CN2435451Y

CN2435451Y - Large-diameter steel strand ground tackle

Info

Publication number: CN2435451Y
Application number: CN 00237460
Authority: CN
Inventors: 苏强; 谢正元; 李文献; 招礼亮
Original assignee: LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL
Current assignee: LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL
Priority date: 2000-07-11
Filing date: 2000-07-11
Publication date: 2001-06-20
Anticipated expiration: 2010-07-11

Abstract

The utility model relates to a large-diameter steel strand anchoring device, which comprises a clamping piece 1, an anchor plate 2, and an anchor shim plate 3, wherein, the clamping piece forms a round table shape with an alpha pitch, the anchor plate is provided with an inner hole with a beta pitch, and the pitch of the clamping piece 1 is 6 DEG 40'. The difference of the alpha pitch of the clamping piece and the beta pitch of inner hole of the anchor plate is 010'. For a steel strand with the diameter phi 22 mm or 23 mm, the outer diameter D of the big end of the clamping piece is 4045 mm or is from 58 to 61 mm, and the screw thread bottom diameter d is 2122 mm or is 2829 mm. The overall length L of the clamping piece is 6070 mm or is 95105 mm. The utility model can reliably and fixedly anchor the large diameter steel strand with the diameter phi 22 mm and phi 28 mm, the clamp force of the anchoring device to the steel strand is big, and the anchoring efficiency is high.

Description

The major diameter steel strand anchorage

The utility model relates to a kind of building operations prestress wire anchoring ground tackle.

The intermediate plate of existing prestress wire anchoring ground tackle is generally the truncated cone-shaped of band gradient, two four open types, have screw thread on itself and the steel strand contact surface, have the endoporus of band gradient on the anchor slab, because intermediate plate gradient and anchor hole internal taper hole gradient, the intermediate plate outside dimension, length cooperates unreasonable, cause the anchoring property of ground tackle desirable not enough, particularly existing ground tackle can only the anchoring diameter be φ 12.7, φ 12.9, φ 15.2, φ 15.7, the prestress wire of φ 17.8mm, can't be φ 22mm with diameter, the supporting clamping of the steel strand of φ 28mm, and along with the continuous development of prestressing technique, thick diameter, high strength, the steel strand of big specification will become the developing direction of prestress wire, and the coming years, interior diameter was φ 22, the steel strand of φ 28mm will be widely used.

The purpose of this utility model is to provide a kind of and can be reliably the big diameter steel twisted wire of φ 22mm, φ 28mm be carried out anchoring, ground tackle to the steel strand chucking power is big, anchoring efficient is high major diameter steel strand anchorage.

For reaching above-mentioned purpose, the big diameter steel strand anchorage of the utility model, comprise intermediate plate, anchor slab, anchor plate, described intermediate plate is the truncated cone-shaped of band gradient α, have screw thread on two four open types, itself and steel strand contact surface, the endoporus of band gradient β is arranged on the anchor slab, the gradient α of described intermediate plate be 6 °～6 ° 40 ', the difference of the gradient α of intermediate plate and anchor slab endoporus gradient β is within 0～10 ' scope.

Being used for the anchoring diameter is the big diameter steel strand anchorage of steel strand of φ 22mm, the big end outer diameter D=40～45mm of described intermediate plate, core diameter of thread d=21～22mm, intermediate plate length overall L=60～70mm.

Being used for the anchoring diameter is the big diameter steel strand anchorage of steel strand of φ 28mm, the big end outer diameter D=58～61mm of described intermediate plate, core diameter of thread d=28～29mm, intermediate plate length overall L=95～105mm.

The big diameter steel strand anchorage of the utility model is compared with the ground tackle of existing clamping minor diameter steel strand: increase and adjusted the appearance and size of ground tackle, thereby increased the intensity of intermediate plate and the number of teeth of effective engagement prestress wire; The gradient of intermediate plate and anchor slab endoporus reduces, and has increased the chucking power of intermediate plate to steel strand, prevents the relative slippage of each root steel wire in the steel strand, makes each root steel wire stressed more even, has improved anchoring property.

Below, the architectural feature to the big diameter steel strand anchorage of the utility model is described further in conjunction with the accompanying drawings and embodiments:

Fig. 1: the utility model big diameter steel strand anchorage structural representation and user mode reference diagram;

Fig. 2: the clamping piece structure schematic diagram of major diameter steel strand anchorage;

Fig. 3: the anchor slab structural representation of major diameter steel strand anchorage.

Embodiment:

A kind of major diameter steel strand anchorage, as shown in Figure 1, 2, 3, this ground tackle comprises intermediate plate 1, anchor slab 2, anchor plate 3, described intermediate plate 1 is the truncated cone-shaped of band gradient α, have screw thread on two four open types, itself and steel strand contact surface, the endoporus of band gradient β is arranged on the anchor slab, the gradient α of intermediate plate 1 be 6 °～6 ° 40 ', the difference of the gradient α of intermediate plate 1 and anchor slab 2 endoporus gradient β is within 0～10 ' scope.

Being used for the anchoring diameter is the big diameter steel strand anchorage of steel strand of φ 22mm, the big end outer diameter D of described intermediate plate=40～45mm, core diameter of thread d=21～22mm, intermediate plate length overall L=60～70mm.

Among Fig. 1,4 is auxiliary reinforcement, and 5 is the major diameter steel strand.

Claims

1, a kind of major diameter steel strand anchorage, comprise intermediate plate (1), anchor slab (2), anchor plate (3), described intermediate plate (1) is the truncated cone-shaped of band gradient α, two four open types, have screw thread on itself and the steel strand contact surface, the endoporus that band gradient β is arranged on the anchor slab (2), the difference of the gradient α of described intermediate plate (1) and anchor slab (2) endoporus gradient β be 0～10 ', it is characterized in that: the gradient α of described intermediate plate (1) be 6 °～6 ° 40 '.

2, major diameter steel strand anchorage as claimed in claim 1 is characterized in that: big end external diameter (D)=40～45mm of described intermediate plate (1), the core diameter of thread (d)=21～22mm, intermediate plate length overall (L)=60～70mm.

3, major diameter steel strand anchorage as claimed in claim 1 is characterized in that: big end external diameter (D)=58～61mm of described intermediate plate (1), the core diameter of thread (d)=28～29mm, intermediate plate length overall (L)=95～105mm.