With the rapid development infrastructure constructions, prestressed technology is widely used in recent years. The steel strand prestrssed anchorage and coupler are extremely important for high way, bridge, water conservation project and electric power station etc. To ensure the quality, we not only need to test the load properties of steel strand, but also need to test the capacity of anchorage, coupler and connectors. MGW-5000 Static Strand anchorage and coupler capacity testing machine is specially designed for anchorage and coupler capacity test.

two      major function 
This machine is specially used for static load anchorage performance test of steel strand clamps and anchorages. The static anchorage performance of the anchorage is determined by the efficiency coefficient of the prestressed tendon measured by the static load test of the steel strand anchorage assembly η A and the total strain of the prestressed tendon when the measured ultimate tensile force is reached ε APU confirmed.
three      main features 
3.1.      Host system
The structure of the testing machine is shown in the figure below: the main machine adopts a four column horizontal structure, the test force is applied by a hollow jack, the force is measured by a hollow sensor, the single steel strand is pre tightened by a front card jack, the electric oil pump is loaded, and the manual valve is loaded. The sensor is removed separately for calibration. The wire type photoelectric encoder measures the stroke of the hollow jack.
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1 - tension end fixture or anchorage 2 - hollow jack 3 - displacement measuring device 4 - main frame
5 - steel strand test piece 6 - hollow sensor 7 - fixture or anchorage at fixed end
3.2.      Measurement of internal shrinkage △ A and clip displacement △ B
When the tension equipment is used to pull to 10% of the standard value of tensile strength fptk of steel strand, measure l0 and the stroke L1 of piston jack, measure dimensions a and B, and when the prestress reaches 20%, 40%, 60% and 80% of the standard value fptk of tensile strength, measure △ A and △ B respectively. The △ A and △ B of qualified anchorage shall be proportional to the stress increment.
a. Position before anchoring and after jacking B. position during loading and after anchoring
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3.3.      measurement system 
The measuring system is designed by computer plug-in card. It has compact structure and powerful function. In the test, it can collect the test data (force and displacement) in real time, display the force time, force displacement, displacement time and other curves, process the data, distinguish the characteristic points, and store, query, analyze the curve and print the test report.

Standards: It conforms to GB/T 14370-2007, JT329.1-1997, JT329.2-1997.
four      Main technical parameters
4.1.      Maximum test force: 5000kN;
4.2.      Test force measurement range: 100kn-5000kn;
4.3.      Relative error of test force indication value: < indicating value ± 1%;
4.4.      Tensile distance: 3400mm;
4.5.      Piston stroke: 200mm;
4.6.      Displacement measurement range: 0-200mm;
4.7.      Resolution of displacement measurement: 0.01mm;
4.8.      Displacement measurement accuracy: ± 1%FS.
five      System configuration list
5.1.      Host system
5.1.1.      Host framework          1 set
5.1.2.      5000kN hollow jack                                                      1
5.1.3.      250kN front clamp jack                                                      1
5.1.4.      Electric oil pump                                                                 2 sets
5.1.5.      5000kN hollow load sensor                                                  1
5.1.6.      Displacement measuring device (photoelectric encoder)                  1 set
5.2.      Electrical part
5.2.1.      Electrical components                              Famous brand                          1 set
5.2.2.      Wire and cable                                                                  1 set
5.3.      measurement system 
5.3.1.      The general test software under Chinese Windows platform                                      1 set
5.3.2.      Multi function test data acquisition card                                                  1
5.3.3.      computer                              Lenovo brand commercial machine                      1 set
5.3.4.      printer                              HP A4 inkjet printer                      1 set
5.3.5.      betaware                              Gold test technology                              1 set
5.4.       Test attachment
5.4.1.      Ym15 Series 1, 3, 4, 5, (6) 7, 8, 9, (11) 12, 14, 16 hole pad          1 set each
5.4.2.      Ym15 series flat anchor plate             ( 2. 3, 4, 5 holes)                          1 set
5.4.3.      Long and short top sleeve and anchor unloader          1 piece each
5.5.      other
5.5.1.      Safety protection sand box                                                          2
5.5.2.      Installation and debugging tools                                                  1 set
5.5.3.      Technical documents with instructions, certificates of conformity, packing list and so on                          1 set
six      Installation conditions
6.1.      Power supply: 380V, 50Hz, three-phase.
6.2.      Lifting devices, such as driving, etc. must be available on the site.