CN111236538A - Clamp for controlling thickness of steel bar protective layer in concrete structure and construction process - Google Patents
Clamp for controlling thickness of steel bar protective layer in concrete structure and construction process Download PDFInfo
- Publication number
- CN111236538A CN111236538A CN202010111179.3A CN202010111179A CN111236538A CN 111236538 A CN111236538 A CN 111236538A CN 202010111179 A CN202010111179 A CN 202010111179A CN 111236538 A CN111236538 A CN 111236538A
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- CN
- China
- Prior art keywords
- square pipe
- steel
- steel plate
- steel bar
- galvanized square
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- 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
- E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
-
- 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
- E04C5/18—Spacers of metal or substantially of metal
Abstract
The invention discloses a fixture for controlling the thickness of a steel bar protective layer in a concrete structure, which comprises a galvanized square pipe, wherein steel plates with the same structure are fixed on two sides of the galvanized square pipe, one end of each steel plate is welded with the galvanized square pipe, and a plurality of steel bar clamping grooves are formed in the other end of each steel plate; the processing method of the fixture comprises the steps of cutting a steel plate into long strips according to the required size, and cutting a steel bar clamping groove on one side of the steel plate; cutting the galvanized square pipe into small sections matched with the steel plate; according to the installation sequence, a steel plate with a cut steel bar clamping groove is placed on the lower layer of the processing platform, a cut galvanized square pipe is placed above the steel plate, another steel plate with a cut steel bar clamping groove is placed above the galvanized square pipe, and the steel plate is welded with the contact position of the galvanized square pipe. The invention has the advantages of simple structure, convenient processing, easily obtained materials and low cost. Rely on the cooperation of zinc-plated side pipe and steel sheet, effectively play the effect of control reinforcing bar protective layer thickness, make reinforcing bar protective layer thickness detect the qualification rate and reach more than 95%, satisfy design and standard requirement.
Description
Technical Field
The invention relates to a fixture for controlling the thickness of a steel bar protective layer in a concrete structure and a construction process, belonging to the field of building construction.
Background
The thickness of a steel bar protection layer in an underground engineering concrete structure relates to the durability of a structural member and the effective anchoring property of a stressed steel bar, and the thickness control qualification rate of the steel bar protection layer is low due to the influence of factors such as construction environment, the technical level of operating personnel, the quality control consciousness of management personnel and the like in construction.
In the construction, the distance between the steel bars, the row spacing and the thickness of the protective layer are integrated, the mutual restriction and the supplement of the three are realized, the simultaneous control is needed, the three aspects of 'positioning, fixing and tightness checking' are needed to be realized to ensure the qualified thickness of the protective layer, and no better control measure is provided temporarily in the construction at present.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the fixture for controlling the thickness of the steel bar protection layer in the concrete structure, so that the qualification rate of the thickness of the steel bar protection layer is effectively improved.
The invention also provides a construction process for controlling the thickness of the steel bar protective layer in the concrete structure.
In order to achieve the purpose, the fixture for controlling the thickness of the steel bar protective layer in the concrete structure comprises a galvanized square pipe, steel plates with the same structure are fixed on two sides of the galvanized square pipe, one end of each steel plate is welded with the galvanized square pipe, and a plurality of steel bar clamping grooves are formed in the other end of each steel plate;
the machining method of the fixture comprises the following steps:
firstly, cutting a steel plate into long strips according to the required size, simultaneously cutting a steel bar clamping groove on one side of the steel plate, and placing the steel bar clamping groove in a dry place for later use after cutting;
cutting the galvanized square pipe into small sections matched with the steel plate for later use;
according to the installation sequence, a steel plate with a cut steel bar clamping groove is placed on the lower layer of the processing platform, a cut galvanized square pipe is placed above the steel plate, another steel plate with a cut steel bar clamping groove is placed above the galvanized square pipe, and the steel plate is welded with the contact position of the galvanized square pipe.
As an improvement, a through long welding line is arranged between the galvanized square pipe and the steel plate.
As an improvement, the galvanized square pipe is a square pipe with the thickness of 30mm multiplied by 30mm, steel plates with the width of 55mm and the thickness of 3mm are adhered and welded on two sides of the galvanized square pipe, and the length of the galvanized square pipe is the same as that of the steel plates.
As an improvement, the steel plate comprises a connecting end and an extending end, the length and the width of the connecting end are respectively the same as those of the galvanized square pipe, and the extending end is provided with the steel bar clamping groove.
As an improvement, the steel bar clamping groove is arc-shaped, the radius of the arc is 13mm, and the chord height is 8 mm; the steel bar clamping grooves are arranged on the steel plate at equal intervals, and the intervals are 150 mm.
