstract description 85
- 238000010276 construction Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000010586 diagram Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
Abstract
The invention discloses an unequal-strength wall beam node based on a ring reinforcement constraint concrete superposed short column, which comprises wall vertical reinforcements, wall stirrups, first strength grade concrete, second strength grade concrete, ring reinforcements and short vertical reinforcements. The node core area adopts the same first intensity grade concrete placement with the beam slab to establish ring muscle restraint concrete coincide short column in, ring muscle restraint concrete coincide short column is equipped with ring muscle and short vertical reinforcement. 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 unequal strength concrete wall beam node can be reduced; the ring rib constraint concrete superposed short column is arranged in the node, so that the transverse deformation of the concrete in the node core area can be constrained, the bearing capacity, the ductility and the energy consumption capability of the node core area are improved, the anti-seismic performance of the wall beam 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.
Description
Technical Field
The invention relates to an unequal strength wall beam node, in particular to an unequal strength wall beam node based on a ring rib constraint concrete superposed short column.
Background
With the wide use of high-strength concrete in recent years, the phenomenon that the strength of wall concrete is higher than that of beam slab concrete generally exists, national regulations are provided for the problem in principle, and separation interface construction needs to be carried out according to the requirements of the regulations under the condition that the requirements are different by two or more levels. However, due to the fluidity of concrete, the actual operation effect is not ideal, the construction is difficult, and the interface is a weak link of stress.
In order to facilitate construction and reduce cost, the concrete with the same strength grade as that of the beam slab is poured in the core area of the concrete unequal-strength wall beam joint, the strength of the concrete in the core area of the joint is reduced by the method, and certain influence is brought to the structural performance.
Disclosure of Invention
The invention aims to solve the problems and provide an unequal strength wall beam node based on a ring rib constraint concrete overlapping short column. The invention improves the node core area from the mechanism, adopts a strengthening method of internally arranging the ring reinforcement to restrain the concrete superposed short column to improve the bearing capacity, the ductility and the energy consumption capability of the unequal strength wall beam node, has reasonable construction measures and eliminates the influence of the strength reduction of the node concrete. The construction is simple and convenient, the economy is strong, the invisible safety risk is reduced, and the method is suitable for wide popularization and application in engineering.
The invention realizes the purpose through the following technical scheme: unequal strength wall beam node based on ring rib constraint concrete overlapping short column, comprising
The concrete wall forms a main body structure of the wall beam node 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 wall vertical steel bars are vertically embedded in the concrete wall body of the wall beam node, and are provided with a plurality of steel bar cages which are bound and fixed by wall hooping bars to form a wall;
the ring reinforcement constraint concrete superposed short column is internally arranged in a reinforcement cage formed by the wall vertical reinforcements and the wall stirrups which are longitudinally arranged and consists of ring reinforcements and short vertical reinforcements;
wherein the annular ribs are in a single annular rib form or a double annular rib form; the ring ribs and the short vertical steel bars are arranged in the first strength grade concrete at the node intersection positions, are distributed along the height direction of the wall and extend into the second strength grade concrete of the upper wall and the lower wall, and at least two ring ribs are arranged in the second strength grade concrete of the upper wall and the lower wall to form a ring rib constraint concrete superposed short column.
As a still further scheme of the invention: the ring rib can be made of common steel, high-performance composite materials and the like.
As a still further scheme of the invention: the 5 lap joint sections of the ring ribs are welded in a double-face lap joint mode, the lap joint length is not less than 5 times of the diameter of the 5 ring ribs, and the whole ring ribs 5 are located on the same horizontal plane.
As a still further scheme of the invention: the distance between the ring ribs along the height direction of the wall is not more than 80 mm.
As a still further scheme of the invention: the ring ribs are bound at the bottom layer of the wall stirrup at intervals.
As a still further scheme of the invention: the ring reinforcement is bound on the short vertical steel bar to form a whole.
A unequal strength wall beam joint based on a ring rib constraint concrete superposed short column is disclosed, and the construction method comprises the following steps:
binding and molding wall vertical steel bars, wall stirrups, ring bars and short vertical steel bars according to a reinforcement distribution diagram to form a reinforcement cage of the wall, wherein the first ring bar is bound on the wall stirrups, and then the short vertical steel bars are bound on the ring bars;
binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the stirrups in the node core area, the ring reinforcement and the short vertical reinforcements according to the reinforcement distribution diagram to form a beam plate and a reinforcement cage in the node core area;
pouring second strength grade concrete of the second strength grade concrete wall;
pouring concrete with a first strength grade in a node core area and a beam plate;
and step five, repeating the steps.
