CN2053639U

CN2053639U - Stirrup for controlling reinforcement protective layer of reinforced concrete

Info

Publication number: CN2053639U
Application number: CN 89202842
Authority: CN
Inventors: 杨镜权
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-12
Filing date: 1989-03-12
Publication date: 1990-02-28

Abstract

The utility model relates to a clamp for controlling the reinforced bar protective layer of reinforced concrete, which is the supporting cushion object of reinforced bars. When the supporting cushion object is used in the construction, the disadvantages that a cement mortar cushion block can be easily damaged in the reinforced concrete construction, the quality is difficult to ensure sometimes, the fastening of a string wire cushion block and the reinforced bar is troublesome, and the supporting cushion formed through short reinforced bar material has working time wasting and the reinforced bar material wasting and easy corrosion can be overcome. The necessary thickness of the concrete protective layer can be ensured, and the phenomenon of rib exposure can not be caused when a mold is dismounted. The clamp for controlling the reinforced bar protective layer of reinforced concrete is composed of a circular clamp provided with an opening and supporting legs connected with the circular clamp provided with an opening together. The inner side of the circular clamp is provided with axial convex ribs, arc-shaped reinforcing ribs are arranged among the ends of the supporting legs connected with the circular clamp together.

Description

Stirrup for controlling reinforcement protective layer of reinforced concrete

The clamp of control steel concrete reinforcement cover is a kind of rim thing of reinforcing bar.

For guaranteeing the necessary thickness of concrete cover in the steel concrete; prevent to tear open the phenomenon that has reinforcing bar to expose when touching; by GB GBJ10～65(revised edition) the 70th regulation; cement mortar cushion block or concrete pad should be set under reinforcing bar; or make rim to lack the steel material at the reinforcing bar underlay; or fasten with string iron wire cushion block and reinforcing bar; the reinforcing bar of erectting is also used the side that iron wire pulls to reinforcing bar the template of cushion block and is fixed; adopt this method construction; cement mortar cushion block intensity is limited, and easily crisp liquor-saturated, quality be cannot say for sure to demonstrate,prove sometimes; fasten trouble of construction with string iron wire cushion block and reinforcing bar, do the useless worker of rim with short steel material; steel scrap muscle material; easy-to-rust.

The purpose of this utility model is: a kind of design scheme of controlling the clamp of steel concrete reinforcement cover is provided; overcome in the reinforced concrete construction; the cement mortar cushion block is easily crisp liquor-saturated; sometimes quality be cannot say for sure to demonstrate,prove; fasten trouble and make the give up shortcoming of worker's steel scrap muscle material, easy-to-rust of rim with string iron wire cushion block and reinforcing bar with the bar dowel material; guarantee the necessary thickness of concrete cover to reinforcement in the steel concrete, do not occur revealing the muscle phenomenon during form removal.

Specific embodiments of the present utility model is: the clamp of control steel concrete reinforcement cover is made up of open circles annular clamp and spike two parts of fusing with it; it is characterized in that: open circles annular clamp is manufactured with resilient material; the opening span of annular clamp is scalable; there is axial protrusion muscle annular clamp inboard; and between the spike end that clamp fuses the arc reinforcing rib is arranged, clamp is made with plastic injection-moulded.

Further specify below in conjunction with drawings and Examples 1:

Fig. 1: clamp A front view,

Fig. 2: clamp A lateral view,

Fig. 3: clamp A oblique view,

Among the figure: 1; clamp is thick to be 2mm, 2; the angle α that spike 5 extension lines intersect is 60 degree, 3; the spike end is thick to be 5mm; 4; arc reinforcing rib between the spike end; the radius R of this arc is 100mm, and reinforcing rib is thick to be 2mm, 5; spike; 6; spike; 7; the high 2mm in spike 5 ends, 8; spike 6 thick 2mm, 9; spike 5 thick 2mm; 10; clamp opening span K is 6mm; 11; the wide b of annular clamp is 10mm, 12; concrete protective bed thickness H is 10mm, 13; axially protrude muscle in the clamp; 14; spike 5 tip spacing L are 18mm; 15; the wide B in spike 5 ends is 15mm, 16; arc, the radius of this arc are 5mm; arc and spike 5 are tangent; and crossing with the annular clamp, the radius r of annular clamp is 5mm, the annular clamp center of circle is 4mm to protruding muscle apart from r ' to the clamp inner shafts; 17; angle θ is 70 degree (see figure 2)s, uses plastic injection-moulded shaping.

Be the requirement of the design that adapts to reinforced concrete construction and related standards, among the embodiment 1 related parameter arranged, can change, do to change accordingly according to the requirement of the thickness H of concrete cover to thickness of concrete cover in the steel concrete.Make series of products, specifically be listed as follows:

Protective layer thickness H 10mm 15mm 25mm 35mm

B 15 20 30 40

b 10 15 18 25

K 6 10 12 14

r 5 7 10 12

r′ 4 6 8.5 10

L 18 26 40 50

R 100 40 20 25

Embodiment 2:

Fig. 4: clamp B front view.

The left side view of Fig. 5: Fig. 4.

Fig. 6: clamp B oblique view.

Among the figure: the radius r of annular clamp is 10mm; the annular clamp center of circle is 8.5mm to protruding muscle apart from r ' to the clamp inner shafts; clamp opening span K is 14mm; the wide L ' of annular clamp is 18mm; the thick 2mm of annular clamp; spike 18 is 30 degree with the extension line angle of spike 19 and spike 21 and spike 22; spike 19 is 45 degree with the angle of spike 20 and spike 20 and spike 21 extension lines; spike 18; reach spike 20 between the end of spike 19 and spike 20; an arc reinforcing rib is respectively arranged between the end of spike 21 and spike 22; the radius of arc is 18mm between spike 18 and spike 19 and spike 21 and spike 22 ends; the radius of arc is 74mm between spike 19 and spike 20 and spike 20 and spike 21 ends; the thick 5mm in spike 20 ends; high 5mm; wide L30mm(sees Fig. 5); the thick 5mm in the end of spike 18 and spike 22; high 2mm; wide L30mm; concrete cover H25mm(sees Fig. 5); spike 18 is that 20mm(sees Fig. 4 with spike 19 and spike 21 with spike 22 tip spacing B); spike 19 is 33.5mm with spike 20 and spike 20 with spike 21 tip spacings; the thickness of arc reinforcing rib is 2mm between all spikes and spike end, and the radius of arc 6 is that 5mm(sees Fig. 5).

Among the embodiment 2 related parameter arranged, the variation that can require according to the thickness H of concrete cover is done to change accordingly, makes series of products.

The clamp construction of this control armored concrete thickness of protection tier that employing the utility model provides can make deviate be far smaller than the deviate of design or related standards permission, guarantees construction quality.

Claims

1, the clamp of control steel concrete reinforcement cover is made up of open circles annular clamp and spike two parts of fusing with it; it is characterized in that: open circles annular clamp is manufactured with resilient material; the opening span of annular clamp is scalable; there is axial protrusion muscle annular clamp inboard, and clamp even and between the spike end of one has the arc reinforcing rib.

2, by the clamp of the described control steel concrete of claim 1 reinforcement cover, it is characterized in that: make with plastic injection-moulded.