A Loading System Based on Geotechnical Centrifuge to Apply Vertical Load

Abstract

The invention relates to a loading system for applying vertical load based on a geotechnical centrifuge, which is composed of a load-bearing bracket standing on the side plate of a model box, a loading mechanism placed on the load-bearing bracket and a controller for controlling the loading mechanism. The model in the model box applies a vertical load, and the output shaft of the stepper motor (11) is successively connected with the vertically arranged reducer (10), coupling (9), screw mandrel (13), and is sleeved on the screw mandrel. The nut base (5) constitutes the power transmission chain; the screw nut (6) is fixed on the nut base (5), forms a whole with the two thrust rods fixed on the nut base (5), and the screw nut drives the thrust seat ( 15) Load and unload the model. The loading system of the present invention can effectively overcome the defects existing in the existing loading technology, provide a more scientific loading method for the geotechnical centrifugal model test, and provide an important technology for further studying the deformation and failure mechanism of soil and buildings (structures) support.

Description

technical field [0001] The invention belongs to geotechnical test equipment, in particular to a loading system for applying vertical load based on a geotechnical centrifuge. It is mainly used in the geotechnical centrifugal test environment to simulate the load of buildings (structures), so as to truly reproduce the interaction relationship between the prototype soil and structures, and provide a basis for further research on the deformation and failure mechanisms of soil and buildings (structures). important technical support. Background technique [0002] The geotechnical centrifuge model test is to place the 1 / n scale model in a special centrifuge and conduct the test in the space of ng centrifugal acceleration. Due to the absolute equivalence of inertial force and gravity, and centrifugal acceleration will not change the properties of foundation materials, their mechanical characteristics can also be kept similar under the premise of ensuring similar geometry to the pro...

AI Technical Summary

Problems solved by technology

However, the worm gear of this mechanism is seriously worn, and the phenomenon of heat generation and oil leakage of the reducer is common; and the system uses a single-chip microcomputer as the controller, and its anti-interference ability is relatively poor, and the system needs to design its own power supply, so the reliability of the system operation is difficult to guarantee.

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