Foundation base model test device capable of bidirectional loading

Abstract

The invention discloses a foundation base model test device capable of bidirectional loading. A force-bearing framework is a rectangular steel frame, a model slot is of a rectangular steel structure, is provided with an upper opening and is formed by welding of a box template, the force-bearing framework is sleeved at the periphery of the model slot, a horizontal actuator counterforce column is vertically erected on the left end part of the model slot, the left end of the horizontal actuator is connected with the horizontal actuator counterforce column, the right end of the horizontal actuator is connected with the top of a pile, the upper end of a vertical actuator is connected with a cross beam at the upper part of the force-bearing framework, the lower end of the vertical actuator is connected with the top of the pile through a vertical dowel steel, a row of drain valves are arranged at the lower part of the left side wall of the model slot, an inlet valve is arranged at the lower part of the right side wall of the model slot, and a water supply pipe of the inlet valve is connected with a constant-pressure water tank. Monitoring is systematic and comprehensive, embedding of monitoring instruments is relatively easy, and automatic and real-time monitoring on multiple physical quantities can be realized. The foundation base model test device disclosed by the invention can be used in conducting model tests like slope foundation, composite foundation and pile foundation.

Description

technical field [0001] The invention relates to the technical field of foundation model test devices, in particular to a foundation model test device capable of bidirectional loading, which provides a bidirectional loading foundation model test device for scientific experiments such as the bearing deformation characteristics of foundations under external loads , the model test device can be used to carry out model tests on slope foundations, composite foundations, pile foundations and the like. Background technique [0002] Foundation is one of the important contents of rock and soil mechanics and engineering research. In the practice of foundation engineering, special rock and soil foundations such as soft clay foundations, expansive soil foundations, and collapsible loess foundations are often encountered, and it is necessary to carry out research on the bearing deformation characteristics of the foundation. The large-scale foundation model test can be used not only for t...

AI Technical Summary

Problems solved by technology

The advantage of the centrifugal model test is that the stress field of the prototype can be reproduced with a smaller model, but the disadvantage is the size effect of soil particles. In addition, due to the small size of the model, it is difficult to select, arrange and embed the measuring instruments

The test platform has many simulation functions, and can produce various disaster-causing and reinforcement conditions. It has a movable reaction beam device, which is convenient for loading tests at different positions and combinations, but it can only be loaded vertically. The groundwater level is passed through the water tank. , the control valve and the water pipe network set at the bottom to adjust, the seepage condition control is single, and it can only simulate the static water level

[0008] According to relevant literature, the size of the conventional geotechnical model test system in the past is relatively small, the size effect is obvious, and the function is relatively simple. In recent years, the size of the model test system is relatively large, and the function has been enhanced. The test system can only be loaded in one direction, and the control of seepage conditions is not ideal, which cannot meet the requirements of scientific research

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