A load simulation experiment device for model pile foundation

Abstract

A model pile foundation load simulation experimental device comprises a model pile foundation, a screw jack, a motor, a loading frame, a reaction beam, and a motor base; the screw jack is used for applying vertical load to the model pile foundation; the motor is used for applying lateral load to the model pile foundation; the loading frame, the reaction beam and the motor base are integrated. The motor is disposed on the motor base. An automatic alignment box is arranged above the screw jack. The automatic alignment box suspended on the reaction beam through two longitudinal bearings on the automatic alignment box can longitudinally move along the reaction beam. The upper portion of the automatic alignment box is provided with four transverse bearings used for limiting transverse shifting of the box. Power output by the motor which applies the lateral load to the model pile foundation is transmitted to the model pile foundation through an eccentric wheel and a transmission bar. The influence of vertical load upon horizontal load of the pile foundation is considered, vertical force generated by a pile foundation cap and a superstructure can be fully considered during a research, and good basis can be provided for the research of pile foundations.

Description

technical field [0001] The invention belongs to a simulation experiment device used in the field of civil engineering, in particular to a load simulation experiment device for a model pile foundation. Background technique [0002] At present, the analysis and research on the load transfer mechanism, failure behavior, bearing capacity, internal force and displacement of foundation piles are mostly limited to the single action of vertical or horizontal loads. Less often, it often bears the effect of horizontal load while bearing axial load. For example, the horizontal force and bending moment generated by the braking force of cranes, trains, and automobiles; the horizontal force and bending moment generated by wind, waves, and tides; the instantaneous horizontal force and bending moment generated by earthquakes, etc. In the design and calculation of pile foundations of buildings, bridges, heavy industrial plants, and offshore oil platforms, they cannot be ignored. When the h...

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Problems solved by technology

At present, there are very few studies on the horizontal dynamic bearing capacity of pile foundations under the consideration of vertical loads. The experimental research on the horizontal dynamic bearing capacity of pile foundations is usually difficult to achieve by using field tests, and the operation procedures are complicated and costly. , the research method of indoor experiment is mostly used

The usual research is done in a laboratory with a large shaking table. The general principle of this method is relatively complicated, requiring special personnel to operate, and the construction cost is expensive.

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