CN114922351A - Construction method of bidirectional protective layer cushion block for column and beam steel bar - Google Patents
Construction method of bidirectional protective layer cushion block for column and beam steel bar Download PDFInfo
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- CN114922351A CN114922351A CN202210764639.1A CN202210764639A CN114922351A CN 114922351 A CN114922351 A CN 114922351A CN 202210764639 A CN202210764639 A CN 202210764639A CN 114922351 A CN114922351 A CN 114922351A
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- Prior art keywords
- column
- cushion block
- protective layer
- bidirectional
- binding
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- 239000011241 protective layer Substances 0.000 title claims abstract description 49
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 26
- 230000002787 reinforcement Effects 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 240000004282 Grewia occidentalis Species 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A construction method of a bidirectional protective layer cushion block for existing column and beam steel bars is suitable for construction of a protective layer of the existing cast-in-place concrete structure column and beam steel bars with rectangular sections. The two-way protective layer cushion block is in a right-angle herringbone shape, and is lined at the corner position of the column and beam reinforcing steel bars, so that the thickness of the protective layers in two directions perpendicular to each other of the column and beam reinforcing steel bars can be ensured.
Description
Technical Field
The invention relates to a construction method for lining the thickness of a rectangular section column and beam steel bar protective layer in the construction of a cast-in-place reinforced concrete frame and a frame shear wall structure of constructional engineering.
Background
In the construction process of the existing cast-in-place concrete frame and frame shear wall structure, a column reinforcement protective layer is generally lined by circular plastic cushion blocks buckled on column stirrups; the beam reinforcing steel bar protective layer is a cushion block liner made of materials such as mortar and stone slabs. The cushion blocks are all one-way cushion blocks, and the thickness of a protective layer on one side of the steel bar can be lined.
The concrete pouring construction of the structure mostly adopts a column, beam and plate one-step integral pouring process, and when the layer height is higher, in order to ensure the concrete pouring quality and the construction safety of the column, a step-by-step pouring mode of firstly pouring the column concrete and then pouring the beam and the plate is generally adopted. However, in any of the above modes, the beam rib binding installation mode mostly adopts a rear-mounted mode, namely the beam rib binding installation is carried out after the beam plate template installation is finished. The beam rib rear-mounted construction process can cause difficult or even impossible binding of column stirrups in a column core area. Because the column reinforcement protective layer cushion block is attached to the column stirrup, the column reinforcement protective layer cushion block in the column core area is often ignored, and the situation of integral deviation of the column reinforcement is caused frequently. And the buckling connection between the circular cushion block and the steel bar is not firm enough, the lateral disturbance resistance is poor, and the circular cushion block is easy to turn on one side and is out of work in the template installation process.
The beam rib protective layer cushion block is only arranged at the bottom of the beam rib, and the two sides of the beam rib are generally not provided with corresponding technical measures to ensure the thickness of the lateral protective layer of the beam rib.
Disclosure of Invention
In order to solve the defects and shortcomings of the technical measures for arranging the steel bar protective layers of the central column and the beam in the existing cast-in-place reinforced concrete structure construction process, the invention provides the cushion block for the two-way protective layer of the column and the beam steel bar, which can ensure the thickness of the protective layer in two directions that the section of the column and the beam steel bar are mutually vertical, has good stability, overcomes the problem that the annular plastic cushion block is easy to turn on one's side to lose efficacy, and fills the defects of the technical measures in the thickness arrangement of the steel bar protective layers of the core area of the column and the side steel bar of the beam.
The technical scheme adopted by the invention for solving the technical problems is as follows: the protective layer cushion block is made into a right-angled herringbone, the top end of the herringbone is provided with a round hole vertical to a right-angled herringbone plane, the round hole is used for penetrating and winding a binding wire for binding the cushion block, the cushion block is lined at the corner position of the column and beam steel bars, wherein the column-bar bidirectional protective layer cushion block is installed by taking a main stress bar at the corner of the column as a base point, and the beam-bar bidirectional protective layer cushion block takes the lower end corner of a beam stirrup as an installation point; the column reinforcement cushion blocks are bound and fixed by binding wires, and the beam reinforcement cushion blocks do not need to be bound; the bidirectional protective layer cushion block can be used for lining the thicknesses of the protective layers in two directions which are perpendicular to each other; therefore, the cushion blocks are matched with the right-angle shapes of the corners of the sections of the columns and the beams, and the positions of the cushion blocks are relatively stable under the bidirectional constraint action of the template, so that the problem that the unidirectional plastic cushion blocks of the column ribs are prone to side turning failure is solved.
The installation base point of the bidirectional cushion block of the column reinforcement is the column main reinforcement instead of the stirrup, so that the installation in the core area of the column does not need to consider the condition of the stirrup, and the installation position of the bidirectional cushion block is arranged on the column opening, so that the operation is easy, and the problem that the cushion block in the core area of the column is difficult to install is solved.
