CN201661014U - Thickness-limiting supporting rack for concrete protective layer of floor slab hogging moment reinforcing steel bar - Google Patents
Thickness-limiting supporting rack for concrete protective layer of floor slab hogging moment reinforcing steel bar Download PDFInfo
- Publication number
- CN201661014U CN201661014U CN2010201643320U CN201020164332U CN201661014U CN 201661014 U CN201661014 U CN 201661014U CN 2010201643320 U CN2010201643320 U CN 2010201643320U CN 201020164332 U CN201020164332 U CN 201020164332U CN 201661014 U CN201661014 U CN 201661014U
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- floor slab
- thread steel
- thickness
- screw
- protective layer
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- Expired - Fee Related
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model provides a thickness-limiting supporting rack for a concrete protective layer of a floor slab hogging moment reinforcing steel bar, which belongs to a floor slab construction tool and is characterized in that: thread steel I with Phi 14mm is adopted as a ridge, inverted V-shaped foot supports are uniformly distributed in the length direction of the ridge in a welding manner, and the space between every two adjacent foot supports is 150mm; the upper ends of two segments of thread steel II with Phi 12mm are welded presenting an acute angle so as to form each foot support, the acute angle end of each foot support is respectively welded with the circumferential bottom surface of the ridge into a whole, and the acute angle of each foot support can be 60 DEG. When in use, the thickness-limiting supporting rack not only can strictly control the concrete protective layer of the cast-in-place floor slab hogging moment reinforcing steel bar, but also can be repeatedly used so as not to cause material wastes and affect the safety performance of the original structure, thereby improving the floor slab in-place-casting quality and saving the cost.
Description
Technical field
The utility model belongs to the floor slab construction instrument, especially relates to a kind of construction tool of floorslab concrete topping.
Background technology
Increasingly stringent along with quality control in the construction of commercial housing work progress; existing reinforcement cover control measure are only thicker to protective layer thickness; the concrete beam and plate effect that the arrangement of reinforcement specification is bigger is obvious; and for this class thickness of slab of cast-in-situ floor of common commercial residential buildings such as frame construction about 100mm; the arrangement of reinforcement specification is less; negative reinforcement is generally φ 6.5mm or φ 8mm; existing reinforcement cover control effect is very undesirable; the cast-in-situ floor surfacing steel bar topping support member of Gou Maiing on the market; volume is little; poor stability; in work progress especially concreting process, very easily trampled overturning by the workman; and at formwork erection; in the process of reinforcing bar binding; all kinds of constructions and inspection personnel trample repeatedly; often finish in concreting; cause hidden danger of quality after floor bar is hidden; the deviation that makes cast-in-situ floor concrete cover to reinforcement thickness generally all is 5～8mm, and index all can not reach the requirement of national regulation regulation.
Summary of the invention
The purpose of this utility model provides a kind of concrete cover of floor negative reinforcement and limits thick bracing frame; concrete cover that can strict control cast-in-situ floor negative reinforcement; can reuse again simultaneously; do not cause waste of material and do not influence the original structure security performance, improve the cast-in-place quality of floor, save cost.
The purpose of this utility model is achieved like this: a kind of concrete cover of floor negative reinforcement is limit thick bracing frame; it is characterized in that: with screw-thread steel I is spine; this screw-thread steel I can be φ 14mm; pin at the uniform inverted V-shaped that is welded of the length direction of this spine supports; the spacing that each adjacent in twos pin supports can be 150mm; this pin supports upper end by two sections screw-thread steel II and is mutually acute angle and is welded; this screw-thread steel II can be φ 12mm; the acute ends that each pin supports all is welded into one with the circumference bottom surface of spine, and the acute angle of this pin support can be 60 °.
In actual the use, screw-thread steel I is that the length of spine is consistent with the cast-in-situ floor width, when the acute angle of pin support is 60 °, and L=(h-Φ by formula
1)/Sin60 ° is calculated the length that pin supports screw-thread steel II, and wherein h is the thickness of slab of floor, Φ
1For spine is the diameter of screw-thread steel I, for example floor is thick is 100mm, and spine is the diameter of phi of screw-thread steel I
1Be 14mm, then the length of every screw-thread steel II is (110-14)/Sin60 °=110mm; Typical floor floor platform template lay finish and floor at the bottom of after reinforcing bar binding finishes, colligation plate face negative reinforcement will be welded into whole bracing frame then and be placed on the platform template, and use iron wire, can be 22
#Iron wire gets up the spine of the Φ 14mm screw-thread steel of bracing frame and the negative reinforcement distribution bar colligation of plate face, and the spine of guaranteeing Φ 14mm screw-thread steel is positioned on the plate face negative reinforcement, before floorslab concrete is built, the workman is told somebody what one's real intentions are, the levelling of plate surface concrete is in strict accordance with the upper edge of the spine of Φ 14mm screw-thread steel, just cover this root spine with concrete and be as the criterion, remove 22 after the levelling
#Tie wire; extract whole bracing frame out; the receipts light of wiping one's face is followed in bricklayer; finish this procedure; like this after the floorslab concrete moulding; the concrete cover of negative reinforcement will just in time be controlled within 14.5mm～15.5mm scope, meet the GB standards of acceptance, guarantee the quality of this work items effectively.
The concrete cover of the floor negative reinforcement that the utility model proposes is limit thick bracing frame; simple in structure; easy to use; concrete cover that can strict control cast-in-situ floor negative reinforcement; can reuse again simultaneously; do not cause waste of material and do not influence the original structure security performance, improve the cast-in-place quality of floor, save cost.