In addition, the invention also provides a construction process for controlling the thickness of the steel bar protection layer in the concrete structure, which comprises the following steps: and arranging a protective layer fixture on the upper edge of the template at the lateral construction position, and then arranging a grade cushion block with the strength not lower than that of the main structure concrete.
As an improvement, the template of the lateral construction part is a short side wall template or a side wall template;
the protective layer fixture is installed above the formwork, the vertical main reinforcements are correspondingly placed in the reinforcing steel bar clamping grooves, and the protective layer fixture, the vertical main reinforcements and the steel formwork are fixed through binding wires.
Compared with the prior art, the fixture is formed by processing the galvanized square pipe and the steel plates arranged on two sides of the galvanized square pipe, one side of each steel plate is welded on the galvanized square pipe, and the other side of each steel plate is provided with the plurality of steel bar clamping grooves.
Drawings
FIG. 1 is a schematic view of the structure of the fixture of the present invention;
FIG. 2 is a schematic structural view of a steel plate in the jig of the present invention;
FIG. 3 is a cross-sectional view of the clamp of the present invention;
FIG. 4 is a top view of the fixture of the present invention installed;
FIG. 5 is a sectional view of the fixture of the present invention in its installed position;
in the figure: 1. galvanized side pipe, 2, steel sheet, 21, link, 22, stretch out the end, 23, reinforcing bar draw-in groove, 3, lead to long welding seam, 4, drag hook reinforcing bar, 5, vertical main muscle, 6, the horizontal muscle of side wall, 7, protective layer fixture, 8, side wall template.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, 2 and 3, a fixture for controlling the thickness of a steel bar protection layer in a concrete structure comprises a galvanized square pipe 1, steel plates 2 with the same structure are fixed on two sides of the galvanized square pipe 1, one end of each steel plate 2 is welded with the galvanized square pipe 1, and a plurality of steel bar clamping grooves 23 are formed in the other end of each steel plate 2;
the machining method of the fixture comprises the following steps:
firstly, cutting the steel plate 2 into long strips according to the required size, simultaneously cutting a steel bar clamping groove 23 on one side of the steel plate 2, and placing the cut steel bar clamping groove in a dry place for later use;
cutting the galvanized square pipe 1 into small sections matched with the steel plate 2 for later use;
according to the installation sequence, a steel plate 2 with a cut steel bar clamping groove 23 is placed on the lower layer of the processing platform, a cut galvanized square pipe 1 is placed above the steel plate 2, another steel plate 2 with a cut steel bar clamping groove 23 is placed above the galvanized square pipe 1, and the steel plate 2 and the galvanized square pipe 1 are welded at the contact position.
As an improvement of the embodiment, a through long welding seam 3 is arranged between the galvanized square pipe 1 and the steel plate 2.
In addition, the invention also provides a construction process for controlling the thickness of the steel bar protection layer in the concrete structure, which comprises the following steps: and arranging the protective layer fixture 7 on the upper edge of the formwork at the lateral construction position, and then arranging a grade cushion block with the strength not lower than that of the main structure concrete.
As an improvement of the embodiment, the formwork of the lateral construction part is a short side wall formwork or a side wall formwork 8;
the protective layer fixture 7 is firstly installed above the formwork, the vertical main reinforcement 5 is correspondingly placed in the reinforcement clamping groove 23, and the protective layer fixture 7, the vertical main reinforcement 5 and the steel formwork are fixed through binding wires.
Example 1
Taking the main structure side wall as an example, the thickness of the outermost layer of the steel bar protection layer designed on the inner side of the side wall is 35 mm. The specific construction process is as follows:
first, manufacture of fixture
1) The main raw materials comprise:
adopting a galvanized square pipe 1 with the thickness of 30mm multiplied by 30mm and a steel plate 2 with the thickness of 3mm, welding full-length steel plates with the width of 55mm and the thickness of 3mm on the upper side and the lower side of the galvanized steel pipe 1 in a sticking way, wherein the connecting end 21 on one side of each steel plate is flush with the galvanized square pipe 1, and the extending end 22 on the other side of each steel plate exceeds the galvanized square pipe by 25 mm;
and cutting steel bar clamping grooves 23 on the extension end 22 of the steel plate, which exceeds the galvanized square pipe, wherein the distance between the steel bar clamping grooves 23 is 150mm, the steel bar clamping grooves 23 are arc-shaped, the arc radius is 13mm, the chord height is 8mm, the thickness of the protective layer of the vertical main bar 5 is 47mm, and the thickness of the protective layer of the outermost steel bar (the drag hook steel bar 4) is 35 mm. The length of each protective layer fixture 7 is 1.5m, and the width of each protective layer fixture is the same as that of each protective layer fixture, so that the protective layer fixtures are convenient to install in a matched mode.
