Cable force monitoring system and monitoring method of wide-span pre-stress stay cable steel structure

Abstract

The invention discloses a cable force monitoring system and monitoring method of a wide-span pre-stress stay cable steel structure. The monitoring system comprises a monitoring host and multiple groups of stress gatherers. The stress gatherers are in wireless connection with the monitoring host, each group of stress gatherers are composed of a plurality of upper radial cable stress gatherers, lower radial cable stress gatherers, ring cable stress gatherers, ring beam stress gatherers and steel column stress gatherers. Each stress gatherer is externally connected with a strain sensor. According to the invention, the multiple groups of stress gatherers are arranged in a wide-span space cable truss structure system so that stress change of major bearing structures can be continuously monitored in real time and monitoring data is transmitted to the monitoring host in a wireless mode for recording, analyzing, calculating and management, thus the onsite maintenance difficulty and cost are greatly reduced, and the system stability and convenience are also improved.

Description

technical field [0001] The invention relates to a measuring device, in particular to a cable force monitoring system and a monitoring method of a large-span prestressed cable steel structure with wireless networking, remote monitoring and accurate data. Background technique [0002] The research on construction monitoring technology of large-scale civil engineering structures mainly focused on highway bridges, dams, and offshore platforms in the early stage. The construction monitoring of long-span steel structures started relatively late. Theoretical and applied research of this technology is being carried out competitively, and various advanced testing methods such as photoelectric, ultrasonic, electromagnetic, etc. have been applied. It is also the most common application in bridge engineering. For example, the stress monitoring of the tensioning process of the prestressed cables of the Jiangsu Tongyu River Project Main Canal Highway Bridge was carried out. [0003] As a...

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Problems solved by technology

[0006] The invention mainly solves the technical problems that the existing monitoring devices adopt wired layout, is greatly affected by the outside world, and difficult to lay cables, and at the same time solves the problem that the data measurement and transmission process has large errors and affects the measurement accuracy; it provides a wireless networking, Long-span prestressed steel structure cable force monitoring system and monitoring method with remote monitoring and accurate data

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