As for the beam rib, the right-angle herringbone bidirectional cushion block has the bidirectional supporting and cushioning effect, so that the protective layer at the bottom of the reinforcing steel bar is lined, and the lateral protective layer of the reinforcing steel bar is also lined, thereby solving the situation that the lateral protective layer of the beam rib is lack of corresponding technical measures and guarantees in the prior art.
The bidirectional protective layer cushion block has the advantages that the bidirectional protective layer cushion block has the function of a bidirectional supporting cushion, so that the thickness of protective layers on two surfaces of a steel bar is supported by one cushion block, and the installation and utilization efficiency of the cushion block is improved; the bidirectional cushion block has the characteristic of good stability, and the thickness of the protective layer of the column and beam steel bar can be effectively ensured; meanwhile, the cushion block can be conveniently applied to a column core area, the overall position of a column rib is controlled while the thickness of the column rib protective layer of the column core area is ensured, and the deviation of the overall position of the column rib caused by the absence of the cushion block of the column core area protective layer is avoided.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is an isometric view of a two-way protective layer spacer of the present invention
FIG. 2 is a diagram of an exemplary application of a spacer block of a bidirectional protective layer of a column bar
FIG. 3 is a diagram of an exemplary application of a pad block of a bidirectional protection layer of a beam rib
In the figure, 1, a bidirectional protective layer cushion block, 2, a penetrating screw hole, 3, a column main stress steel bar, 4, a column stirrup, 5, a column template, 6, a beam main stress steel bar, 7, a beam stirrup and 8, a beam template are arranged.
Detailed Description
Process flow
Column reinforcement → beam slab formwork installation → column body bidirectional protection layer cushion block installation and column formwork installation, and beam reinforcement bidirectional protection layer cushion block installation are carried out simultaneously → column mouth column reinforcement bidirectional protection layer cushion block installation → slab reinforcement → concrete placement.
Binding of column reinforcement
The column main stress steel bar is lengthened in a binding (or welding or mechanical connection) mode, and then the column stirrup is bound to the beam bottom position.
Beam and slab formwork installation
And (3) erecting a full scaffold support frame, installing a beam bottom die, installing a flat plate template, and then installing a beam side die to finish the installation of the beam template and the plate template.
Column body bidirectional protection layer cushion block installation and column mold installation
Binding the bidirectional cushion blocks on the main stressed steel bars at the corner of the column from bottom to top by binding wires according to the distance of 1m, and then installing the column template.
Beam rib binding and beam rib bidirectional protection layer cushion block installation
Binding the beam ribs on the installed template surface of the floor slab, and placing the beam ribs in the beam mold in place after binding and forming; then a crowbar is used for prying the beam rib, and the cushion blocks of the bidirectional protective layer are symmetrically arranged according to the interval of 1m or arranged at the corner part of the lower end of the beam stirrup in a quincunx manner.
Bidirectional cushion block installation of column opening and column rib
And (3) arranging the stirrups in the core area of the column, and then binding and installing the cushion blocks of the bidirectional protective layer of the column reinforcement between the main stress rib and the column mould of the four-corner column at the column opening.
Flat steel bar binding
And after the column opening column rib bidirectional protective layer cushion blocks are installed, the flat plate steel bars can be bound.
Pouring of concrete
And after the steel bar is concealed and accepted, pouring concrete according to the concrete pouring scheme determined by the construction scheme.
Claims (1)
1. The utility model provides a post, two-way protective layer cushion construction method for roof beam reinforcing bar, is applicable to the construction of cast-in-place concrete structure post, roof beam reinforcing bar protective layer that the cross-section is the rectangle, characterized by: the cushion block is in a right-angle herringbone shape, a round hole is formed in the top end of the herringbone and perpendicular to a right-angle herringbone plane, the round hole is used for penetrating and winding a binding wire for binding the cushion block, the cushion block is lined at the corner position of the column and beam steel bars, the cushion block of the column-bar bidirectional protection layer is installed by taking the main stress bar at the corner of the column as a base point, and the cushion block of the beam-bar bidirectional protection layer takes the lower corner of the beam stirrup as an installation point; the column reinforcement cushion blocks are bound and fixed by binding wires, and the beam reinforcement cushion blocks are not bound; the bidirectional protective layer cushion block can be used for lining the thicknesses of the protective layers in two directions which are perpendicular to each other; the construction method comprises the following process flows of column reinforcement binding → beam plate template installation → column body bidirectional protective layer cushion block installation and column mold installation, and simultaneously carries out the steps of beam reinforcement binding and beam reinforcement