Bridge pile foundation scouring variation real-time tracking and monitoring system, and monitoring method thereof

Abstract

The invention discloses a bridge pile foundation scouring variation real-time tracking and monitoring system, and a monitoring method thereof. The bridge pile foundation scouring variation real-time tracking and monitoring system comprise a pile foundation and a bridge pier arranged on the pile foundation, wherein a data processing system is fixedly arranged at the top part of the bridge pier, thebridge pier is fixedly provided with a fiber grating miniature seepage pressure sensor at a position below the water surface, spherical sunken iron is arranged at a position close to the pile foundation on a river bed at the bottom part of the pile foundation, the spherical sunken iron is provided with four fiber grating pressure sensors and the fiber grating miniature seepage pressure sensor onthe surface, and an optical fiber gyroscope is carried in the spherical sunken iron. The top part of the spherical sunken iron is connected with and fixed to the top part of the bridge pier by means of an iron chain or a steel twisted wire. The bridge pile foundation scouring variation real-time tracking and monitoring system has the beneficial effects that the bridge pile foundation scouring variation real-time tracking and monitoring system can be widely used in newly-constructed or constructed bridge engineering safety monitoring environment, and has the advantages of high durability, highprecision, simple structure, real-time monitoring, easy engineering layout and the like.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a real-time tracking and monitoring system and a monitoring method for scour changes of bridge pile foundations. Background technique [0002] China is a country with many mountains and rivers, and it is a country with great bridges. With the development of science and technology, my country has now ranked among the top in the world in terms of bridge construction technology and the number of bridges. All kinds of super-large bridges across the river and sea, as well as overpasses and viaducts with complete functions and beautiful appearance, have sprung up like mushrooms after rain. At present, there are more than 1 million highway bridges in the country, which were built in different periods. [0003] my country's geological conditions are complex. Many roads and railway bridges are located on rivers, seas and lakes. The substructure of the bridge supports the entire super...

AI Technical Summary

Problems solved by technology

However, these methods still have shortcomings: first, these methods generally cannot be tested continuously in real time, and need to be observed regularly, and cannot eliminate the influence of the complex reciprocating changes of the scour-silt layer, and cannot consider the sediment in the lower layer of the interface. The density of the layer changes, so it is impossible to accurately know whether the soil pressure on the side of the pile foundation has changed

Second, this method cannot monitor the changes in earth pressure caused by the scour near the bridge pile foundation, and what is obtained is the evolution of large-scale underwater terrain scour, and the pile side is the blind spot of the test instead.

[0005] Aiming at the complex water environment where the bridge scours and the difficulties of scour monitoring, the present invention provides a real-time monitoring system for the scour of the bridge pier pile foundation, which can monitor the dynamics of the scour of the bridge pile foundation in real time, self-adaptively track the bearing layer, and eliminate The impact of the silt layer on the monitoring does not affect the normal operation and traffic of the bridge, and has the advantages of simple operation, stable performance, and accurate monitoring data.

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