CN114232812A - Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column - Google Patents
Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column Download PDFInfo
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- CN114232812A CN114232812A CN202111635439.8A CN202111635439A CN114232812A CN 114232812 A CN114232812 A CN 114232812A CN 202111635439 A CN202111635439 A CN 202111635439A CN 114232812 A CN114232812 A CN 114232812A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 95
- 239000010959 steel Substances 0.000 title claims abstract description 95
- 239000004567 concrete Substances 0.000 title claims abstract description 91
- 238000010276 construction Methods 0.000 claims abstract description 6
- 210000003205 muscle Anatomy 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims description 46
- 238000010586 diagram Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 3
- 230000000452 restraining effect Effects 0.000 description 5
- 238000009435 building construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 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
-
- 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
-
- 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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides an unequal-strength wall beam node based on a steel plate hoop constrained concrete superposed short column, which comprises wall vertical reinforcing steel bars, wall hooping, concrete with a first strength grade, concrete with a second strength grade, steel plate hoops and short vertical reinforcing steel bars. The node core area adopts the same first intensity grade concrete placement with the beam slab to establish steel sheet hoop restraint concrete coincide short column in, steel sheet hoop restraint concrete coincide short column is equipped with the steel sheet muscle and short vertical muscle. The unequal-strength wall beam node based on the steel plate hoop restrained concrete superposed short column has the advantages of high construction efficiency, small construction difficulty and good anti-seismic performance.
Description
Technical Field
The invention relates to a unequal strength concrete wall beam node, in particular to an unequal strength concrete wall beam node based on a steel plate hoop restraining concrete superposed short column.
Background
For the existing building construction engineering, in order to increase the use space, the concrete strength of the wall serving as a vertical stress member is generally relatively high, and the beam slab is large in area, adopts high-strength concrete and is easy to generate shrinkage cracks to influence the quality, and the concrete strength is relatively low. In the building construction engineering, the specification requires that partition measures are taken in unequal strength concrete junction areas, the construction method is not ideal, the slump of commercial concrete is high, if a template is not arranged at an interface and the commercial concrete naturally flows, the commercial concrete can flow outwards for a long distance, and the higher-strength concrete poured and tamped at a node can be longer, so that a construction joint which is not easy to process is formed at a beam end, and the concrete at the node can not reach the expected strength due to insufficient tamping.
Disclosure of Invention
The invention aims to solve the problems and provide an unequal strength wall beam node for restraining a concrete overlapping short column based on a steel plate hoop.
The invention realizes the purpose through the following technical scheme: unequal strength wall beam node based on steel plate hoop constrained concrete superposed short column, which comprises
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 steel plate hoop constrained concrete superposed short column is internally arranged in a reinforcement cage formed by the wall vertical reinforcements and the wall hoops which are longitudinally arranged and consists of the steel plate hoop and the short vertical reinforcements;
the steel plate hoops are in a single steel plate hoop or double steel plate hoops formed by welding steel plates;
the steel plate hoops and the short vertical ribs are arranged in the first strength grade concrete at the node intersection positions, distributed along the height direction of the wall and extend into the upper wall and the lower wall, and at least two steel plate hoops are arranged in the second strength grade concrete of the upper wall and the lower wall to form a steel plate hoop restraining concrete overlapping short column.
The design strength of the second strength grade concrete is higher than that of the first strength grade concrete by more than two grades.
As a still further scheme of the invention: the net spacing in the axial direction of the plate hoop is less than 80 mm.
As a still further scheme of the invention: the steel plate hoops are bound on the short vertical ribs to form a whole.
A unequal strength wall beam node based on a steel plate hoop constrained concrete superposed short column is constructed by the following steps:
binding and molding wall vertical steel bars, wall stirrups, steel plate hoops and short vertical bars according to a reinforcement distribution diagram to form a reinforcement cage of a wall, wherein the first steel plate hoop is bound on the wall stirrups, and then the short vertical bars are bound on the steel plate hoops;
step two, binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the stirrups in the node core area, the steel plate hoops and the short vertical reinforcements according to a reinforcement distribution diagram to form a beam plate and a reinforcement cage in the node core area;
step three, pouring second strength grade concrete of the lower 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) the core area of the node is poured by using lower concrete which is the same as the beam slab, so that the construction difficulty of the unequal strength concrete beam column node can be reduced; 2) the steel plate hoops are arranged in the nodes to restrain the concrete superposed short columns, 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 nodes 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 horizontal sectional view of FIG. 1 with steel plate hoops restraining concrete overlapping short columns;
FIG. 3 is a vertical cross-sectional view of the concrete overlapping short column of FIG. 1 with a steel plate hoop;
FIG. 4 is a drawing of a steel plate hoop of the present invention in a different form;
FIG. 5 is a structural diagram of a node of an original wall beam with unequal strength;
in the figure: 1. the wall vertical reinforcing steel bar, 2, wall stirrup, 3, first intensity grade concrete, 4, second intensity grade concrete, 5, steel plate hoop, 6, short vertical muscle.