2) A plasma cutting machine is adopted to cut the steel plate 2 into long strips with the length multiplied by the width of 1500mm multiplied by 55mm, arc-shaped steel bar clamping grooves with the interval of 150mm, the radius of 13mm and the chord height of 8mm are cut on one side (namely the extending end 22), and the steel bar clamping grooves are placed in a dry place after being cut, so that the semi-finished product is prevented from being corroded. Then, the galvanized square pipe 1 with the length of 30mm multiplied by 30mm is cut into small sections with the length of 1.5m for standby.
3) The processed steel plate 2 is placed on the processing platform, according to the installation sequence, the steel plate 2 with the cut steel bar clamping grooves 23 is placed on the lower layer, the cut galvanized square pipe 1 is placed above the steel plate 2, one side (namely the connecting end 21) without the steel bar clamping grooves 23 in the galvanized square pipe 1 and the steel plate 2 is aligned, and the position where the galvanized square pipe 1 is in contact with the steel plate 2 is fully welded.
4) Then another steel plate 2 is placed above the galvanized square pipe 1, one side (namely the connecting end 21) without the steel bar clamping groove 23 in the steel plate 2 is aligned with the galvanized square pipe 1, and the contact position of the galvanized square pipe 1 and the steel plate 2 is fully welded, so that the protective layer clamp 7 is processed.
Secondly, mounting of the clamping apparatus
The protective layer fixture 7 is mainly arranged on the inner sides of structural members such as the upper edge of a bottom plate short side wall template and the upper edge of a side wall template 8, and meanwhile, concrete grade cushion blocks with strength not lower than that of a main structure are arranged between reinforcing steel bars and the template according to the specification and design requirements.
As shown in fig. 4 and 5, the installation position of the fixture is the uppermost part of the template, the vertical main reinforcements of the side wall are correspondingly arranged in the reinforcement clamping grooves 23, the fixture is fixed with the vertical main reinforcements 5 and the steel template by adopting the binding wires, the binding wires are bound firmly, the fixture is prevented from falling off or shifting due to the vibration effect during the process of reinforcing the template and pouring concrete, and then the drag hook reinforcements 4 and the horizontal reinforcements 6 of the side wall are installed.
By adopting the construction process, the control measure effect is better from the use conditions of a 2 # line first-stage engineering new-yuan road station, a city government station and a 3 # line first-stage engineering science and technology wide-field station of the Xuzhou city urban rail transit, the detection qualification rate of the thickness of the steel bar protection layer reaches more than 95 percent through the detection of the construction completion structural section, the design and specification requirements are met, and the construction process has good application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The fixture for controlling the thickness of the steel bar protective layer in the concrete structure is characterized by comprising a galvanized square pipe (1), steel plates (2) with the same structure are fixed on two sides of the galvanized square pipe (1), one end of each steel plate (2) is welded with the galvanized square pipe (1), and a plurality of steel bar clamping grooves (23) are formed in the other end of each steel plate;
the machining method of the fixture comprises the following steps:
firstly, cutting a steel plate (2) into long strips according to a required size, simultaneously cutting a steel bar clamping groove (23) on one side of the steel plate (2), and placing the steel bar clamping groove in a dry place for later use after cutting;
cutting the galvanized square pipe (1) into small sections matched with the steel plate (2) for later use;
according to the installation sequence, a steel plate (2) with a cut steel bar clamping groove (23) is placed on the lower layer of the processing platform, a cut galvanized square pipe (1) is placed above the steel plate (2) with the cut steel bar clamping groove (23) is placed above the galvanized square pipe (1), and the steel plate (2) and the galvanized square pipe (1) are welded at the contact position.
2. The fixture for controlling the thickness of a steel bar protective layer in a concrete structure according to claim 1, wherein a through-length welding seam (3) is arranged between the galvanized square pipe (1) and the steel plate (2).
3. The fixture for controlling the thickness of a steel bar protective layer in a concrete structure according to claim 1, wherein the galvanized square pipe (1) is a 30mm x 30mm square pipe, steel plates (2) with the width of 55mm and the thickness of 3mm are welded on both sides of the galvanized square pipe (1), and the length of the galvanized square pipe (1) is the same as that of the steel plates (2).
4. The jig for controlling the thickness of a steel bar protective layer in a concrete structure according to claim 3, wherein the steel plate (2) comprises a connection end (21) and an extension end (22), the connection end (21) has the same length and width as the galvanized square pipe (1), respectively, and the extension end (22) is provided with the steel bar clamping groove (23).
5. The fixture for controlling the thickness of the protective layer of steel bars in a concrete structure according to claim 1 or 4, characterized in that the steel bar clamping groove (23) is arc-shaped, the radius of the arc is 13mm, and the chord height is 8 mm; the steel bar clamping grooves (23) are arranged on the steel plate (2) at equal intervals, and the intervals are 150 mm.