Now limit thick bracing frame to be further described to the concrete cover of the floor negative reinforcement that the utility model proposed in conjunction with the accompanying drawings and embodiments.
Description of drawings
Fig. 1 is the main cross-sectional schematic of the concrete cover of the floor negative reinforcement that proposes of the utility model when limitting thick bracing frame to use.
Fig. 2 is the schematic perspective view of the concrete cover of the floor negative reinforcement that proposes of the utility model when limitting thick bracing frame to use.
Among Fig. 1, Fig. 2: 1, reinforcing bar 3, spine 4, pin support 5, iron wire at the bottom of negative reinforcement 2, the floor
The specific embodiment
From Fig. 1, Fig. 2 as can be seen: a kind of concrete cover of floor negative reinforcement is limit thick bracing frame, it is characterized in that:
With screw-thread steel I is spine 3, this screw-thread steel I can be φ 14mm, pin at the uniform inverted V-shaped that is welded of the length direction of this spine 3 supports 4, the spacing of each adjacent in twos pin support 4 can be 150mm, these pin support 4 upper ends by two sections screw-thread steel II are mutually acute angle and are welded, this screw-thread steel II can be φ 12mm, and each pin supports 4 acute ends and all is welded into one with the circumference bottom surface of spine 3, and the acute angle of this pin support 4 can be 60 °.
In actual the use, screw-thread steel I is that the length of spine 3 is consistent with the cast-in-situ floor width, when the acute angle of pin support is 60 °, and L=(h-Φ by formula
1)/Sin60 ° of the length of calculating the screw-thread steel II of pin support 4, wherein h is the thickness of slab of floor, Φ
1For spine 3 is the diameter of screw-thread steel I, for example floor is thick is 100mm, the diameter of phi of spine 3
1Be 14mm, then the length of every screw-thread steel II is (110-14)/Sin60 °=110mm; Typical floor floor platform template lay finish and floor at the bottom of after reinforcing bar 2 colligations finish, colligation plate face negative reinforcement 1 will be welded into whole bracing frame then and be placed on the platform template, and with iron wire 5, can be 22
#Iron wire gets up the spine 3 of the Φ 14mm screw-thread steel of bracing frame with the negative reinforcement distribution bar colligation of plate face, and the spine 3 of guaranteeing Φ 14mm screw-thread steel is positioned on the plate face negative reinforcement 1, before floorslab concrete is built, the workman is told somebody what one's real intentions are, the levelling of plate surface concrete is in strict accordance with the upper edge of the spine 3 of Φ 14mm screw-thread steel, just cover this root spine 3 with concrete and be as the criterion, remove 22 after the levelling
#Tie wire; extract whole bracing frame out; the receipts light of wiping one's face is followed in bricklayer; finish this procedure; like this after the floorslab concrete moulding; the concrete cover of negative reinforcement 1 will just in time be controlled within 14.5mm～15.5mm scope, meet the GB standards of acceptance, guarantee the quality of this work items effectively.
Claims (2)
1. the concrete cover of a floor negative reinforcement is limit thick bracing frame; it is characterized in that: with screw-thread steel I is spine (3); pin at the uniform inverted V-shaped that is welded of length direction of this spine (3) supports (4); this pin supports (4) and is mutually acute angle by the upper end of two sections screw-thread steel II and is welded, and the acute ends that each pin supports (4) all is welded into one with the circumference bottom surface of spine (3).
2. the concrete cover of floor negative reinforcement according to claim 1 is limit thick bracing frame; the acute angle that it is characterized in that described pin support (4) is 60 °; screw-thread steel I is φ 14mm, and screw-thread steel II is φ 12mm, and the spacing that each adjacent in twos pin supports (4) is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201643320U CN201661014U (en) | 2010-04-20 | 2010-04-20 | Thickness-limiting supporting rack for concrete protective layer of floor slab hogging moment reinforcing steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201643320U CN201661014U (en) | 2010-04-20 | 2010-04-20 | Thickness-limiting supporting rack for concrete protective layer of floor slab hogging moment reinforcing steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661014U true CN201661014U (en) | 2010-12-01 |
Family
ID=43231431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201643320U Expired - Fee Related CN201661014U (en) | 2010-04-20 | 2010-04-20 | Thickness-limiting supporting rack for concrete protective layer of floor slab hogging moment reinforcing steel bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661014U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291001A (en) * | 2013-06-04 | 2013-09-11 | 中建四局第三建筑工程有限公司 | Method for controlling thickness of protection layer on surface of floor slab reinforcing mesh and mould used in method |
| CN106088607A (en) * | 2016-08-16 | 2016-11-09 | 中国建筑第七工程局有限公司 | A kind of cast-in-situ floor is multi-functional, can turnaround operation platform and construction thereof |
-
2010
- 2010-04-20 CN CN2010201643320U patent/CN201661014U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291001A (en) * | 2013-06-04 | 2013-09-11 | 中建四局第三建筑工程有限公司 | Method for controlling thickness of protection layer on surface of floor slab reinforcing mesh and mould used in method |
| CN103291001B (en) * | 2013-06-04 | 2016-08-10 | 中建四局第三建筑工程有限公司 | Control method and the mould therefor of floor reinforced bar mesh surface protection layer thickness |
| CN106088607A (en) * | 2016-08-16 | 2016-11-09 | 中国建筑第七工程局有限公司 | A kind of cast-in-situ floor is multi-functional, can turnaround operation platform and construction thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20160420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |