CN200989036Y

CN200989036Y - Anchoring device

Info

Publication number: CN200989036Y
Application number: CN 200620126691
Authority: CN
Inventors: 刘征宇
Original assignee: VSL ENGINEERING Co Ltd
Current assignee: VSL ENGINEERING Co Ltd
Priority date: 2006-10-30
Filing date: 2006-10-30
Publication date: 2007-12-12
Anticipated expiration: 2016-10-30

Abstract

The utility model relates to an anchorage device with simple structure, reliable anchor and long service life for construction and bridgework which comprises a through hole on the supporting base for passing through the carbon fiber stick; a casing pipe shaped clamping piece is arranged at the end socket of the carbon fiber stick; the clamping piece is a opening shape along the axis; the external surface of the clamping piece is a tapered face body gradually diminishing from outside to inside; the tapered face body is matching with a tapered bore of an anchor ring; a nut is arranged on the external wall of the anchor ring; the inside end surface of the nut is sustained on the external end surface of the supporting base; the external surface of the clamping piece is a tapered bore combination of the tapered face body and the anchor ring; the pulling force to the supporting base is transferred from the external wall of the anchor by the nut, and then achieves the pretension anchorage; the utility model overcomes the corrosion phenomena easily appears on the initial stress steel strand.

Description

The ground tackle device

Technical field

The utility model relates to the prestressing technique field, is used for the anchor fastening devices of the prestressing force primary structure member of building and bridge engineering.

Background technology

Along with progress of science and technology, prestressing technique is constantly development and ripe also, and its application is day by day extensive.Rear tension prestress technology common in the prior art also exposes many defectives gradually, as the member heaviness, install that inconvenience, antiseptic property are poor, monitoring difficulty or the like, this all unfavorable factor has hindered the further popularization of prestressing technique, also directly influences the construction quality and the application life of application.

Common prestressing force is made up of the ground tackle+prestress wire+prestressing force metal bellows at two ends, fill slurry in the metal bellows, a) ground tackle is usually by anchor ring+anchoring part+intermediate plate+anchorage zone spiral bar, the anchoring part of common prestressed anchor and anchor ring are relatively heavier, make troubles to constructing operation, and wasted material; B) prestress wire is made by the lax steel wire of high strength, and the anti-corrosion protection of steel strand directly has influence on prestressed loss and application life, just has influence on the application life of structure structure; C) prestressing force metal bellows is used as the prestressing force pore-forming, is rolled by thin steel band to form, very easily be corroded, and very easily distortion, poor sealing in constructing operation, in some applications, metal bellows conduction can produce electrochemical corrosion to prestress wire.

Technology contents

The ground tackle device that the purpose of this utility model just provides is simple in structure, anchoring reliable and increase the service life.

For achieving the above object, the technical solution adopted in the utility model is: a kind of ground tackle device, it is characterized in that: the utility model comprises and has the through hole that passes through for carbon fiber rod on the supporting seat, the termination clamping of carbon fiber rod has canular intermediate plate, intermediate plate is the opening shape along axial length, and the external surface of intermediate plate is the conical surface body that ecto-entad diminishes gradually, and conical surface body cooperates with the taper hole of the anchor ring of tubulose, be arranged with nut on the outer wall of anchor ring, the inner side end of nut is resisted against on the end face of the supporting seat outside.

As shown from the above technical solution, the termination of carbon fiber rod with the intermediate plate clamping, the external surface of intermediate plate is that conical surface body cooperates with the taper hole of anchor ring, the outer wall of anchor ring is delivered to pulling force on the supporting seat by nut, has so just realized the purpose of pretension anchoring, because the utility model is the pretension anchoring that carbon fiber rod is carried out, so just overcome the corrosion phenomenon that prestress wire very easily occurs, prolonged the application life of device, as ground tackle, the utility model is simple in structure and reliable.

