CN201865249U

CN201865249U - Connection anchoring element of prestressed structure steel strand pulling

Info

Publication number: CN201865249U
Application number: CN2010206532729U
Authority: CN
Inventors: 熊水金; 张建东; 孙慧星; 梁化伟
Original assignee: China Metallurgical Group Corp
Current assignee: China Metallurgical Group Corp; China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2010-12-11
Filing date: 2010-12-11
Publication date: 2011-06-15
Anticipated expiration: 2020-12-11

Abstract

The utility model discloses a connection anchoring element of prestressed structure steel strands, which comprises a body; the body is formed by connecting an anchor disk and a hollow anchor head; the anchor disk is provided with a plurality of thread holes; the front end of the anchor head is provided with a hole through which a traction steel wire rope penetrates; and the anchor disk and the anchor head are in dismountable connection. The connection anchoring element is convenient for connecting a steel strand to the traction steel wire rope of a traction device smoothly; the traction device is easy in operation in the process of enabling the steel strand to pass through a corrugated pipe, especially the steel strand can pass through the corrugated pipe conveniently, and the steel strand can not scratch the corrugated pipe even passing through an inner bend of the corrugated pipe; the threading anchoring element can be reused, so that the construction cost is reduced; and the construction progress is quickened and the construction period of building operations is ensured.

Description

The connection anchoring piece of prestressed structure steel strand lashing

Technical field

The utility model relates to a kind of linkage of making usefulness of prestressed structure for building, especially wears the working connection anchoring piece of steel wire bundle in the prestressed structure bellows.

Background technology

Prestressed structure (as steel box girder with prestressed tendons) is widely used in building field, like buildings such as structures, is main stressed member as bridge, urban viaduct, longspan structure, special form.In work progress, it is its qualifying point that steel wire bundle is passed bellows, also is construction Difficulties certainly; Common wire rope (or draught line) with draw-gear drives the preparation method that steel wire bundle passes bellows in the prior art, mode with the determining deviation that staggers a little, the front end of the steel strand that every bundle steel strand are needed is welded together to form fusiformis, be connected on the wire rope of draw-gear, drive steel wire bundle and pass bellows; This kind mode has been wasted certain material, and the mode of employing welding, there is the thermal stress effect, the hardness of the steel wire bundle front end after the welding is higher, and the pliability and the allowing property of steel wire bundle integral body are very poor, when draw-gear drive steel wire bundle passes bellows, just have some setbacks very much during bend by the turning in the bellows, when it can't adapt to the linear variation of bellows, also easily bellows is scratched, even can't finish threading.In the prior art, also carry out lashing with strand pulling machine, there is the deficiency owing to aspects such as speed of application, the scope of application, material economy in it, and the scope of application is subjected to sizable limitation, can not adapt to the construction needs of whole prestressed structures.In the prior art, do not have a kind of linkage of suitable draw-gear, steel strand are connected smoothly on the haulage cable of draw-gear, steel wire bundle difficulty passes bellows, causes its threading operation to have some setbacks, and influences construction speed.

The utility model content

The utility model is connected steel strand the deficiency on the haulage cable of draw-gear smoothly at the linkage that does not have a kind of suitable draw-gear in the prior art, provide a kind of prestressed structure steel strand to pass the connection anchoring piece of bellows lashing.

The technical solution of the utility model is: the connection anchoring piece of prestressed structure steel strand lashing, it is characterized in that: comprise body, described body is formed by connecting by the anchor head of anchor dish, hollow, offer several through wires holes on the anchor dish, the anchor head front end offers the hole of wearing haulage cable, the detachable connection between anchor dish and the anchor head.

On the inner headed face of anchor head rear end, internal thread is set, on the periphery of anchor dish, external screw thread is set,, the anchor dish is connected on the anchor head by the cooperation of internal and external screw thread.

The connection anchoring piece of the utility model prestressed structure steel strand lashing with respect to prior art, has following characteristics:

1, conveniently steel strand are connected on the haulage cable of draw-gear smoothly, when draw-gear passed bellows with it, processing ease especially can conveniently pass bellows, even when passing through the bend of bellows inside turn, also can not scratch bellows.