The invention has the beneficial effects that: 1) on the basis of the original wall beam node with unequal strength, the core area of the node is cast by adopting concrete with the same strength grade as that of a beam slab, and is internally provided with a ring rib and a short vertical steel bar to form a ring rib restrained concrete superposed short column;
2) the joint area is poured by adopting the concrete with the same first strength grade as the beam slab, so that the construction difficulty of the unequal strength concrete wall beam joint can be reduced; the interior of the node is provided with the ring rib restraining concrete overlapping 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 capacity 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.
The invention reduces the construction difficulty of the unequal strength wall beam node and ensures the anti-seismic performance of the unequal strength node.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a horizontal sectional view of the wall of FIG. 1 with reinforcing rings to restrain the concrete overlapping studs;
FIG. 3 is a vertical cross-sectional view of the wall of FIG. 1 with ring bars to restrain the concrete overlapping stubs;
FIG. 4 is a view of a ring rib in different forms;
FIG. 5 is a structural diagram of a node of an original unequal strength wall beam;
in the figure: 1. the wall vertical reinforcing steel bar 2, the wall stirrup, 3, the concrete of first intensity level, 4, the concrete of second intensity level, 5, the ring muscle, 6, short vertical reinforcing steel bar.
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 wall beam node based on a ring-reinforced concrete composite short column includes a wall vertical reinforcement 1, a wall hoop reinforcement 2, a first strength grade concrete 3, a second strength grade concrete 4, a ring reinforcement 5 and a short vertical reinforcement 6.
The ring rib 5 can be made of steel, high-strength fiber composite materials and the like.
The 5 lap joint sections of the ring ribs are welded in a double-face lap joint mode, the lap joint length is not less than 5 times of the diameter of the 5 ring ribs, and the whole ring ribs 5 are located on the same horizontal plane.
In the embodiment of the invention, the distance between the ring ribs 5 along the height of the wall is not more than 80mm, so that the bearing capacity of the unequal strength wall beam node is improved conveniently.
Example two
Referring to fig. 1 to 4, an unequal strength wall beam node based on ring rib constraint concrete overlapping short column comprises
The concrete wall forms a main body structure of the wall beam node, 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; 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.
The wall vertical steel bars 1 are vertically embedded in the concrete wall body of the wall beam node, and are provided with a plurality of steel bar cages which are bound and fixed by the wall stirrups 2 to form a wall;
the ring reinforcement constraint concrete superposed short column is internally arranged in a reinforcement cage formed by the wall vertical reinforcements 1 and the wall hoop reinforcements 2 which are longitudinally arranged, and is formed by a ring reinforcement 5 and short vertical reinforcements 6;
wherein the annular rib 5 is in a single annular rib form or a double annular rib form; the ring ribs 5 and the short vertical reinforcing steel bars 6 are arranged in the first strength grade concrete 3 at the node intersection position, distributed along the height direction of the wall and extend into the second strength grade concrete 4 of the upper wall and the lower wall, and at least two ring ribs 5 are arranged in the second strength grade concrete 4 of the upper wall and the lower wall to form a ring rib constraint concrete superposed short column.
In the embodiment of the invention, the ring rib 5 is bound on the short vertical steel bar 6 to form a whole, so that the binding efficiency is high.
EXAMPLE III
A unequal strength wall beam joint based on a ring rib constraint concrete superposed short column is disclosed, and the construction method comprises the following steps:
step one, according to a reinforcement arrangement diagram, binding and forming wall vertical reinforcements 1, wall stirrups 2, ring reinforcements 5 and short vertical reinforcements 6 to form a reinforcement cage of the wall, wherein the first ring reinforcement 5 is bound on the wall stirrups 2, and then the short vertical reinforcements 6 are bound on the ring reinforcements 5.
And step two, binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the node core area stirrups, the ring reinforcement 5 and the short vertical reinforcements 6 according to the reinforcement distribution diagram to form the beam plate and the node core area reinforcement cage.
And step three, pouring second strength grade concrete 4 of the lower wall.
And step four, pouring the 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 wall beam joint based on the ring reinforcement constraint concrete superposed short column and the construction method thereof are used, according to a reinforcement distribution diagram, the wall vertical reinforcements 1, the wall stirrups 2, the ring reinforcements 5 and the short vertical reinforcements 6 are bound and formed to form a reinforcement cage of the lower wall, then according to the reinforcement distribution diagram, the plate reinforcements, the beam longitudinal reinforcements, the beam stirrups, the stirrups of the core area of the joint, the ring reinforcements 5 and the short vertical reinforcements 6 are bound and formed to form a beam plate and the reinforcement cage of the core area of the joint, then the concrete of the second strength grade of the lower wall is poured, the concrete of the core area of the joint and the concrete of the first strength grade of the beam plate are poured, and finally the steps are repeated.