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 steel plate hoop constrained concrete superposed short column includes a wall vertical reinforcement 1, a wall hoop 2, a first strength grade concrete 3, a second strength grade concrete 4, a steel plate hoop 5 and a short vertical reinforcement 6. 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 present invention, the steel plate hoop 5 may be a single steel plate hoop or a double steel plate hoop formed by welding steel plates.
In the embodiment of the invention, the steel plate hoops 5 and the short vertical ribs 6 are arranged in the first strength grade concrete 3 at the node intersection part, are distributed along the height direction of the wall and extend into the upper wall and the lower wall, and at least two steel plate hoops 5 are arranged in the second strength grade concrete of the upper wall and the lower wall to form the concrete overlapping short column restrained based on the steel plate hoops.
In the embodiment of the invention, the clearance distance of the steel plate hoop 5 in the axial direction of the wall is less than 80mm, so that the bearing capacity of the reinforced concrete wall beam node is improved conveniently.
Example two
Referring to fig. 1 to 4, an unequal strength wall beam node based on a steel plate hoop constrained 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;
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 steel plate hoop constrained concrete superposed short column is internally arranged in a reinforcement cage formed by the vertical wall reinforcements 1 and the wall hoops 2 which are longitudinally arranged, and consists of a steel plate hoop 5 and a short vertical reinforcement 6;
the steel plate hoops 5 are single steel plate hoops or double steel plate hoops formed by welding steel plates;
in placing node cross section's first intensity level concrete 3 in steel sheet hoop 5 and short vertical muscle 6 in, along wall direction of height distribution and stretch into upper and lower wall, and all set up two steel sheet hoops 5 in the upper and lower wall second intensity level concrete at least, form steel sheet hoop restraint concrete coincide short column.
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.
As a further scheme of the invention: the steel plate hoop 5 is bound on the short vertical rib 6 to form a whole, and the binding efficiency is high.
EXAMPLE III
A unequal strength wall beam node based on a steel plate hoop constrained concrete superposed short column is constructed by the following steps:
step one, according to a reinforcement arrangement diagram, binding and forming wall vertical reinforcements 1, wall stirrups 2, steel plate hoops 5 and short vertical reinforcements 6 to form a reinforcement cage of the wall, wherein the first steel plate hoop 5 is bound on the wall stirrups 2, and then the short vertical reinforcements 6 are bound on the steel plate hoops 5.
And step two, binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the stirrup in the node core area, the steel plate hoops 5 and the short vertical reinforcements 6 according to the reinforcement distribution diagram to form the beam plate and the reinforcement cage in the node core area.
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 steel plate hoop restraining concrete superposed short column is used, according to a reinforcement allocation diagram, the wall vertical steel bars 1, the wall hoop steel bars 2, the steel plate hoops 5 and the short vertical steel bars 6 are bound and formed to form a steel reinforcement cage of the wall, wherein the first steel plate hoop 5 is bound on the wall hoop steel bars 2, and then the short vertical steel bars 6 are bound on the steel plate hoops 5; binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrup, the node core area stirrup, the steel plate hoop 5 and the short vertical reinforcement 6 according to a reinforcement distribution diagram to form a beam plate and a node core area reinforcement cage; pouring second strength grade concrete 4 of the lower wall; 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 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 (5)
1. Unequal strength wall beam joint based on steel plate hoop constrained 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 steel plate hoop constrained concrete superposed short column is internally arranged in a reinforcement cage formed by the vertical wall reinforcements (1) and the wall hoops (2) which are longitudinally arranged, and consists of a steel plate hoop (5) and a short vertical reinforcement (6);
the steel plate hoops (5) are in a single steel plate hoop or double steel plate hoops formed by welding steel plates;
in placing node cross section's first intensity level concrete (3) in steel sheet hoop (5) and short vertical muscle (6), along wall direction of height distribution and stretch into wall from top to bottom, and all set up two steel sheet hoops (5) in the wall second intensity level concrete from top to bottom at least, form steel sheet hoop restraint concrete coincide short column.
