Temperature monitoring system of concrete-filled steel tube arch bridge

Abstract

The invention relates to the temperature monitoring system of a concrete-filled steel tube arch bridge. The system comprises a front end acquisition subsystem, a rear end monitoring subsystem and a heating box located on the external portion of the arch bridge. The front end acquisition subsystem and the rear end monitoring subsystem carry out wireless communication. The front end acquisition subsystem comprises a first metal line, a second metal line, a voltage measurement module, a temperature measurement module, a communication module and a control module. The rear end monitoring subsystemcomprises a receiving module and a processing module. The two ends of the first metal line and the second metal line are twisted into a heat joint and a cold joint respectively. The heat joint is located in concrete. The heat joint is located in the heating box of the external portion of the arch bridge. The temperature measurement module is located in the heating box. The first metal line is electrically connected to the voltage measurement module. The output end of the voltage measurement module is electrically connected to the control module. The temperature measurement module is electrically connected to the control module. The control module is electrically connected to the communication module. The receiving module is electrically connected to the processing module. The internal temperature of the concrete is monitored and the internal temperature of the arch bridge is monitored accurately.

Description

technical field

[0001] The invention relates to the technical field of bridge building monitoring, in particular to a temperature monitoring system for a steel tube concrete arch bridge. Background technique

[0002] Concrete filled steel pipe is to pour concrete into the steel pipe and tamp it to increase the strength and rigidity of the steel pipe. The concrete filled steel pipe technology solves two major problems in the application and construction of high-strength materials for arch bridges. When the arch bridge is exposed to wind, sun and rain, the concrete inside the arch bridge will crack due to temperature stress. If the crack is not known in time, it will easily lead to serious cracking accidents of the arch bridge. Temperature stress is the stress caused by the object's inability to expand and contract freely due to temperature rise and fall, or the temperature of each part of the object is different. In the process of concrete construction, the temperature stres...

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