Frost heaving force measuring device and its measuring method

Abstract

Provided are a frost heaving force measuring device and method. The measuring device comprises a base, a connecting shaft, a connecting bolt, a guiding shaft, a transferring rod, a transferring rod protecting pipe, a sensor measuring head, a communication plate, a displacement plate and a limiting plate. The device and method are characterized in that when frost heaving soil generates frost heaving and melting effects and has displacement changing, the displacement plate of the frost heaving force measuring device is driven to have synchronous displacement changing, then the transferring rod is driven to have displacement changing, so that the sensor measuring head of the frost heaving force measuring device is under stress, and the magnitude of force can be measured when the frost heaving soil generates frost heaving and melting effects. The connecting shaft, the guiding shaft and the connecting bolt are added between the base and the transferring rod, the connecting bolt is connected with the connecting shaft and the guiding shaft, a hinge mode is used, the structure is simple, burying mounting is convenient, and the measuring method is quick. Machining is easy, and achieving is easy.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering monitoring in cold regions, and in particular relates to a frost heaving force measuring device. The invention also relates to a measuring method of the frost heaving force measuring device. Background technique [0002] In cold regions, the frost heaving of seasonally frozen soil is the main cause of engineering frost damage. Canal structures, such as canal linings and forebays of pumping stations, were damaged by different degrees of frost heaving of foundation soil. Roads or gravel pavements with high-grade pavements and their subsidiary structures, tunnels, retaining walls, sidewalks and slopes, etc., often suffer greater damage due to frost heave in soil or rocks. Cause road damage, affect the passage of vehicles, but also reduce the service life of the road. [0003] In order to avoid frost heave damage, hydraulic structures generally require that the foundation be buried...

AI Technical Summary

Problems solved by technology

[0006] Frost heaving and thawing settlement measurement devices in the prior art interfere with the original state of the frozen soil during the measurement, and cannot be a good prototype to measure the frost heaving and thawing force of the frozen heaving soil

At the same time, the frost heaving force of permafrost often damages the cables of the instrument, resulting in measurement failures

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