CN202081581U

CN202081581U - Circumferential prestressed steel strand self-locking anchor device

Info

Publication number: CN202081581U
Application number: CN2011201782313U
Authority: CN
Inventors: 周长东; 厉春龙; 朱万旭; 杨帆
Original assignee: Beijing Jiaotong University
Current assignee: Beijing Jiaotong University
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2011-12-21
Anticipated expiration: 2021-05-30

Abstract

The utility model discloses a circumferential prestressed steel strand self-locking anchor device and relates to the self-locking anchor device which is used for reinforcing a silo, a water tower, a cooling tower, a chimney, a gas storage tank, a liquid storage tank and the like having circular structures or a pressed circular pier, a column and other large-diameter circular concrete members, and belongs to the field of structural strengthening of constructional engineering, bridge engineering and other civil engineering. The self-locking anchor device comprises an anchor head (1), a steel strand (2), a first clamping piece (3) and a second clamping piece (4). The anchor head has the effects of fixing and locking the steel strand, a first pore canal (5) and a second pore canal (6) are longitudinally arranged in the anchor head, the first pore canal (5) and the second pore canal (6) are connected with the steel strand into a whole through the clamping pieces. All sections of the anchor head are rectangular, and the first pore canal is parallel to the second pore canal. The anchor device is simple in structure and reasonable in stress, and can fast and conveniently reinforce and strength the existing structure.

Description

A kind of ring orientation prestress steel strand self-locking anchor device

Technical field

The utility model relates to a kind of self-locking anchor device, can be used for reinforcing circular configurations such as silo, water tower, cooling tower, chimney, gasholder and fluid reservoir, or large-diameter circular concrete components such as pressurized circular pier, cylinder, belong to civil engineering structure field of reinforcement such as construction work, bridge engineering.

Background technology

The category of circular configuration or member comprises such as silo, TV transmission tower, water tower, cooling tower, chimney, gasholder, fluid reservoir and pressurized circular pier, cylinder with large diameter etc.Have thin wall circular shape cross section such as silo etc. under the internal pressure effect, comprising on any radial section of annulus axis, outer wall all is subjected to big pulling force; Filled circles section structural members such as circular pier are under the axial compression effect, and there is the big trend that evenly rises in the cross section.Therefore concrete loose, slump may appear in circular configuration or member outer wall, reinforcing bar exposes, even makes some circular configuration with reserve function or member the seepage phenomenon occur, and this has caused great potential safety hazard to circular configuration or member.Especially for the very big circular configuration in cross section,, remarkable to the development function effect that suppresses diagonal crack and longitudinal crack if can apply effective hoop restraint forces to original structure.

For circular configuration such as silo or member reinforcement means commonly used enlarged cross section reinforcing method, encased steel reinforcing method, method etc. are arranged.But traditional reinforcement means often has long, multiple deficiency such as cost is higher, applicable surface is limited of construction period.

Prestress wire is the stranded steel cable that is made of many high-tensile steel wires, and the steel strand of stabilized processing.Steel strand have that intensity height, elastic limit height, good extending performance, stress relaxation are low, characteristics, especially tensile strength such as not loose are high and relaxation property is good after cutting off, and steel strand are become apply prestressed ideal material in the reinforcement and strengthening.

Reliable in the market ripe ring orientation prestress ground tackle device yet there are no.

The utility model content

Technical problem to be solved in the utility model is that a kind of ring orientation prestress steel strand self-locking anchor device is provided.

To achieve these goals, the utility model has been taked following technical scheme:

A kind of ring orientation prestress steel strand self-locking anchor device, this self-locking anchor device comprises, anchor head, steel strand, first intermediate plate, second intermediate plate.Anchor head plays effect fixing and the locking steel strand, connects as one by intermediate plate and steel strand.

Longitudinally be provided with first duct and second duct in the described anchor head, first duct is parallel with second duct; The left port in first duct is a bellmouth, and the right output port in second duct is a bellmouth.

