Waste tire-soil vertical interface shear characteristic testing method

Abstract

The invention discloses a waste tire-soil vertical interface shear characteristic test method, which comprises the following steps of: firstly, sequentially installing a servo control system, a sample system, a confining pressure loading system and a data acquisition system, filling a waste tire with a soil sample II, then installing the waste tire on a push-pull actuating rod, and loading the soil sample II on the push-pull actuating rod; a confining pressure air bag and a soil sample I are sequentially and annularly arranged in the annular shearing box from outside to inside, and the radial inner side face of the soil sample I makes contact with the outer side face of the waste tire; finally, horizontal and vertical loads are provided for the waste tire-soil vertical interface through a confining pressure air bag and a top spiral disc respectively, a hydraulic servo motor is started to apply stress to a push-pull actuating rod for a shear test, and shear mechanical parameters are calculated according to stress data obtained under different load conditions. The method provided by the invention is suitable for carrying out shear test on the waste tire-soil vertical interface under different burial depth and size conditions.

Description

technical field [0001] The invention relates to the technical field of reinforced soil engineering, in particular to a method for testing the shear characteristics of a waste tire-soil vertical interface. Background technique [0002] In recent years, with the continuous growth of automobile production, the number of waste tires that have been eliminated has also increased dramatically year by year. The accumulation of a large number of waste tires not only occupies land, but also pollutes the natural environment. Improper handling of them will bring serious environmental problems and harm The surrounding residents are in good health. Therefore, how to recycle waste tires scientifically, environmentally friendly, economically, safely and efficiently is a major practical problem to be solved urgently. At present, waste tires have been used in reinforced soil projects such as strengthening rock and soil slopes, retaining walls, embankments, and weak foundations due to their g...

AI Technical Summary

Problems solved by technology

At present, there are few mechanical testing devices for the entire waste tire reinforced soil and the waste tire-soil interface, and most of them intercept a certain tire piece for shearing test, which is far from the actual application situation, and it is bound to fail to reflect the whole waste tire. Shear Mechanical Properties of Tire-Soil Cylinder

[0004] Some researchers have further developed a mechanical testing device that can involve the entire tire interface. However, due to the limited function of the device itself, only the shear test of the horizontal interface can be realized, and neither the shear test of the vertical interface nor the horizontal interface can be realized. The test of the influence of earth pressure on the mechanical properties of the reinforcement-soil vertical interface at different depths is not applicable to the test of the interface mechanical properties of different sizes (tire diameter and tread height, etc.)

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