Soil pressure tester with flexible testing surface

Abstract

The invention discloses a soil pressure tester with a flexible testing surface. A compression surface of a shell is provided with an elastic testing surface, and the shell and the elastic testing surface are made into a sealing body; the shell is internally provided with a bracket (7) which is provided with a hole (8) and corresponding to the elastic testing surface, and a certain distance is keptbetween the bracket (7) and the elastic testing surface, so that the elastic testing surface is separated from the bracket (7) when being not stressed; the elastic testing surface is stuck with a metal contact (4) which transmits electrical signals outside the tester through a cable (3) by a lead; the shell is provided with a charging hole (5) and a high-accuracy gas pressure sensor (6). The soilpressure tester with the flexible testing surface is used for testing the soil pressure, and has the advantages of high accuracy, simple structure, convenient fabrication and reliable performance.

Description

Earth Pressure Tester with Flexible Test Surface technical field The patent of the present invention relates to a test device that can be placed inside the soil to accurately measure the earth pressure, especially a new device that can automatically adapt to the stiffness conditions of the bulk material to be tested and prevent the soil arch effect from affecting the test results. Background technique At present, in order to ensure the safety of soil retaining structures, it is often required to measure the earth pressure acting on the structure, or to accurately measure the state of earth pressure inside the soil during scientific research. The measurement method widely used at this stage is to embed the earth pressure cell on the structure or in the soil, and then use a reading instrument to read the earth pressure data. However, since the surface of the earth pressure cell is generally made of high rigidity materials such as stainless steel, when the soil deforms, the s...

AI Technical Summary

Problems solved by technology

However, since the surface of the earth pressure cell is generally made of high rigidity materials such as stainless steel, when the soil deforms, the surface of the earth pressure cell forms an arch effect, which greatly affects the accuracy of the measured earth pressure value

If the pressure surface of the earth pressure test equipment is replaced by flexible materials, the accuracy of the earth pressure test can be improved, which is very beneficial to the interpretation of engineering control and scientific test data. There is still no such device

Images