Device for artificially preparing test soil sample of structural intact soft clay and method thereof

Abstract

The invention discloses a device for artificially preparing a test soil sample of structural intact soft clay and a method thereof, relating to the technical field of clay preparation tests. The structure of the device is as follows: a sample preparation barrel is arranged on a lower cross beam of a portal frame; soil slurry is contained in the sample preparation barrel; the upper surface of the soil slurry is connected with a baffle, a force transmission rod, a pressure bearing plate, a pressure sensor, a pressure box, an inverted hydraulic jack and an upper cross beam on the portal frame in sequence along the center axial line of the portal frame, so that a mechanical structure for pressurizing the soil slurry is formed; the hydraulic jack is communicated with a hydraulic device so as to obtain power; the pressure sensor is connected with a pressure tester so as to acquire pressure data. The device disclosed by the invention can well simulate an on-site condition and an initial occurrence condition of the intact soft clay, and can reduce interference to the soil sample; furthermore, parameters such as a void ratio and the like can be set according to needs; the soil sample preparation operating method is simple, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of clay preparation tests, in particular to a device and method for artificially preparing structural undisturbed soft clay test soil samples. Background technique [0002] Structural properties widely exist in natural soils, such as soft and hard clay and granular soils. Through the study of structural soil, the deformation and damage process of natural soil under load can be grasped, so as to provide a basis for the design of structures and foundation reinforcement considering the structural properties of soil. However, precisely because of the structural nature of the soil, it is extremely difficult to obtain a large amount of undisturbed soft clay with the same mechanical properties from the field. And in the process of sampling undisturbed soil, disturbance to undisturbed soil is unavoidable, so it is necessary to conduct indoor experimental research on artificially prepared structural soft clay. At p...

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Problems solved by technology

[0003] However, the above methods of artificially preparing structural soil samples require relatively complete test conditions, and in the p

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