CN212426782U

CN212426782U - Prestressed beam string tensioning structure

Info

Publication number: CN212426782U
Application number: CN202021835336.7U
Authority: CN
Inventors: 王攀科; 张祥瑞
Original assignee: Hubei Yichang Panke Pre Stress Technology Services Co ltd
Current assignee: Hubei Yichang Panke Pre Stress Technology Services Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-01-29
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a prestressed beam string tensioning structure, including fixed plate and fly leaf, fixed plate and fly leaf structure are the same and through to wearing the screw rod connection, the fixed plate includes integrated welding and shaping and arranges first board, second board and the third board that sets up in proper order, first board, second board and third board are the rectangle structure, first board one side is provided with the U-shaped opening, second board center sets up the second hole, the third board is formed by the butt joint of two boards of symmetry setting, forms the third hole in the middle of; arc structures are arranged on one sides of the second hole and the third hole, the size and the position of each arc structure correspond to those of the arc part of the U-shaped opening, and the other sides of the arc structures are closed through holes; and the edges of the four corners of the first plate, the second plate and the third plate are provided with corresponding positioning holes. The utility model has simple structure, adopts reasonable tool fixtures, is simple and convenient to operate and has low working strength; the construction cost is reduced, and the social benefit is increased.

Description

Prestressed beam string tensioning structure

Technical Field

The utility model relates to a building field especially relates to a prestressing force beam string structure.

Background

The beam string structure is a novel mixed structure formed by combining a rigid member, a flexible inhaul cable and a support rod connected in the middle, and belongs to one of large-span space structures. In the practical application process, the stress principle of the beam string structure is that the rigid upper chord member generates reverse deflection through the prestress applied by the lower chord stay cable of the flexible member in the use process, and the deflection is reduced under the action of building load, so that the building structure presents a balanced state. At present, in the construction of large-span engineering, the prestressed beam string structure is widely applied, the stability and the reliability of a building structure are effectively improved, and the quality of the building engineering is also effectively improved. However, with the continuous change of times, the defects of the prestressed beam string structure in the engineering construction are more and more obvious, so that certain innovation and innovation are needed to be carried out on the construction technology, the construction quality of the construction engineering can be effectively improved, and the development of the construction industry in China is promoted.

The existing beam string tensioning mode generally adopts a clamp to clamp an ear plate and the upper end of an adjusting rod for tensioning, and the mode has a complex structure and is inconvenient to implement; or the steel pull rod is used for tensioning, the structure is heavy, and the labor intensity is high during tensioning. Therefore, a tensioning structure and a tensioning method which are simple in structure and convenient to operate need to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stretch-draw end stretch-draw structure of beam string, simple structure, easily installation, easy operation, low in labor strength.

The utility model provides a prestressing force beam string stretching end tension structure, including fixed plate and fly leaf, fixed plate and fly leaf structure are the same and connect through to wearing the screw rod, the fixed plate includes integrated welding shaping's and arrange the first board, second board and the third board that sets up in proper order, first board, second board and third board are the rectangle structure, first board one side is provided with the U-shaped opening, second board center sets up the second hole, the third board is formed by the butt joint of two symmetrical boards that set up, and the centre forms the third hole; arc structures are arranged on one sides of the second hole and the third hole, and the size and the position of each arc structure correspond to those of the arc part of the U-shaped opening; and the edges of the four corners of the first plate, the second plate and the third plate are provided with corresponding positioning holes.

The utility model has simple structure, adopts reasonable tool clamp, utilizes the U-shaped opening to position the tensioning tool, can realize tensioning operation by only one calibrated jack, and has simple and convenient operation and low working strength; the construction cost is reduced, and the social benefit is increased.

Drawings

Fig. 1 is a schematic cross-sectional view of a prestressed beam string structure according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a first plate of a prestressed beam string structure according to an embodiment of the present invention.

Fig. 3 is a second schematic plate structure diagram of a prestressed beam string structure according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a third plate of a prestressed beam string structure according to an embodiment of the present invention.

