Prestressed Material Flat Anchors

If Prestressing strand is collocated in plate-type, you can arrange the prestressing strand into flat redial pattern by flat anchorage to avoiding to in creasing the thickness of plating.

BM15&BM13 TENSION FLAT ANCHORAGE

BM Series flat anchor used for flat structure output.
Flat shape anchor plate usually has 2-5 holes to lock 15.7MM/15.2MM, behind the  anchor plate,there is trumpet shape bolster which used for grouting work, the inside of the trumpet is empty to enable the strand cross through. On the front or back side, there is a bore  hole for grouting.

Prestressing force anchorage

YJM Tensioning System is a complated, independent building measure researched, and developed by TianJin ZhenHua Prestressing Force Technology Co. Ltd. It has been widely adopted by modern construction,especially used in pre-tension or post-tension for concrete constructions and building materials.

YM Series products are composed of tensioning anchor,holding anchor,connectors.It can used to lock the steel strand wires on/under classes of 2000Mpa standard strength,which is usually in diameters of 12.7mm /12.9mm/15.2mm/15.7mm.

It has been verified by pratice that various type of YM anchor also can be used for the different  kinds of strand wires produced according to ASTM/BS/JIS/JIG/AS and  other international standards respectively only if  its technical parameters shall mary the related  detail materials.

BM Flat Anchor consists of anchor head, bearing plate, anchor wedge, spiral reinforcement , plastic or metal corrugated ducts, PC strands(PC wire bundle).The products can be divided into two types according to their strand diameters: BM13 andBM15.

BM Flat anchorage system has the following features:

BM Flat anchorage( anchor block ) system can be used to anchor Φ12.7mm-15.7mm and strength below 2000Mpa PC strands.

BM anchorage is complete in varieties and specifications.Wedge anchorage can be chosen arbitrarily from 2-5 wire PC strand (PC wire bundle) or according to the specific demands of the engineering designs. It is an anchorage system featured by its wide range of the application, easy of the design and simplicity of the process.

If Cutstomer have own design, we can customize according to  DWG.

INSTRUCTIONS: 

1 YM anchorage must be used with YM working wedge, and YM tool anchorage must be used with YM tool wedge. 

2 Work anchorage can't substitute for tool anchorage. 

3 YM series anchorage must be used with the same specification located plates of YM. 

4 Anchorage must be well keeped to prevent rusting and dirts. Before installation, rusting and dirts must be cleand to prevent from damaging the internal thread of wedge which will fill in the alveolar of wedge when tension. 

5 When install anchorage, O Dia of Anchor Head should put in hole of Anchor Bearing Plate, and the restraing plate must in the same direction with the hole of tool anchorage, and the strands cannot be twined around each other and dislocated.

Pre-Stressing Concrete Anchorage Tension Procedure:
I  Preparation:  
1) Clean the remained concrete inside of the anchor bearing plate,wipe the strand out of rusty and mud.
2)Install anchorage, wedges and located plate.
II  Location and installment of tension equipments
1) Get the tension jack ready and put in proper location in spot.
2) Install tool anchor,daub lube oil on outside of tool anchor wedges
III. Tension: 
1)Turn on the hydraulic pump supply oil to jack tank slowly, till oil pressure reach up to the set-up value.
 2) Measuring the extension length of the strand.
 3) Make a data record for tension.
IV. Anchoring: 
1) Loose the stop-current valve, let the pressure back to 0 gradually. When the gauge show zero, the anchoring move has been finished. 
2) The pump collects the oil back to return way tank, the piston back to the bottom as beginning..
3) Unload jack and located plate.
IX. Seal the end
1) Cutting out the over long remaining strand, seal the anchorage with concrete.
2) Grouting the concrete to the corrugated pipe, seal and grouting shall be within 24 hours.