2, the threading anchoring piece can be reused, and has reduced construction cost.

3, accelerate construction speed, guaranteed the duration of building operations.

Description of drawings

Fig. 1 is the utility model and steel strand, haulage cable syndeton schematic diagram;

Fig. 2 the utility model threading anchoring piece structure right view.

The specific embodiment

As shown in Figure 1, 2, the connection anchoring piece of the utility model prestressed structure steel strand lashing, comprise body 1, described body 1 is formed by connecting by the anchor head 3 of anchor dish 2, hollow, offer several threading apertures 4 on the anchor dish 2, anchor head 3 front ends offer haulage cable hole 5, the detachable connection between anchor dish 2 and the anchor head 3; Shown in the figure, the concrete syndeton of anchor dish 2 and anchor head 3 is on the inner headed face of anchor head 3 rear ends internal thread to be set, and on the periphery of anchor dish 2 external screw thread is set, and by the cooperation of internal and external screw thread, anchor dish 2 is connected on the anchor head 3.When the threading anchoring piece connects, the steel wire that at first front end on every bundle steel strand is exposed certain-length penetrates (every Kong Yigen steel wires in the through wires hole 4 on the anchor dish 2, promptly connect steel strand), this steel wire is connected with anchor dish 2, simple syndeton be the front end pier with steel wire thick, make the diameter of its front end connect (also can adopt other modes to guarantee that it is connected and fixed effect) greater than the diameter of through wires hole 4; In the haulage cable hole 5 that again haulage cable or the draught line of draw-gear is penetrated anchor head 3 front ends and connect, after starting draw-gear, the haulage cable of draw-gear (or the tool steel twisted wire etc.) move forward by anchor head 3, the anchor dish 2 that drives the threading anchoring piece, the every bundle steel strand of final drive move, and pass bellows.After passing bellows, the steel wire that every bundle steel strand front end exposes is partly cut off, steel wire bundle and anchor dish 2 are separated, the steel strand in every bundle steel strand are substantially equally long simultaneously; Threading anchoring piece of the present utility model can be reused.

The body 1 that the utility model provides roughly is cylindric, and the size that will consider its external diameter during specific design is moving in bellows.

The utility model at the prestressed member of various models, is determined the steel strand quantity in the quantity of the steel wire bundle that it should use, the every bundle steel strand at first according to production engineering specifications; Carrying out steel strand adds and man-hour the termination steel wire (about 5～10 ㎝) of every steel strand is peeled off, excised, a steel wire in the middle of only staying, promptly the front end of this root steel wire exposes certain-length (about 5～10 ㎝) than the front end of other steel wires of these root steel strand, so can reduce the length of the steel strand that are cut off after threading finishes significantly; When specifically compiling bundle, steel wire bundle carries out according to normal volume beam request, the steel wire (steel wire leaks outside) that after compiling bundle and finishing the front end of steel wire bundle traction end is exposed is fixed with the anchor slab of threading anchoring piece, and the steel wire that these bundle steel strand expose by this root front end is connected on the threading anchoring piece; Position, termination (near threading anchoring piece anchor slab place) at every bundle steel strand traction end bundlees with pricking silk, twine with the end-blocking head with adhesive tape, bellows is scratched in the front end termination that can effectively prevent other reinforcing bars when threading is operated, can guarantee simultaneously normally carrying out of threading construction, accelerate the progress of threading construction.

Claims

1. the connection anchoring piece of prestressed structure steel strand lashing, it is characterized in that: comprise body (1), described body (1) is formed by connecting by the anchor head (3) of anchor dish (2), hollow, offer several through wires holes (4) on the anchor dish (2), anchor head (3) front end offers haulage cable hole (5); The detachable connection between anchor dish (2) and the anchor head (3).

2. according to the described connection anchoring piece of claim 1, it is characterized in that: on the inner headed face of anchor head (3) rear end, internal thread is set, on the periphery of anchor dish (2), external screw thread is set,, anchor dish (2) is connected on the anchor head (3) by the cooperation of internal and external screw thread.