Prestressed steel wire rope tensioning system and method

[0028] The present invention will be further explained below in conjunction with the drawings.

[0029] Such as Figure 1 to Figure 5 The shown prestressed steel wire rope tensioning system includes a planting bar 2 arranged on the structure to be reinforced 13; the anchor plate 1 is fixed to the structure to be reinforced 13 through the planting bar 2; the steel wire 3 is bypassing the opening of the threaded sleeve 4 Then, use the squeeze anchor head 5 for anchoring; one end of the main threaded rod 6 is connected with the threaded sleeve 4 through internal threads, and the other end passes through the opening of the anchor plate 1, and then is fixed with the anchor nut 11; the tension bracket 7 rests on the anchor On both sides of the plate 2, the secondary threaded rod 14 passes through the opening of the tension bracket 7 and is connected to the main threaded rod 6 through the connecting sleeve 8; the force sensor 9, the washer 10 and the tension nut 12 are installed on the secondary threaded rod in sequence 14 on. The extrusion anchor head 5 is made of soft material with holes inside. After the wire rope 3 passes through the extrusion anchor head 5, the extrusion anchor head 5 is squeezed with a tool to achieve the purpose of anchoring the wire rope 3, and the other end of the wire rope 3 Anchor on other parts of the structure to be reinforced or anchored on other structures. One end of the threaded sleeve 4 is provided with a longitudinal internal threaded hole, and the other end is provided with a horizontal unthreaded hole. The longitudinal internal threaded hole is used for connecting with the threaded rod 6 and the horizontal unthreaded hole is used for connecting the wire rope 3. The tension nut 12 can be tightened with a tool to apply prestress to the wire rope 3, and the tension force of the wire rope 3 can be controlled by controlling the torsion of the tool.

[0030] The present invention also provides a method for tensioning the prestressed steel wire rope, which includes the following steps:

[0031] (1) Drill holes at the corresponding position of the structure 13 to be reinforced, and install the planting bar 2;

[0032] (2) Fix the anchor plate 1 to the structure to be reinforced 13 through the planting bar 2;

[0033] (3) The wire rope 3 is anchored with the extrusion anchor 5 after passing through the transverse unthreaded hole of the threaded sleeve 4;

[0034] (4) After passing the main threaded rod 6 through the opening of the anchor plate 1, screw it into the internal thread of the threaded sleeve 5, and the other end of the main threaded rod 6 is fixed with the anchor nut 11;

[0035] (5) Push the tension support 7 against one side of the anchor plate 1, and the secondary threaded rod 6 is connected to the main threaded rod 6 through the connecting sleeve 8 after passing through the opening of the tension support 7;

[0036] (6) Install the force sensor 9, the washer 10 and the tension nut 12 on the auxiliary threaded rod 14 in sequence;

[0037] (7) Tighten the tension nut 12 with a tool, and apply prestress to the wire rope 3 until the reading of the force sensor 9 reaches the design tension;

[0038] (8) Tighten the anchor nut 11 to complete the tension of the wire rope;

[0039] (9) Repeat steps 3 to 8 in sequence to complete the installation and tensioning of all wire ropes;

[0040] (10) Finally, the tension nut 12, the washer 10, the force sensor 9, the connecting sleeve 8 and the tension bracket 7 are removed.

[0041] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.