The reference numbers are as follows:

1. a first plate; 2. a second plate; 3. a third plate; 4. a U-shaped hole; 5. a second hole; 6. a third aperture; 7. a fixing plate; 8. A movable plate; 9. a screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 4, a prestressed beam string tensioning structure comprises a fixed plate 7 and a movable plate 8, wherein the fixed plate 7 and the movable plate 8 have the same structure and are connected through a through screw 9, the fixed plate 7 comprises a first plate 1, a second plate 2 and a third plate 3 which are integrally welded and arranged in sequence, the first plate 1, the second plate 2 and the third plate 3 are all rectangular structures, a U-shaped opening is formed in one side of the first plate 1, a second hole 5 is formed in the center of the second plate 2, the third plate 3 is formed by butt-jointing two symmetrically arranged plates, and a third hole 6 is formed in the middle of the third plate; arc-shaped structures are arranged on one sides of the second hole 5 and the third hole 6, the size and the position of each arc-shaped structure correspond to those of the arc-shaped part of the U-shaped opening, and the other sides of the arc-shaped structures are closed through holes; the four corners of the first plate 1, the second plate 2 and the third plate 3 are provided with corresponding positioning holes.

As shown in fig. 1, the fixed and

movable plates

7 and 3 each comprise at least one first plate 1 and at least one third plate 3, and at least two second plates 2 disposed between the first plate 1 and the third plate 3.

As shown in fig. 2 to 4, the first plate 1, the second plate 2, and the third plate 3 are all rectangular plates having the same size and shape.

As shown in fig. 4, a gap is formed at the butt joint of the third plate 3.

Aiming at the tension structure tensioning method of the prestressed beam string structure of the embodiment, the method comprises the following steps:

s1, determining the dimension specifications of the first plate 1, the second plate 2 and the third plate 3 according to the specification of the cable body and the structure dimension of the tension end lug plate;

s2, processing the first plate 1, the second plate 2 and the third plate 3;

s3, placing the first plate 1 on the bottom layer, the second plate 2 on the second layer and the third plate 3 on the third layer; after aligning the positioning holes, welding the first plate 1, the second plate 2 and the third plate 3 together; two parts, namely a fixed plate 7 and a movable plate 8, are welded together;

s4, hanging the fixed plate 7 on the pin of the tension end ear plate, fixing the fixed plate by using a jig, and connecting the movable plate 8 to the outer side of the fixed plate 7 by using the opposite-penetrating screw rod 9;

s5, sequentially penetrating the steel strands for stretching through the central holes of the fixed plate 7 and the movable plate 8, and fixing the steel strands outside the movable plate 8;

and S6, performing tensioning operation by using the calibrated jack.

Specifically, the jack is arranged between the fixed plate 7 and the movable plate 8, the opposite penetrating screw rod 9 is loosened, the screw rod 9 plays a guiding role, the distance between the movable plate 8 and the fixed plate 7 is increased by utilizing the jacking force of the jack, and the tensioning effect is achieved.

In this method, the welding method in step S3 is edge full welding.

In this method, in step S5, the fixing device of the steel strand is engaged with the gap of the third plate 3. Fixing device can set up as required, generally sets up to the pull ring of taking self-locking mechanism, and pull ring one end and steel strand wires rigid coupling, the other end are fixed on the check lock lever, and the check lock lever joint takes place to rotate in the clearance when can preventing the stretch-draw steel strand wires.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The prestressed beam string tensioning structure is characterized by comprising a fixed plate and a movable plate, wherein the fixed plate and the movable plate are identical in structure and are connected through a through screw, the fixed plate comprises a first plate, a second plate and a third plate which are integrally welded and sequentially arranged, the first plate, the second plate and the third plate are all rectangular in structure, a U-shaped opening is formed in one side of the first plate, a second hole is formed in the center of the second plate, the third plate is formed by butt joint of two symmetrically arranged plates, and a third hole is formed in the middle of the third plate; arc structures are arranged on one sides of the second hole and the third hole, the size and the position of each arc structure correspond to those of the arc part of the U-shaped opening, and the other sides of the arc structures are closed through holes; and the edges of the four corners of the first plate, the second plate and the third plate are provided with corresponding positioning holes.

2. The prestressed beam string structure as claimed in claim 1, wherein the fixed plate and the movable plate each comprise at least one first plate and at least one third plate, and at least two second plates disposed between the first plate and the third plate.

3. The prestressed beam string structure as claimed in claim 2, wherein the first plate, the second plate and the third plate are rectangular plates having the same size and shape.

4. The prestressed beam string structure as claimed in claim 3, wherein a gap is formed at the butt joint of the third plates.