Single pile vertical dynamic and static load loading test device and method

Abstract

The invention provides a single pile vertical dynamic and static load loading test device and a method. The loading test device comprises a support assembly, a loading control system and a data collection system, wherein the support assembly comprises a model box, a loading framework and a counterforce framework; the loading framework is arranged at the upper part of the model box; the counterforce framework is arranged on the periphery of the model box; the lower part of the loading framework is connected with the upper part of the counterforce framework; the loading control system comprisesa servo electric cylinder, a servo driver, a PLC and a PC; the servo electric cylinder is arranged on the loading frame; the servo electric cylinder, the servo driver, the PLC and the PC are sequentially and electrically connected; the data collection system comprises a displacement sensor, a soil pressure box, a plurality of strain gages and a strain meter; the displacement sensor is arranged onthe loading framework; the soil pressure box is buried under a single pile; and the plurality of the strain gages are stuck inside the single pile. The stress characteristics of highway and railway bridge pile foundation piles under the effect of vertical dynamic and static combined load can be really simulated.

Description

technical field [0001] The invention relates to the field of pile foundation model tests, in particular to a loading test device and method for vertical dynamic and static loads of a single pile. Background technique [0002] With the continuous development and progress of society, various high-rise buildings, highways, bridges, inland wharves and coastal port facilities and other large buildings are planned and constructed. These large buildings will have more and more requirements for the bearing capacity and deformation of the foundation. high. In this situation, pile foundations are widely used due to their advantages of high bearing capacity, small deformation, good stability and relatively simple construction. Existing road and railway bridge pile foundation piles are often affected by vertical combined loads such as the self-weight of the superstructure and vertical live load. The bearing characteristics of monopile become very necessary. [0003] Because the indoo...

AI Technical Summary

Problems solved by technology

The traditional indoor single pile vertical loading device usually applies a certain static load to the top of the pile through a jack or a lever, and cannot effectively apply the combined load of static load and dynamic load

At the same time, the traditional jack cannot c

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