Summary of drawings

Fig. 1 is that the utility model is the structural representation of single anchor;

Fig. 2 is the A-A sectional view among Fig. 1;

Fig. 3 is the structural representation of intermediate plate;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the local enlarged diagram among Fig. 3;

Fig. 6 is the schematic cross-section of body;

Fig. 7 is that the utility model is the structural representation of group anchor.

The specific embodiment

As shown in Figure 1, the utility model comprises and has the through hole 11 that passes through for carbon fiber rod 20 on the supporting seat 10, the termination clamping of carbon fiber rod 20 has canular intermediate plate 30, intermediate plate 30 is the opening shape along axial length, the external surface of intermediate plate 30 is conical surfaces 31 that ecto-entad diminishes gradually, the conical surface 31 cooperates with the taper hole of the anchor ring 40 of tubulose, is arranged with nut 50 on the outer wall of anchor ring 40, and the inner side end of nut 50 is resisted against on supporting seat 10 outside end faces.

Shown in Fig. 3,4,5, described intermediate plate 30 by 2～4 cross sections identical and in circumference range symmetrically arranged cell cube 32 constitute, the body 60 of aluminium or copper thin-walled is set between intermediate plate 30 and the carbon fiber rod 20, be provided with ripple or screw-shaped jog 33 vertically on intermediate plate 30 and the inner hole wall that body 60 contacts, body 60 offers the slot-shaped opening 61 of seam along the pipe range direction.

Actually add man-hour, intermediate plate 30 is selected steel part for use, at first be processed into the pyramid type revolving body, be cut into two half along its tangent plane symmetry of vertically promptly crossing the axle center again, 3 half or 4 half, as Fig. 1,3, shown in 4 and 5, constitute one thus and carve the type anchoring piece--intermediate plate 30, jog 33 on the inwall of intermediate plate 30 plays the firm grip effect, jog 33 has herein played the effect that increases friction, the surface that is carbon fiber rod 20 when avoiding clamping when having increased friction is by conquassation, therefore the body 60 of aluminium or copper thin-walled is set between intermediate plate 30 and carbon fiber rod 20, separate with thin aluminum pipe body 60 between intermediate plate 30 inwalls and the carbon fiber rod 20, prevent in the anchoring process jog 33 friction conquassation and destroy carbon fiber rod 20.

As shown in Figure 1, the inner side end of described nut 50 is resisted against on the outer face of backing plate 12 of the ring-type that supporting seat 10 outside end faces are provided with, and the leading portion of anchor ring 40 is positioned at through hole 11, is provided with spiral bar 70 in the supporting seat 10, and spiral bar 70 is around in around the through hole 11.Backing plate 12 is a steel part, and to be circular hole pass through for the end and the carbon fiber rod 20 of anchor ring 40 at the middle part, and exterior contour is square, as shown in Figure 2, and when avoiding rotating nut 50, owing to the servo-actuated phenomenon appears in the effect of frictional force.

In conjunction with Fig. 1, anchor ring 40 is a steel part, add to make by the column type revolving body man-hour, in have that awl is empty to have cooperated the anchoring effect with intermediate plate 30, the screw thread that is provided with on anchor ring 40 external cylindrical surface is used for attaching nut 50.

The position, termination that described anchor ring 40, nut 50, intermediate plate 30 and carbon fiber rod 20 expose is provided with cap body 80, and cap body 80 is selected steel part for use, and is cylindric for semi-closure, plays anti-corrosion protection.Cap body 80 and backing plate 12 bolts, and make members such as nut 50, anchor ring 40 and intermediate plate 30 be in air-tight state.

Described spiral bar 70 and backing plate 12 are embedded in the supporting seat 10 of concrete formation.Described body 60 by 2～4 cross sections identical and in circumference range symmetrically arranged cell cube constitute, can guarantee the reliable clamping between body 60 and intermediate plate 30 and the carbon fiber rod 20 like this referring to the structural representation of Fig. 4 anchor ring 40.

