Zhang method after the product is mainly used for the construction of the anchor under effective prestressed detection, through the PID intelligent control technology in the process of detecting real-time dynamic detection clip displacement and force value linkage, when clip displacement reaches limit, the system automatically control the pump working status, accurate to obtain under the anchor prestress value at the same time, this method can effectively avoid clamping piece disturbance caused by testing, Almost no effect on the original prestressed status, provides the reliable data for the engineering problems of arbitration foundation and favorable conditions, but also solve the other products because of unable to get inflection point and the problem of unable to get accurate numerical, significantly improve the rate with a strength of beam, laid a good foundation for effective evaluation of construction quality.
二． Scope of application
The product is suitable for post-tensile construction of all kinds of prestressed structures, mainly for the bridge longitudinal prestressed, transverse prestressed, vertical prestressed (including fine rebar), negative bending moment, section beam, external beam, etc.
三． Product advantage
1、 The system has strong adaptability, and the initial value can be selected intelligently according to different anchor forms to ensure the test accuracy;
2、the system can automatically identify the balance position, without manual reading of inflection point, effectively avoid the test error caused by uneven friction and the inconsistency of the exposed height of the clip;
3、the system can set limits of force and displacement according to different forms of prestress, effectively ensure the safety of the structure and the original prestress state is not disturbed;
4、The system has a high detection rate and can comprehensively analyze and evaluate the tensile effect of the test construction object;
5、the system can be remote automatic control, detection efficiency and security double guarantee;
6、intelligent human-computer interaction function, so that the detection work more sense of science and technology;
1. Rated pressure: 63Mpa;
2. Maximum flow: 0.2L/min, dynamic adjustable;
3. Displacement stroke: 10mm;
4. Force value range: 0 ~ 300KN;
5. Tension stroke: 100mm (customizable);
6. Single root repeatability: < 0.5%;
7. Systematic error: <±1%FS;
8. Diameter of perforation: φ18.2mm;
9. Test accuracy: 0.5%FS;
10. Can accurately detect the displacement of the clip and control it in real time;
11. Automatic identification of effective prestress test value, without intervention;
12. Remote display of test data and results and control of oil pump working status;
13. Automatically draw the double control curve of force value and clip displacement;
14. Provide database interface service for convenient storage of project data;
15. The equipment has the prestress detection function of special structures such as extendable tightly tied rebar (additional customization)
