Bridge pile foundation scouring monitoring method and system thereof

Abstract

The invention relates to a bridge pile foundation scouring monitoring method which comprises the following steps of (1) safely lowering an underwater wall-climbing robot along the surface of a bridgepier; (2) acquiring signals through a sensor and an ultrasonic probe, and enabling the underwater wall-climbing robot to arrive at a position which is 30cm above a water-sediment interface; (3) receiving a signal of an ultrasonic transmitter, pre-processing in a second central processing unit (CPU), storing the signal into a second storage module, and determining the absolute depth of the underwater wall-climbing robot far away from a bridge pile unit under the sea; (4) when being 30cm far away from the water-sediment interface, lowering a telescopic penetration sounding rod with the sensor, calculating the soil thickness when the telescopic penetration sounding rod can arrive at a seabed supporting layer, and monitoring a scouring situation of a scouring interface when the telescopic penetration sounding rod cannot arrive at the seabed supporting layer; and (5) after finishing monitoring, recovering the underwater wall-climbing robot, and reading sensor data in the first storage module through an offshore research vessel data processing system. The inventio further discloses a system implementing the bridge pile foundation scouring monitoring method.

Description

technical field [0001] The invention relates to a bridge pile foundation scour monitoring method and system thereof. Background technique [0002] Local scour of piers is one of the important causes of damage to cross-sea bridges. In recent years, there have been many incidents of bridge destruction due to scour, which caused huge casualties and property losses. [0003] The on-site monitoring of bridge foundation scour can simply and intuitively present the scour depth, and provide reasonable suggestions for bridge managers to carry out bridge foundation scour protection measures in a timely manner. Underwater operations are still the main method for scour detection or monitoring of existing bridge foundations. In addition to naked eye observation by divers, various underwater monitoring equipment are also common, including sonar, radar, time-domain reflectometry (TDR), sliding magnetic rings, etc. , but there are still some shortcomings such as different monitoring accur...

AI Technical Summary

Problems solved by technology

Underwater operations are still the main method for scour detection or monitoring of existing bridge foundations. In addition to naked eye observation by divers, various underwater monitoring equipment are also common, including sonar, radar, time-domain reflectometry (TDR), sliding magnetic rings, etc. , but there are still shortcomings such as different monitoring accuracy, different applicable conditions, difficult underwater installation and operation, and poor economy.

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