Continuous ripple or shape of threads are arranged in the surface of described carbon fiber rod 20, are provided with like this with the continuous ripple or the helical form outer wall of the jog 33 of intermediate plate 30 to carry out good cooperating, guarantee to connect reliably.

Add man-hour, in advance spiral bar 70 and backing plate 12 are embedded in the supporting seat 10 of structural concrete formation, spiral bar 70 plays reinforced concrete structure, and backing plate 12 plays a supportive role.

Two half or the intermediate plate 30 of 3 half formulas outer carve and carve type in type and the anchor ring 40 and cooperate, and it is firm with carbon fiber rod 20 anchorings to pass through intermediate plate 30.

During assembling, thin aluminum pipe body 60 is pressed into the inwall of intermediate plate 30, assembles intermediate plate 30 and carbon fiber rod 20 then, again intermediate plate 30 is assemblied in the anchor hole of anchor ring 40, with special-purpose pre-clamping tool with the intermediate plate pretension 40 li of anchor rings, and control pretightning force size.

Nut 50 is screwed on the anchor ring 40, and nut 50 is supported on the backing plate 12, carry out stretch-draw with jack then; after reaching design stress, remove supporting facility, with the shutoff of anchoring duct, again with anchor ring; members such as nut are coated grease, install the anti-corrosion protection cap at last.What Fig. 7 provided is group anchor ground tackle, being about to many carbon fiber rods finishes in a ground tackle device, specifically be exactly to offer a plurality of taper holes on the anchor ring 40, intermediate plate 30 of corresponding matching and carbon fiber rod 20 in each taper hole can be realized the anchoring of the pretightning force occasion that high strength requires like this.All the other technology contents are identical with the single anchor situation among Fig. 1.

Claims

1, a kind of ground tackle device, it is characterized in that: the utility model comprises and having on the supporting seat (10) for the through hole (11) that passes through of carbon fiber rod (20), the termination clamping of carbon fiber rod (20) has canular intermediate plate (30), intermediate plate (30) is the opening shape along axial length, the external surface of intermediate plate (30) is the conical surface (31) that ecto-entad diminishes gradually, the conical surface (31) cooperates with the taper hole of the anchor ring (40) of tubulose, be arranged with nut (50) on the outer wall of anchor ring (40), the inner side end of nut (50) is resisted against on the end face of supporting seat (10) outside.

2, ground tackle device according to claim 1, it is characterized in that: described intermediate plate (30) by 2～4 cross sections identical and in circumference range symmetrically arranged cell cube (32) constitute, the body (60) of aluminium or copper thin-walled is set between intermediate plate (30) and the carbon fiber rod (20), be provided with ripple or screw-shaped jog (33) vertically on intermediate plate (30) and the inner hole wall that body (60) contacts, body (60) offers slot-shaped opening (61) along the pipe range direction.

3, ground tackle device according to claim 1, it is characterized in that: the inner side end of described nut (50) is resisted against on the outer face of backing plate (12) of the ring-type that supporting seat (10) outside end face is provided with, backing plate (12) middle part is passed through for the end and the carbon fiber rod (20) of circular hole for anchor ring (40), its exterior contour is square, the leading portion of anchor ring (40) is positioned at through hole (11), be provided with spiral bar (70) in the supporting seat (10), spiral bar (70) is around in through hole (11) on every side.

4, ground tackle device according to claim 1 is characterized in that: the position, termination that described anchor ring (40), nut (50), intermediate plate (30) and carbon fiber rod (20) expose is provided with cap body (80).

5, according to claim 1 or 3 described ground tackle devices, it is characterized in that: described spiral bar (70) and backing plate (12) are embedded in the supporting seat (10) of concrete formation.

6, ground tackle device according to claim 2 is characterized in that: described body (60) by 2～4 cross sections identical and in circumference range symmetrically arranged cell cube constitute.

7, ground tackle device according to claim 2 is characterized in that: continuous ripple or shape of threads are arranged in the surface of described carbon fiber rod (20).