One end right-to-left of described steel strand passes the bellmouth of first duct and left port thereof, with the first intermediate plate jam-pack; The other end of steel strand passes the bellmouth of second duct and right output port thereof from left to right, after the stretch-draw steel strand are finished, with the second intermediate plate jam-pack.

The beneficial effect that the utlity model has:

The utlity model has simple structure, construction advantage such as convenient, and can effectively apply the hoop restraint forces for the heavy in section circular configuration, remarkable to the development function effect that suppresses diagonal crack and longitudinal crack.This anchor device is installed in after the reinforced structure surface, because after locking produces prestressing force to steel strand tension, utilize the characteristics of the high-strength underrelaxation of steel strand, anchor device produces toroidal confinement power to reinforced structure, produce the effect of similar stirrup, can carry out reinforcement and strengthening to existing structure quickly and easily.By a plurality of ground tackles are installed in same structure, can increase many ring orientation prestress steel strand, in actual engineering, have higher utility.

Description of drawings

Fig. 1 is the schematic perspective view of ring orientation prestress steel strand self-locking anchor device;

Fig. 2 is the schematic perspective view of anchor head;

Fig. 3 is the sectional drawing of anchor head;

Fig. 4 is the left view of anchor head;

Fig. 5 is the right view of anchor head;

Fig. 6 is the schematic diagram of intermediate plate;

Among the figure: anchor head 1, steel strand 2, the first intermediate plates 3, the second intermediate plates 4,5, the second ducts 6, first duct.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

A kind of ring orientation prestress steel strand self-locking anchor device, as shown in Figure 1, this self-locking anchor device comprises, anchor head 1, steel strand 2, first intermediate plate 3, second intermediate plate 4.

Described anchor head 1 is as Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, longitudinally is provided with first duct 5 in the anchor head and 6, the first ducts, second duct are parallel with second duct; The left port in first duct 5 is a bellmouth, and the right output port in second duct 6 is a bellmouth.

One end right-to-left of described steel strand 2 passes the bellmouth of first duct 5 and left port thereof, with first intermediate plate, 3 jam-packs; The other end of steel strand 2 passes the bellmouth of second duct 6 and right output port thereof from left to right, with second intermediate plate, 4 jam-packs.

Each cross section of described anchor head 1 is rectangle.

Described first intermediate plate 3, second intermediate plate, 4 structures are identical, are the patent No.: 200620100296.5 " pre-stress anchor clipper ".

Anchor head 1 is selected steel or alloy material for use.

Anchor head plays effect fixing and the locking steel strand, connects as one by intermediate plate and steel strand, as shown in Figure 2.

A kind of reinforcement means of ring orientation prestress steel strand self-locking anchor device:

One end right-to-left of steel strand 2 is passed second duct 5 of anchor head and the bellmouth of left port thereof, with first intermediate plate, 3 jam-packs.Anchor head placed treat the strenthening member surface, and enclose the cover steel strand, the other end of described steel strand 2 is passed the bellmouth of second duct 6 and right output port thereof from left to right, after the stretch-draw steel strand are finished, with second intermediate plate, 4 jam-packs in treating strenthening member one week of surface; Block unnecessary steel strand.Ground tackle self-locking construction is finished.

Claims

1. ring orientation prestress steel strand self-locking anchor device is characterized in that:

This self-locking anchor device comprises, anchor head (1), steel strand (2), first intermediate plate (3), second intermediate plate (4);

Longitudinally be provided with first duct (5) and second duct (6) in the described anchor head (1), first duct (5) are parallel with second duct (6); The left port in first duct (5) is a bellmouth, and the right output port of second duct (6) is a bellmouth;

One end right-to-left of described steel strand (2) passes the bellmouth of first duct (5) and left port thereof, with first intermediate plate (3) jam-pack; The other end of steel strand (2) passes the bellmouth of second duct (6) and right output port thereof from left to right, after the stretch-draw steel strand are finished, with second intermediate plate (4) jam-pack.