Pile soil interaction displacement stress measurement device under different rock embedding depths

Abstract

The invention discloses a pile soil interaction displacement stress measurement device under different rock embedding depths, which comprises a box body, a soil sample built in the box body, a model pile embedded in the soil sample, a horizontal loading device for providing horizontal load of model pile, and a base located at the bottom parts of the soil sample and the model; the base is providedwith a groove of which cross section is the same as that of the model pile; a cushion block is located in the groove and used for commonly controlling the depth of embedding to the groove along with the base; a stress piece can acquire variable data of the model pile; a camera is used for taking displacement pictures of the soil sample. By applying the device, the displacement stress interacted bythe model pile and the soil sample is measured when the model pile is embedded to different depths of the groove through adjusting the relative height of the base and the cushion block, thus the measured data is more accurate, the cost is reduced. The invention further discloses a pile soil interaction displacement stress measurement system and method under different rock embedding depths, whichhave corresponding technical effects.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering model test equipment, in particular to a displacement stress measurement device for pile-soil interaction under different rock-socketed depths, a displacement-stress relationship measurement system and a method. Background technique [0002] In deep-sea drilling platforms, high-rise buildings, large-scale foundation pit projects, port terminals, seismic engineering and other infrastructure constructions, the pile foundation mainly bears horizontal cyclic loads or horizontal dead loads such as wave loads, strong wind loads, earth pressure, and water pressure. It is closely related to the embedding depth of the pile foundation. Therefore, the research on the joint displacement stress of pile and soil has important theoretical and practical significance. [0003] At present, the research on the displacement stress of pile-soil interaction is to embed model piles into different depths...

AI Technical Summary

Problems solved by technology

However, in actual construction, in order to improve the stability of the pile foundation, most of the pile foundations are embedded in the rock formation. When the embedding depth is too small, the structure may be overturned. When the embedding depth is too large, it will lead to a sharp increase in costs

Therefore, only the influence of different depths of model piles embedded in soil samples on the displacement stress of pile-soil joint action is studied, and there are large deviations between the measured displacement data and stress data and the actual construction conditions

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