Novel power lateral confinement compression test device

Abstract

The invention provides a novel power lateral confinement compression test device. The novel power lateral confinement compression test device comprises a compression apparatus and a displacement measuring module, wherein the displacement measuring module is used for monitoring the position change of a sample. The novel power lateral confinement compression test device is characterized by also comprising a vertical load loading module, a water level fluctuating module, a dry and wet circulating module and a sample deformation monitoring module; the vertical load loading module is arranged at the top part of the compression apparatus, and is used for providing a vertical load for the sample; the water level fluctuating module is connected with one side of the compression apparatus, and is used for simulating a tide load; the dry and wet circulating module is connected with the bottom part of the compression apparatus, and is used for simulating rainfall and evaporation; the sample deformation monitoring module is arranged at the side of the compression apparatus, and is used for observing and recording the deformation of the sample in the experiment process. The novel power lateral confinement compression test device has the advantages that in a lateral confinement compression test, multiple power loads can be loaded to the sample, the complicated conditions in the project practice are simulated, the soil stress state is truly reflected, and the change of compression characteristic of the soil under the action of external load is measured.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and in particular relates to a novel dynamic confinement compression test device. Background technique [0002] Confined compression test is a common content in geotechnical tests. Through confining compression test, the compressibility of soil is measured, and it is used to analyze the settlement of building foundations and roadbeds. The conventional method of confining compression test is to put the soil in a fixed-volume steel container, cover the upper part of the soil with a steel pressure plate, and amplify the structure through a force arm composed of weights and levers, and apply static pressure to the pressure plate on the soil. The pressure, and the compression deformation of the soil is analyzed by measuring equipment such as a dial gauge, which has the characteristics of a simple structure. But as we all know, in the real environment, the load on the upper part of the soil is ...

AI Technical Summary

Problems solved by technology

But as we all know, in the real environment, the load on the upper part of the soil is not always a static load. Impact rolling, vehicle moving traffic load on the upper part of the roadbed, oil storage tank liquid level rises and falls repeatedly, these are all dynamic loads, the loads on the foundation in these places are all dynamic loads, and the existing conventional geotechnical test devices cannot complete dynamic loading, and cannot Simulate dynamic complex situations in engineering practice

In addition, environmental loads, such as seaside and coastal areas, due to tidal effects, water level fluctuations will also cause foundation settlement. It can be seen that the effect of environmental hydrodynamics on the foundation also needs to be considered; at the same time, in some areas with frequent rainfall and evaporation, due to dry The change of the properties of the soil itself due to the wet cycle will also lead to the settlement and deformation of the foundation. It can be seen that the settlement and deformation of the foundation under these environmental loads is also a very important geotechnical engineering problem. Confined Compression Test Function

At the same time, most side-limited compression devices adopt a mechanical force transmission structure, and the load is applied through the action of levers and weights. Because the weight itself is relatively heavy, and there are problems such as time difference between loading and unloading, and the swing of the lever itself, it is also inconvenient to operate. , the device of the present invention provides a lateral compression device capable of applying complex dynamic loads to the lateral compression box, and adopts pneumatic as the pressure source, which has the characteristics of simple and quick pressure regulation and high timeliness of collection

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