2. The unequal strength wall beam node based on steel plate hoop confined concrete overlapping short column of 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 steel plate hoop confined concrete overlapping short column of claim 1, characterized in that: the net spacing of the steel plate hoops (5) along the axial direction of the wall is less than 80 mm.
4. The unequal strength wall beam node based on steel plate hoop confined concrete overlapping short column of claim 1, characterized in that: the steel plate hoop (5) is bound on the short vertical rib (6) to form a whole.
5. The construction method of the unequal strength wall beam joint based on the steel plate hoop restrained concrete superposed short column of claim 1 is characterized by comprising the following steps:
binding and molding wall vertical reinforcements (1), wall stirrups (2), steel plate hoops (5) and short vertical reinforcements (6) according to a reinforcement distribution diagram to form a reinforcement cage of a wall, wherein the first steel plate hoop (5) is bound on the wall stirrups (2), and then the short vertical reinforcements (6) are bound on the steel plate hoops (5);
binding and molding the plate reinforcement, the beam longitudinal reinforcement, the beam stirrups, the stirrup in the node core area, the steel plate hoops (5) and the short vertical 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 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 |
|---|---|---|---|
| CN202111635439.8A CN114232812A (en) | 2021-12-29 | 2021-12-29 | Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111635439.8A CN114232812A (en) | 2021-12-29 | 2021-12-29 | Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column |
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| CN114232812A true CN114232812A (en) | 2022-03-25 |
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| CN202111635439.8A Pending CN114232812A (en) | 2021-12-29 | 2021-12-29 | Unequal strength wall beam joint based on steel plate hoop constrained concrete superposed short column |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008180008A (en) * | 2007-01-25 | 2008-08-07 | Toda Constr Co Ltd | Column and beam joint structure and construction method thereof |
| CN104695555A (en) * | 2013-12-06 | 2015-06-10 | 中建四局第五建筑工程有限公司 | Construction process for joint of large-section beam column of different concrete strength grades |
| CN105951988A (en) * | 2016-07-20 | 2016-09-21 | 河北科工建筑工程集团有限公司 | Different-strength-grade concrete structure of beam-column joint and construction technology of concrete structure |
| 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 |
| CN107299724A (en) * | 2017-06-28 | 2017-10-27 | 华南理工大学 | A kind of overlapping stirrup and method for improving frame column ductility |
| CN109680835A (en) * | 2019-02-15 | 2019-04-26 | 姚攀峰 | A kind of self-bearing type precast concrete wall panel, concrete walls, structural system and engineering method |
| US20200040564A1 (en) * | 2016-10-17 | 2020-02-06 | South China University Of Technology | Reinforced compound concrete beam-column joint containing demolished concrete lumps and a construction method |
| CN212656384U (en) * | 2020-05-29 | 2021-03-05 | 三一筑工科技有限公司 | High-strength concrete connecting piece, high-strength concrete post-cast assembled frame system and support frame |
-
2021
- 2021-12-29 CN CN202111635439.8A patent/CN114232812A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008180008A (en) * | 2007-01-25 | 2008-08-07 | Toda Constr Co Ltd | Column and beam joint structure and construction method thereof |
| CN104695555A (en) * | 2013-12-06 | 2015-06-10 | 中建四局第五建筑工程有限公司 | Construction process for joint of large-section beam column of different concrete strength grades |
| CN105951988A (en) * | 2016-07-20 | 2016-09-21 | 河北科工建筑工程集团有限公司 | Different-strength-grade concrete structure of beam-column joint and construction technology of concrete structure |
| US20200040564A1 (en) * | 2016-10-17 | 2020-02-06 | South China University Of Technology | Reinforced compound concrete beam-column joint containing demolished concrete lumps and a 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 |
| CN107299724A (en) * | 2017-06-28 | 2017-10-27 | 华南理工大学 | A kind of overlapping stirrup and method for improving frame column ductility |
| CN109680835A (en) * | 2019-02-15 | 2019-04-26 | 姚攀峰 | A kind of self-bearing type precast concrete wall panel, concrete walls, structural system and engineering method |
| CN212656384U (en) * | 2020-05-29 | 2021-03-05 | 三一筑工科技有限公司 | High-strength concrete connecting piece, high-strength concrete post-cast assembled frame system and support frame |
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| Title |
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| 张加宾著: "《梁柱节点混凝土不等强施工技术》", 《铁道建筑技术》 * |
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