Offshore wind power concrete floating foundation structure crack monitoring system and method

Abstract

The invention relates to the field of concrete structure crack monitoring, and discloses an offshore wind power concrete floating foundation structure crack monitoring system and a corresponding monitoring method which are suitable for the marine environment and can be well matched with an anti-corrosion coating. The monitoring system comprises a main control computer, a photoelectric signal transceiver array and an optical fiber network, wherein the photoelectric signal transceiver array and the optical fiber network are positioned below an anti-corrosion coating and are adhered to a concrete floating foundation structure; the photoelectric signal transceiver array comprises photoelectric signal transceivers which are combined and arranged on the surface of the concrete floating foundation structure according to a certain position; the optical fiber network is connected with photoelectric signal transceivers, and each photoelectric signal transceiver communicates with the main control computer.

Description

technical field [0001] The invention relates to the field of crack monitoring of concrete structures, in particular to a system and method for monitoring cracks of an offshore wind power concrete floating foundation structure. Background technique [0002] The concrete structure in the marine environment will be corroded by chloride ions, magnesium ions and sulfate ions in seawater. These harmful ions will enter the concrete through the concrete pores, and will interact with the calcium hydroxide and calcium aluminate hydrate in the concrete. The resulting insoluble salts tend to have large volume expansion, resulting in a large internal stress inside the concrete pores, and long-term accumulation causes cracks in the concrete. In addition, the chloride ions in seawater will also penetrate into the concrete through the cracks in the concrete, causing the surface of the steel bars in the concrete to corrode, thus seriously affecting the durability of the structure, and at the...

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Problems solved by technology

[0003] However, the damage monitoring schemes for concrete structures in the prior art cannot be applied to the marine environment. For example, the "Structural Damage Monitoring System and Method Based on Piezoelectric Ultrasonic-Smart Grid" proposed by Zhang Benniu et al. The sensitive wires used are metal wires, which are prone to corrosion in the marine environment and cause the monitoring system to fail, and the monitoring system contains complex control circuits. Adhesion to the concrete surface causes the anti-corrosion coating to fall off easily and accelerates the corrosion of the foundation structure

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