Rock-soil model three-dimensional loading test system based on underground lifting platform

Abstract

The invention discloses a rock-soil model three-dimensional loading test system based on an underground lifting platform. The system comprises a model box and a three-dimensional loading system, and the three-dimensional loading system comprises a rectangular foundation pit, wherein a rectangular horizontal loading frame is arranged in the rectangular foundation pit, and a platform for placing the model box and a driving mechanism for driving the platform to ascend and descend are arranged between stand columns of the horizontal loading frame, and a height-adjustable cross beam is further arranged between every two adjacent stand columns. A horizontal actuator with the transversely-adjustable position is installed on the cross beam; a height-adjustable main beam is arranged above the horizontal loading frame in a spanning manner; and a vertical actuator with the transversely-adjustable position is arranged on the main beam. The test system is designed on the basis of the underground lifting platform. Compared with a traditional test system, the system can select different test boxes according to different test items, adjust the position of the loading force in the three-dimensional direction according to the sizes of the test boxes, can be suitable for various tests and is high in applicability.

Description

technical field [0001] The invention relates to the field, in particular to a three-dimensional loading test system for a rock-soil model based on an underground lifting platform. Background technique [0002] With the continuous development of the field of geotechnical engineering, many geotechnical engineering problems involving rich groundwater, complex geological conditions, and complex construction environments emerge in an endless stream, while foundation pit engineering and slope engineering have also emerged deep, large-scale, and complex construction problems. new trend. According to statistics, at the beginning of the 1990s, the deepest foundation pit in my country was about 20m, but at present, the depth of deep foundation pits in China is also more common at 30 to 40m. Complex slope problems such as slopes also continue to bring challenges to researchers and technicians. In the face of complex problems in geotechnical engineering, large-scale geotechnical engi...

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Problems solved by technology

[0004] However, the existing engineering model experiment system has a fixed actuator placement position, model box size and placement location, and there is a problem of insufficient flexibility. Usually, an engineering model experiment system can only be tested for a specific rock and soil environment, and its versatility is poor.

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