Intelligent prestress tensioning method

Abstract

The invention discloses a prestressed intelligent tensioning method, which adopts prestressed automatic tensioning equipment and its computer control system to replace manual operation control for tensioning. The prestressed intelligent tensioning system is mainly controlled by a program-controlled host, a jack, an oil pump, and a front end. It is composed of a pressure sensor, an oil pressure sensor, a pull-wire displacement sensor, an upper arch displacement measurement sensor, and a wireless transmission network. The stress is used as the control index, and the elongation error is used as the calibration index. The system collects the data of each tensioning equipment through sensing technology. The working pressure and the elongation value of the steel strand are transmitted to the system host in real time for analysis and judgment. At the same time, the tensioning equipment receives system instructions to realize real-time and precise control of the tension force and loading speed. Instructions, synchronously control every mechanical action of each device, automatically complete the entire tensioning process, can accurately control the tensioning force, symmetrical and synchronous tensioning, the influence of environmental factors, and high tensioning quality.

Description

technical field [0001] The invention relates to the technical field of prestressed construction in construction engineering, in particular to a prestressed intelligent stretching method. Background technique [0002] At present, prestressed tensioning in construction projects mainly uses manually operated oil pumps to control the tensioning force for tensioning. There are following deficiencies in this kind of prestressed stretching method: [0003] The deviation of the tensile stress value is large, the tensile force of the prestressed tendons at both ends is not synchronized, the stress application is not synchronized, the anchorage time is short, the unloading speed is fast, and the control error is large; the elongation measurement is not timely and accurate; there are measurement errors in the field record data and record errors; on-site measurement and operation of workers have potential safety hazards, etc. Contents of the invention [0004] In view of the shortco...

AI Technical Summary

Problems solved by technology

[0003] The deviation of the tensile stress value is large, the tensile force of the prestressed tendons at both ends is not synchronized, the stress application is not synchronized, the anchorage time is short, the unloading speed is fast, and the control error is large; the elongation measurement is not timely and accurate; there are measurement errors in the field record data and record errors; on-site measurement and operation of workers have potential safety hazards, etc.

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