Henan Prestressing Equipment Co., Limited professionally manufacture prestressing and post-tensioning materials, component and pt equipment. The ranges of our prestressing and post-tensioning equipment are: monostrand jack and pump, multistrand jack and pump, bulbing jack(onion jack), duct making machine, duct flatten machine, dead end anchor making machine, strand pusher machine, grouting and mixer machine, and intelligent tension equipment. The following is pictures of our prestressing and post-tensioning equipment.
Prestressing and post-tensioning equipment.
There following my last article 6, this article mainly introduce the post-tensioning and prestressing technology and steps in bridges and building construction for civil work.
According to the regulations of CRCC(China Railways Production Certification Center)and CCPC(China Communications Certificate Center). The prestressing components need to by tested before leave factory and stressing equipment, especially for stressed jack and pump must be calibrated in factory or quality testing center.This can guarantee the materials, components, and pt equipment is qualified and good quality for bridge and buildings construction.
Pictures for our testing equipment for test anchor system, wedges, anchor bearing plate.
Our 1300 tons testing equipment for testing lifting jack and anchor block force
Our testing equipment for testing stressed jack and pump
Our testing equipment for testing prestressed strand cable wire
The following steps are how to install and operate stressed jack and pump for bridge and building construction
Step 1: Installation working anchor block, working wedges, anchor bearing plate. spiral reinforcing rings, if there is continuous beams it need to install multi-strands anchor coupler(include anchor coupler body, working wedges, anchorbearing plate, spiral spring rings, pocket former, constrain rings, dead end anchor)swages anchors).
Stressed end anchor installation
Step 2: After installation of stressed end anchor system, it need to install stressed jack and pump, then install stressing tools such as tooling anchor head, tooling wedges, and limited board, etc.
Tooling anchor system installation
Stressed jack and pump and tooling anchor system installation
Stressed jack for post-tensioning stressing
Stressed pump for post-tensioning stressing
Usually, the tension force and pressure gauges will be calibrated in factory or local quality testing and inspection bureau.It vary from different prestressing projects, the operator should be strictly obey the tension regulation and must be careful in tesnion work in case happen accidents. Especially, the front of strands are forbidden stand any people. And must be marked"safety" principle around the worksite.
We manufacture stressed jack and pump for monostrand stressing(from 10 tons to 30 tons, suitable for tensioning single strand 12.7mm diameter and 15.24mm diameter pc strand), and for multistrands stressing( from 30 tons to 1200 tons, suitable for 15.24mm and 12.7mm 2 nos of pc strands to 55 nos pc strands).
Standard Type Multi-strands Stressing Jack and Pump
But in modern stressing work,we have developed new technology, it is intelligent tension machine. Use this intelligent tension system it can be more precise, more safe, and more efficient in tension work. Because all operation is controlled by computer, and one person can manage all process. It have been save most much labour, and this technol and equipment have been widely used in high speed railway, railway, highway, and big over-span bridge construction, etc. If you have any interest kindly please contact with us(email: sales@pt-concrete.com).
The following is videos links for intelligent tension system
Our intelligent tension system equipment
Engineer are testing the intelligent tension system equipment for oversea customers, after testing, this two intelligent tension equipment will be exported to Malaysia.
About Henan Prestressing Equipment Co., Limited
Henan Prestressing Equipment Co., Limited is a PT Manufacturer from China, our full products range for post tensioning and pre-strssing construction:
1. Materials: pc strand, YJM anchor system(monostrand anchor, multistrands anchor), ducts(metal ducts, HDPE plastic ducts).
2. Equipment: Hydraulic Jack(QYC mono jack, YDC multi-strand tensioning jack), electric oil pump, YH30 embossing machie(onion jack), GYJ500 extrusion machine, ZG130 ducts making machine, grouting pump and mixer for post tensioning),Intelligent Tension System Equipment.
Contact With Us:
Jason Wang
Sales Manager
Henan Prestressing Equipment Co., Limited
Skype : jason.wang569
Email Address: sales@pt-concrete.com
Mobile ＆ Whattsapp(WeChat) No.: +8613673713569
Tel: +86-0371-63228879, Fax: +86-0371-63228879
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