bidirectional protective layer cushion block installation → slab reinforcement binding → concrete pouring; binding the column reinforcements, lengthening the column main stressed reinforcements in a binding (or welding or mechanical connection) mode, and then binding the column stirrups to the beam bottom; the beam and plate templates are installed, full scaffold support frames are erected, a beam bottom die is installed, a flat plate template is installed, and then a beam side die is installed, so that the beam and plate templates are installed; the column body bidirectional protection layer cushion block installation and the column formwork installation are carried out, the bidirectional cushion blocks are bound on main stressed steel bars at the corner of the column from bottom to top through binding wires according to the distance of 1m, and then a column formwork is installed; the beam rib is bound and the beam rib bidirectional protective layer cushion block is installed, the beam rib is bound on the installed floor slab template surface, and the beam rib is placed in a beam mold to be in place after being bound and formed; then prying up the beam rib by using a crowbar, and symmetrically arranging the cushion blocks of the bidirectional protective layer at the lower end corner of the beam stirrup at intervals of 1m or in a quincunx manner; installing the column rib bidirectional protective layer cushion block at the column port, arranging stirrups in a column core area, and then binding and installing the column rib bidirectional protective layer cushion block between main stress ribs and a column mold of the column port four-corner column; the slab steel bars are bound, and the floor slab steel bars can be bound after the column bar bidirectional protective layer cushion blocks at the column openings are installed; and pouring the concrete, namely pouring the concrete according to the concrete pouring scheme determined by the construction scheme after the hidden acceptance of the reinforcing steel bars is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764639.1A CN114922351A (en) | 2022-07-01 | 2022-07-01 | Construction method of bidirectional protective layer cushion block for column and beam steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764639.1A CN114922351A (en) | 2022-07-01 | 2022-07-01 | Construction method of bidirectional protective layer cushion block for column and beam steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114922351A true CN114922351A (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210764639.1A Withdrawn CN114922351A (en) | 2022-07-01 | 2022-07-01 | Construction method of bidirectional protective layer cushion block for column and beam steel bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114922351A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338995A (en) * | 1997-06-07 | 1998-12-22 | Hirao Tetsuken Kk | Block type mat spacer |
| CN102296752A (en) * | 2011-06-09 | 2011-12-28 | 北京工业大学 | Galvanized welded steel wire mesh beam end structure and method for improving ductility of beam end bottom pressure zone |
| CN103225368A (en) * | 2013-03-15 | 2013-07-31 | 北京工业大学 | Steel screen restricted column plastic hinge region concrete structure and making method thereof |
| CN203626140U (en) * | 2013-12-11 | 2014-06-04 | 肖大雄 | Protective layer cushion block of pillar reinforcing steel bar |
| CN105863253A (en) * | 2016-05-25 | 2016-08-17 | 杭州江润科技有限公司 | Integral formwork-supporting type asynchronous casting stairwell wall column formwork supporting system and construction method |
| CN108729645A (en) * | 2017-04-18 | 2018-11-02 | 五冶集团上海有限公司 | Pre-fabricated one beam column core space reinforcing bar binding construction method |
| CN113073727A (en) * | 2021-03-30 | 2021-07-06 | 苏州凌云建设有限公司 | Construction method of sewage structure |
| CN214885655U (en) * | 2021-03-31 | 2021-11-26 | 贾学勤 | Positioning protection mechanism for constructional engineering beam or column and constructional engineering beam or column |
| CN216811021U (en) * | 2022-03-09 | 2022-06-24 | 中国水利水电第三工程局有限公司 | Reinforcing steel bar protective layer binding structure of square reinforced concrete beam column |
-
2022
- 2022-07-01 CN CN202210764639.1A patent/CN114922351A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10338995A (en) * | 1997-06-07 | 1998-12-22 | Hirao Tetsuken Kk | Block type mat spacer |
| CN102296752A (en) * | 2011-06-09 | 2011-12-28 | 北京工业大学 | Galvanized welded steel wire mesh beam end structure and method for improving ductility of beam end bottom pressure zone |
| CN103225368A (en) * | 2013-03-15 | 2013-07-31 | 北京工业大学 | Steel screen restricted column plastic hinge region concrete structure and making method thereof |
| CN203626140U (en) * | 2013-12-11 | 2014-06-04 | 肖大雄 | Protective layer cushion block of pillar reinforcing steel bar |
| CN105863253A (en) * | 2016-05-25 | 2016-08-17 | 杭州江润科技有限公司 | Integral formwork-supporting type asynchronous casting stairwell wall column formwork supporting system and construction method |
| CN108729645A (en) * | 2017-04-18 | 2018-11-02 | 五冶集团上海有限公司 | Pre-fabricated one beam column core space reinforcing bar binding construction method |
| CN113073727A (en) * | 2021-03-30 | 2021-07-06 | 苏州凌云建设有限公司 | Construction method of sewage structure |
| CN214885655U (en) * | 2021-03-31 | 2021-11-26 | 贾学勤 | Positioning protection mechanism for constructional engineering beam or column and constructional engineering beam or column |
| CN216811021U (en) * | 2022-03-09 | 2022-06-24 | 中国水利水电第三工程局有限公司 | Reinforcing steel bar protective layer binding structure of square reinforced concrete beam column |
Non-Patent Citations (2)
| Title |
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| 佚名: "墙柱梁板混凝土同时浇筑方案", pages 13 - 66, Retrieved from the Internet <URL:https：//www.doc88.com/p-67447079989902> * |
| 李保霞;: "钢筋工程施工要点及质量控制", 河南建材, no. 06 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20220819 |