A model test device for the study of pile-soil interaction of anti-slide piles

Abstract

The invention provides a slide-resistant pile pile-soil interaction research model testing apparatus which comprises a model frame and a loading device. A plurality of sliding grooves are formed in the back side face of the model frame, a plurality of slide-resistant piles are arranged in the model frame, each sliding groove is internally provided with at least one slide-resistant pile, the back ends of all slide-resistant piles are located in the sliding grooves, soil pressure boxes are arranged in the model frame at equal intervals, the lower side face of each slide-resistant pile is connected with the upper end of a vertical compression spring, the lower end of each spring is connected with a second pressure sensor, and the second pressure sensors are fixed to the bottom face of the model frame; and the model frame is filled with soil for compaction, the loading device applies pressure to the soil downwards, a first pressure sensor monitors the thrust of soil around the piles underthe effect of the loading force, the second pressure sensors monitor the resistance of the slide-resistant piles, and the model frame is internally provided with a tracking ball for monitoring pile and around-pile soil displacement and glass beads for observing deformation inside the soil. The slide-resistant pile pile-soil interaction research model testing apparatus has the beneficial effects that the soil arch evolution law in the pile-soil synergy deformation evolutionary process is considered, and the basis is provided for the design of the slide-resistant piles.

Description

technical field [0001] The invention relates to the field of geotechnical exploration construction, in particular to a model test device for anti-sliding piles and pile-soil interaction research. Background technique [0002] Anti-slide piles are the main engineering measures for landslide control. The principle is to use the anchoring effect of the stable ground and passive resistance to balance the thrust of the landslide. It has strong anti-slide ability, wide application conditions, is not easy to deteriorate the state of the landslide, and the engineering construction is safe and convenient. It also has outstanding advantages such as further review of geological conditions. However, the current theories and methods of anti-slide pile design are not mature enough, and the bearing characteristics, pile-soil interaction mechanism, load transfer law and slope instability mechanism are still not very clear, which greatly affects the design The accuracy and reliability of th...

AI Technical Summary

Problems solved by technology

However, the current theories and methods of anti-slide pile design are not mature enough, and the bearing characteristics, pile-soil interaction mechanism, load transfer law and slope instability mechanism are still not very clear, which greatly affects the design The accuracy and reliability of the equipment cannot meet the increasing requirements of engineering construction

At present, the design of anti-slide piles considers the deformation of the pile and the soil separately for theoretical calculation. When analyzing the deformation of the soil, it is assumed that the pile is a rigid body and no displacement occurs, which is completely inconsistent with the actual situation.

Therefore, when designing anti-slide piles, the influence of pile spacing, pile deformation, soil resistance in front of the pile on the pile-soil interaction, and the relationship between the transmission process of the rear edge thrust in the soil and the soil resistance were not analyzed. This display is not accurate

Images