Dilatometer testing soil vertical deformation

Abstract

The invention relates to a dilatometer testing soil vertical deformations; the dilatometer comprises a pedestal and an indicating gauge; the pedestal is provided with a groove; the pedestal side wall is provided with a water inlet; a counter force ring is arranged in the groove; a through hole is arranged in the counter force ring, and comprises a large diameter portion in the lower portion and an upper portion small diameter portion, wherein the large diameter portion is matched with the outer diameter of a sampling spoon, the small diameter portion is matched with the inner diameter of the sampling spoon, and a push block capable of moving up and down is arranged in the small diameter portion; a column is vertically arranged on one side of the pedestal, and provided with a cross bar having the indicating gauge; a load carrying pointer of the indicating gauge makes contacts with the push block; the advantages are that the counter force ring gravity can replace the counter force device of an existing counter force cover + screw; the dilatometer is simple in operation, and the sample dismount / assembling efficiency can be at least improved by 50%, thus prolonging the equipment service life; the dilatometer is smooth in surface, and easy to clean.

Description

technical field [0001] The invention relates to the field of soil testing instruments, in particular to a dilatometer for testing the vertical deformation of soil. Background technique [0002] The expansion of the foundation soil will cause the house to crack, the water channel will repeatedly landslide, the slope will be damaged, and the road will be destroyed. Many countries have invested a lot of manpower and material resources to control the geotechnical engineering problems caused by the expansive soil. Scholars at home and abroad have been working hard to solve this hazard for many years. . Expansion rate is an important index to judge whether the foundation soil has expansibility. Using a dilatometer to measure the vertical deformation of the ring knife sample is a common method in engineering, but the existing dilatometer uses three screws and small thread holes corresponding to the base to fix the reaction device and the base, and then fix the clamp on the reactio...

AI Technical Summary

Problems solved by technology

Using a dilatometer to measure the vertical deformation of the ring knife sample is a common method in engineering, but the existing dilatometer uses three screws and small thread holes corresponding to the base to fix the reaction device and the base, and then fix the clamp on the reaction device It is difficult to install and disassemble the dilatometer, it is difficult to control the level of the reaction device, which affects the test results, and the equipment is not corrosion-resistant

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