Geotechnical compression test hydraulic system and testing method

Abstract

The invention discloses a geotechnical compression test hydraulic system and a testing method, wherein the geotechnical compression test hydraulic system comprises a pressure loading device, an energy storing device and a specimen testing device which are sequentially connected end to end; the energy storing device comprises a large energy storage and a small energy storage which are connected with each other in series; a pressure adjusting device is arranged between the two energy storages; the pressure loading device, the energy storing device, the specimen testing device and the pressure adjusting device are all connected with a data collecting system solely; and the data collecting system is also connected to a data processing and displaying device by a data line. The geotechnical compression test hydraulic system is high in degree of automation, low in cost, low in influence by external environmental factors, low in noise, strong in expandability and small in occupied area. By utilizing the geotechnical compression test hydraulic system and the testing method, the purposes of optimization of the industrial structure, reduction of the number of personnel, low energy consumption and high efficiency are realized.

Description

technical field [0001] The invention relates to a geotechnical compression test technology, in particular to a hydraulic system and a test method for a geotechnical compression test. Background technique [0002] With the development of science and technology, large-scale hydropower stations, dams, and high-rise buildings are born, all of which require their foundations to have solid stability. In engineering construction, soil undertakes different research objects according to different functions. For example, when building houses, bridges, roads, and dams on the soil layer, the soil is used to support the load from the building, and the soil is used as the foundation at this time; when building embankments, earth dams and other geotechnical structures, the soil is used Used as building materials; in addition, such as tunnels, culverts and underground buildings, etc., soil is used as the medium or environment around the building. [0003] The foundation soil in the projec...

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Problems solved by technology

[0008] 1 The maximum pressure of the air pump is limited, and the test equipment cannot be used for high-pressure tests

[0009] 2. The air compressor of the air pump works irregularly. When the air pressure is lower than the limit value, it will start automatically, which will cause people's psychological tension instantly, and the air pump will bring a lot of noise when it works. It is necessary to work in this environment for a long time. will cause some harm to the human body

[0010] 3. It is inconvenient to check for leaks with the air pressure consolidation instrument. When a leak is found, it is necessary to use self-made soapy water to search one by one along the entire pipeline, resulting in a large amount of time lag. Since there are strict time regulations for each level of the test sample, if the leak is detected during the test Severe air leakage occurred, and the test could not be carried out normally, resulting in changes in the mechanical properties of soil samples and distortion of parameters, which affected the later construction design

[0011] 4. Pneumatic consolidation instrument is more affected by external factors, such as failure of power failure, pressure regulating valve, air compressor, etc., which will make the whole test work unable to proceed normally or test data will be distorted, and even cause major testing accidents

[0012] 5 Due to the limitation of the low output pressure of the air compressor, the general pneumatic consolidation instrument can load and test up to 12 soil samples at the same time, and when doing more samples, it is necessary to purchase multiple consolidation instruments and configure multiple air compressors , resulting in a lot of noise pollution, large cost input and large floor area

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