It will be evident to those skilled in the art that the invention 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 invention 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 (8)
1. Unequal strength wall beam joint based on ring rib constraint concrete superposed short column, which is characterized by comprising
The concrete wall forms a main body structure of the wall beam node, 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 wall vertical steel bars (1) are vertically embedded in the concrete wall body of the wall beam node, and are provided with a plurality of steel bar cages which are bound and fixed by the wall stirrups (2) to form a wall;
the ring reinforcement constraint concrete superposed short column is internally arranged in a reinforcement cage formed by the vertical wall reinforcements (1) and the wall hooping reinforcements (2) which are longitudinally arranged and consists of a ring reinforcement (5) and a short vertical reinforcement (6);
wherein the annular ribs (5) are in a single annular rib form or a double annular rib form; the ring ribs (5) and the short vertical reinforcing steel bars (6) are arranged in the first strength grade concrete (3) at the node intersection positions, are distributed along the height direction of the wall and extend into the second strength grade concrete (4) of the upper wall and the lower wall, and at least two ring ribs (5) are arranged in the second strength grade concrete (4) of the upper wall and the lower wall to form a ring rib constraint concrete superposed short column.
2. The unequal strength wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: 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 wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: the ring rib (5) can be made of steel, high-strength fiber composite materials and the like.
4. The unequal strength wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: the ring rib (5) lap joint section adopts double-sided lap welding, the lap joint length is not less than 5 times of the diameter of the ring rib (5), and the whole ring rib (5) is positioned in the same horizontal plane.
5. The unequal strength wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: the distance between the connected ring ribs (5) along the height direction of the wall is not more than 80 mm.
6. The unequal strength wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: the ring ribs (5) are bound at the bottom layer of the wall stirrup (2) at intervals.
7. The unequal strength wall beam node based on the ring reinforcement confined concrete overlapping short column according to claim 1, characterized in that: the ring rib (5) is bound on the short vertical steel bar (6) to form a whole.
8. The construction method of the unequal-strength wall beam joint based on the annular reinforcement constraint concrete superposed short column is characterized by comprising the following steps of:
binding and molding wall vertical reinforcements (1), wall stirrups (2), ring reinforcements (5) and short vertical reinforcements (6) according to a reinforcement distribution diagram to form a reinforcement cage of the wall, wherein the first layer of ring reinforcements (5) are bound on the wall stirrups (2), and then the short vertical reinforcements (6) are bound on the ring reinforcements (5);
binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the node core area stirrups, the ring reinforcement (5) and the short vertical reinforcements (6) according to the reinforcement distribution diagram to form a beam plate and a node core area reinforcement cage;
step three, pouring concrete (4) with a second strength grade on the lower wall;
pouring first strength grade concrete (3) of the node core area and the beam slab;
and step five, repeating the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637207.6A CN114232813A (en) | 2021-12-29 | 2021-12-29 | Unequal-strength wall beam joint based on ring rib constraint concrete superposed short column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111637207.6A CN114232813A (en) | 2021-12-29 | 2021-12-29 | Unequal-strength wall beam joint based on ring rib constraint concrete superposed short column |
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| CN114232813A true CN114232813A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111637207.6A Pending CN114232813A (en) | 2021-12-29 | 2021-12-29 | Unequal-strength wall beam joint based on ring rib constraint concrete superposed short column |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642037A (en) * | 1992-06-30 | 1994-02-15 | Toda Constr Co Ltd | Construction method of wall type rigid frame construction |
| CN1587559A (en) * | 2004-07-15 | 2005-03-02 | 北京建工一建工程建设有限公司 | Bean column node unequal strength concrete replacing structure and its construction method |
| CN107060211A (en) * | 2017-05-08 | 2017-08-18 | 姚攀峰 | A kind of reinforced concrete sandwich formula tubing string, superposed type core pipe post and its construction method |
-
2021
- 2021-12-29 CN CN202111637207.6A patent/CN114232813A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642037A (en) * | 1992-06-30 | 1994-02-15 | Toda Constr Co Ltd | Construction method of wall type rigid frame construction |
| CN1587559A (en) * | 2004-07-15 | 2005-03-02 | 北京建工一建工程建设有限公司 | Bean column node unequal strength concrete replacing structure and its construction method |
| CN107060211A (en) * | 2017-05-08 | 2017-08-18 | 姚攀峰 | A kind of reinforced concrete sandwich formula tubing string, superposed type core pipe post and its construction method |
Non-Patent Citations (1)
| Title |
|---|
| 张加宾: "梁柱节点混凝土不等强施工技术" * |
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Application publication date: 20220325 |