A tensile strength measuring instrument capable of controlling soil moisture content and compactness state

Abstract

The invention discloses a tensile strength measuring instrument capable of controlling the water content and compactness state of the soil. The left part of the spindle-shaped plexiglass mold is fixed on the rectangular plexiglass base immediately below it, and passes through the four parts distributed on the base. Two bolts are fixed on the plexiglass base plate. There are two guide rails on the upper right side of the plexiglass base plate along the long side direction and distributed on both sides of the base plate. The plexiglass base with two axles and rollers is installed above the guide rails. The plexiglass base The right part of the spindle-shaped plexiglass mold containing the soil is fixed above, and the traction rope is connected to the center of the right side of the plexiglass base, and is connected to the stress sensor and loading device through the fixed pulley on the right edge of the plexiglass bottom plate. It can accurately capture the instantaneous state of soil sample damage, and compare the data of the stress sensor to accurately locate the damage time and damage state, and can accurately measure the tensile strength of the soil under different water content or compactness states.

Description

technical field [0001] The invention relates to the technical field of soil tensile strength testing, in particular to a tensile strength testing instrument capable of controlling soil moisture content and compactness state. Background technique [0002] The tensile strength of soil is an important index to measure the physical and mechanical properties of soil, as are the strength indicators such as compressive strength and shear strength. During the formation process of the soil, the integrity and integrity of the original rock were damaged to varying degrees, and the mechanical properties showed that it also had a certain compressive strength and shear strength, but the strength value had been greatly reduced, while the tensile strength was greatly reduced. Strength is largely or completely lost. In engineering practice, the compressive strength and shear strength of the soil and the damage resistance of the soil under load are mainly considered and utilized. Considering...

AI Technical Summary

Problems solved by technology

Most of the existing testing instruments based on these methods measure the state of soil with a certain plasticity, and have certain requirements for the moisture content and compactness of the soil, and the measurement accuracy has certain limitations.

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