• Post Tensioning System

  • Post Tensioning System

  • Post Tensioning System

  • Post Tensioning System

Post Tensioning System

Prestressing force is the compressive stress applied to a structure in advance during construction in order to improve the service performance of the structure.

Product Description

Prestressing force is the compressive stress applied to a structure in advance during construction in order to improve the service performance of the structure. Pre-added compressive stress during the service period of the structure can fully or partially offset the tensile stress caused by the load, avoiding the destruction of the structure, and is commonly used in concrete structures.

 

The Concept of Prestressing Force

1. Prestressing force is the stress applied to the member before loading;

2. Prestressing force makes full use of the compressive strength and tensile strength of the material, and can improve the crack resistance of concrete, but will not improve the load carrying capacity of the member;

4. The inverted arch of the member caused by prestressing can offset the deflection of the constant load, but it has almost no effect on the deformation caused by variable loads;

5. prestressing is an internal force in the member, which does not destabilize the member, but rather improves the stability of the member. For example, prestressing can be applied to precast piles to improve the stability of the piles during transportation and pile driving;

 

Post Tensioning System

 

Components of Post Tensioning System

A prestressing system usually consists of several components, including anchor, wedge, strand, and bellows.

 

Post Tensioning System Post Tensioning System
Post Tensioning System Post Tensioning System

 

Post Stressing Anchor

Prestressing anchors are mainly used to maintain the tension in the prestressing tendons and transfer it to the concrete, and have significant advantages in the application of post-tensioned structures or members.

The fixture and connector in the pre-stressing anchorage system are pre-stressing anchorage devices derived from different applications, the anchoring principle is exactly the same, and the under-anchor support system has a clear and simpler structure.

 

Our company produces prestressing anchorage as follows:

 

Post Tensioning System Post Tensioning System Post Tensioning System Post Tensioning System Post Tensioning System
RYM15 RYM15 RYM15 15.2x42.4 RYM18  RYM22

 

Dia of
PC Strand
Wedge type Dimensions No. of
Segments(PCS)
Weight Quantity(Sets)
per pack
Material Hardness
(HRC)
D(mm) L(mm)
3.9mm RYM4 16.0  27.0  2 25g 500 20CrMnTi 58-62
12.7mm RYM13 23.7  35.8  2&3 62g 200
15.2mm RYM15 25.5  42.4  2&3 82g 150
17.8mm RYM18 30.0  47.0  2&3 120g 75
21.6mm RYM22 36.4  59.0  2&3 200g 75

 

Post Tensioning Wedge

Prestressing strand tensioning anchorage wedge is also called prestressing wedge.

1. After the installation of anchorage is completed, it is followed by the installation of wedge. The wedge is located at the rear of the anchorage and is threaded on top of the single strand. Clip is a steel structure, its shape is conical hollow structure. It is composed of two pieces, which is convenient for on-site installation.

 2. The clamp is smooth in appearance and has teeth marks on the inner wall, which restricts the displacement of the strand under stress and increases the friction.

 

Post Tensioning System Post Tensioning System Post Tensioning System Post Tensioning System Post Tensioning System
3.9mm anchor and wedge S3 anchor barrel S5 anchorage set Single hole cast iron anchor 132x60mm Square anchor + column anchor side

 

Prestressed Anchor Bolt

The main function of prestressed anchor bolt is to anchor one end in the hard rock layer by drilling a hole through the weak rock layer or sliding surface, and then the tensioning operation can be carried out at the other free end, so as to achieve the effect of exerting pressure on the rock layer and anchoring the unstable rock body.

 

Our company provides regular products of pre-stressing fixture and pre-stressing anchorage, and we can also customize special size products according to your needs.

 

RuiYi Product Catalog-Wedge&Anchors
Wedge Type Product Code Dimensions
(D mm*L mm)

No. of Segments

(PCS)

Material&Hardness

Weight

(g)

Qty(Sets) /Box

Compatible PC Strand(Dia)

Post Tensioning System RYM04 16*27 2 Material: 20CrMnTi
Hardness: HRC 58-62
25 500 3.9mm
RYM013 23.7*35.8 2&3 62 200 12.7mm
RYM015 25.5*42.4 2&3 82 150 15.2mm
RYM018 30*47 2&3 120 75 17.8mm
RYM022 36.4*59 2&3 200 75 21.6mm
Anchor Type Product Code

Grout hole size

(mm)

Flat duct hole size(mm) Compatible Anchor Head Weight(KG) QTY(PCS)/Box

Compatible PC Strand(Dia)

Post Tensioning System RY153 17.0  78x20 2 holes*12.7mm
3 holes*12.7mm
2 500 12.7mm
Post Tensioning System RY197 17.0  50*23 2 holes*12.7mm
3 holes*12.7mm
2 500 12.7mm
Post Tensioning System RY210 21.0  78*22 3 holes*12.7mm
4 holes*12.7mm
5 holes*12.7mm
3 holes*15.2mm
4 holes*15.2mm 
3.4 250 12.7&15.2mm
Post Tensioning System RY269 21.0  96*22
4 holes*15.2mm
5 holes*15.2mm 
3.4 250 15.2mm
Post Tensioning System RY203 20.0  82*23
4 holes*15.2mm
3.8 250 15.2mm
Anchor head type Product code

Dimensions

(L*W*H)

Compatible Anchor  Compatible Wedge 

Weight

(KG)

QTY(PCS)/Box

Compatible PC Strand(Dia)

Post Tensioning System 2 holes*12.7mm 100*50*50 RY153/RY197 RYM013(12.7mm) 1.3 500 12.7mm
3 holes*12.7mm 128*50*50 RY153/RY197/RY210 RYM013(12.7mm) 1.6 500 12.7mm
4 holes*12.7mm 169*50*50 RY210 RYM013(12.7mm) 2.1 500 12.7mm
5 holes*12.7mm 205*50*50 RY210 RYM013(12.7mm) 2.6 500 12.7mm
3 holes*15.2mm 136*53*51 RY210 RYM015(15.2mm) 1.86 500 15.2mm
4 holes*15.2mm 183*53*51 RY210/RY269/RY203 RYM015(15.2mm) 2.4 300 15.2mm
5 holes*15.2mm 246*48*54 RY269 RYM015(15.2mm) 3.5 500 15.2mm
Anchor head type Strands Number

Dimensions

(OD*H mm)

Compatible Wedge  Material

Compatible PC Strand(Dia)

Post Tensioning System 2 78*44 RYM013/RYM015 45# steel 12.7mm & 15.2mm
3 88*44 RYM013/RYM015
4 98*45 RYM013/RYM015
5 108*45 RYM013/RYM015
6 118*46 RYM013/RYM015
7 118*46 RYM013/RYM015
8 128*49 RYM013/RYM015
9 138*50 RYM013/RYM015
10 148*50 RYM013/RYM015
11 158*52 RYM013/RYM015
12 158*52 RYM013/RYM015
13 168*56 RYM013/RYM015
14 168*56 RYM013/RYM015
15 178*58 RYM013/RYM015
16 188*62 RYM013/RYM015
17 188*62 RYM013/RYM015
18 198*65 RYM013/RYM015
19 198*65 RYM013/RYM015
20 218*68 RYM013/RYM015
21 218*70 RYM013/RYM015
22 218*70 RYM013/RYM015
23/25 229*72 RYM013/RYM015
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