A kind of fiber drawing creep testing device and testing method thereof

Abstract

The invention discloses a fiber drawing creep test device, which comprises a ring knife with a hole, a pressurized upper cover, a pressurized frame, a bracket, a lever, a counterweight, a universal fixture, a metal wire, and a fixed pulley. The hole ring cutter is filled with soil samples compacted in two layers, the universal fixture is close to the side wall of the hole ring cutter, and one end of the fiber to be tested is placed in the hole ring cutter and filled in the The layered compacted soil samples in the perforated ring knife are pressed and fixed, and the other end passes through the universal fixture and is connected to one end of the metal wire, and the other end of the metal wire passes through the fixed pulley and then is suspended and connected to the second end. A weight plate, a vertical round bar is connected to the pressurized frame, the lower end of the round bar is pressed on the pressurized upper cover, and the pressurized frame is connected with the lever after passing through the bracket. The device of the invention can simulate the whole process of the force mechanism of fiber drawing in fiber reinforced soil, and provide accurate and detailed test data for the design of fiber reinforced soil and the analysis of optical fiber sensor monitoring data.

Description

technical field [0001] The invention relates to the technical field of soil reinforcement and optical fiber monitoring engineering, in particular to a fiber drawing creep testing device and a testing method thereof. Background technique [0002] In recent years, fiber reinforcement (Fiber reinforcement) technology has been more and more widely used in various soil reinforcement projects due to its advantages of simple construction, good mixing uniformity, and no environmental pollution problems. Fiber can be divided into artificial synthetic fiber and natural organic fiber according to the type. Synthetic fibers have the characteristics of high strength, good acid and alkali resistance, and are more popular in current engineering practice. Natural organic fibers such as sisal, coconut, and bagasse are cheap, degradable, and environmentally friendly, and are also used in some projects. Studies at home and abroad have shown that the fiber reinforcement method can effectively...

AI Technical Summary

Problems solved by technology

However, the mechanical properties of the optical fiber-rock-soil interface may have obvious time effects, which will have a great impact on the coordination of the deformation of the optical fiber and the rock-soil body and the reliability and accuracy of the long-term monitoring data of the optical fiber.

At present, there is no special test equipment for measuring the mechanical properties of the optical fiber-rock-soil interface, especially the creep properties of the interface.

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