6. A construction process for controlling the thickness of a steel bar protection layer in a concrete structure is characterized by comprising the following steps: and arranging a protective layer fixture (7) on the upper edge of the formwork at the lateral construction position, and then arranging a grade cushion block with the strength not lower than that of the main structure concrete.
7. The construction process for controlling the thickness of the steel bar protection layer in the concrete structure according to claim 6, wherein the formwork of the lateral construction part is a short side wall formwork or a side wall formwork (8);
the protective layer fixture (7) is installed above the formwork, the vertical main ribs (5) are correspondingly placed in the steel bar clamping grooves (23), and the protective layer fixture (7), the vertical main ribs (5) and the steel formwork are fixed through binding wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010111179.3A CN111236538A (en) | 2020-02-24 | 2020-02-24 | Clamp for controlling thickness of steel bar protective layer in concrete structure and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010111179.3A CN111236538A (en) | 2020-02-24 | 2020-02-24 | Clamp for controlling thickness of steel bar protective layer in concrete structure and construction process |
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| Publication Number | Publication Date |
|---|---|
| CN111236538A true CN111236538A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010111179.3A Pending CN111236538A (en) | 2020-02-24 | 2020-02-24 | Clamp for controlling thickness of steel bar protective layer in concrete structure and construction process |
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| Country | Link |
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| CN (1) | CN111236538A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953781A (en) * | 2021-11-30 | 2022-01-21 | 泰山石膏有限公司 | Protective layer cushion block and production process and equipment thereof |
| CN116163474A (en) * | 2022-12-09 | 2023-05-26 | 中国二十冶集团有限公司 | Construction site structural beam steel bar bracket and application method thereof |
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| CN201050139Y (en) * | 2007-06-06 | 2008-04-23 | 广州大学 | Rectangular steel pipe column steel frame beam column joint |
| KR20090105609A (en) * | 2008-04-03 | 2009-10-07 | 최영완 | One-Touch Type an Iron Rod Connection Coupler for Iron Rod Concrete Construction |
| JP2010101136A (en) * | 2008-10-27 | 2010-05-06 | D B S:Kk | Anchoring reinforcement |
| CN204590640U (en) * | 2015-03-15 | 2015-08-26 | 邯郸市曙光新型建材科技有限公司 | A kind of prefabricated concrete structure longitudinal reinforcement location adjustment jig |
| CN206539032U (en) * | 2017-02-15 | 2017-10-03 | 中国建筑第八工程局有限公司 | Bar spacing register control and its system |
| CN207228643U (en) * | 2017-07-07 | 2018-04-13 | 中铁十二局集团有限公司 | A kind of new cover to reinforcement fixture |
| CN209975876U (en) * | 2019-04-25 | 2020-01-21 | 中铁十二局集团第二工程有限公司 | Steel bar layer and interval combined controller |
| CN211817435U (en) * | 2020-02-24 | 2020-10-30 | 徐州市城市轨道交通有限责任公司 | Subway station side wall reinforced concrete protective layer thickness control fixture |
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2020
- 2020-02-24 CN CN202010111179.3A patent/CN111236538A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201050139Y (en) * | 2007-06-06 | 2008-04-23 | 广州大学 | Rectangular steel pipe column steel frame beam column joint |
| KR20090105609A (en) * | 2008-04-03 | 2009-10-07 | 최영완 | One-Touch Type an Iron Rod Connection Coupler for Iron Rod Concrete Construction |
| JP2010101136A (en) * | 2008-10-27 | 2010-05-06 | D B S:Kk | Anchoring reinforcement |
| CN204590640U (en) * | 2015-03-15 | 2015-08-26 | 邯郸市曙光新型建材科技有限公司 | A kind of prefabricated concrete structure longitudinal reinforcement location adjustment jig |
| CN206539032U (en) * | 2017-02-15 | 2017-10-03 | 中国建筑第八工程局有限公司 | Bar spacing register control and its system |
| CN207228643U (en) * | 2017-07-07 | 2018-04-13 | 中铁十二局集团有限公司 | A kind of new cover to reinforcement fixture |
| CN209975876U (en) * | 2019-04-25 | 2020-01-21 | 中铁十二局集团第二工程有限公司 | Steel bar layer and interval combined controller |
| CN211817435U (en) * | 2020-02-24 | 2020-10-30 | 徐州市城市轨道交通有限责任公司 | Subway station side wall reinforced concrete protective layer thickness control fixture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953781A (en) * | 2021-11-30 | 2022-01-21 | 泰山石膏有限公司 | Protective layer cushion block and production process and equipment thereof |
| CN116163474A (en) * | 2022-12-09 | 2023-05-26 | 中国二十冶集团有限公司 | Construction site structural beam steel bar bracket and application method thereof |
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Application publication date: 20200605 |