A pile foundation visual model test limit device and using method

Abstract

The utility model relates to a limit device for a pile foundation visual model test. A model clip is arranged on the chute; a pile foundation model is arranged in the model clip; a wheel shaft is arranged in the slot at the bottom of the chute; The inner threaded pipe is connected; the inner threaded pipe is connected with the threaded column; the partition plate at the lower end of the inner threaded pipe is provided with a miniature pressure sensor and signal line; the miniature pressure sensor is connected with the spring; the spring is connected with the backing plate; Pad; the steps of the method of use are: assemble the limit device; adjust the position of the model clamp, and clamp the pile foundation model; put the pile foundation model into the soil of the test model box; On the inner wall of the test model box; fine-tune the rotating internal threaded pipe, observe the horizontal support force, and stop the rotation when the design load value is reached; fill the model soil in the test model box; apply load to the pile foundation, and complete data collection; it can effectively prevent soil particles Enter the subtle gap between the foundation and the transparent model box wall.

Description

technical field [0001] The invention belongs to the technical field of limiting devices for foundation engineering construction, and in particular relates to a limiting device for a pile foundation visualization model test and a use method thereof. Background technique [0002] With the vigorous development of my country's infrastructure construction, there are more and more railway, highway, bridge and wharf construction projects, and they are constantly being carried out in remote and difficult areas. The pile foundation can transmit the load of the superstructure to the soil around the pile and the deep foundation, the structure is reliable, and the settlement of the foundation is greatly reduced. Practice has proved that the pile foundation is a safe and reliable foundation form, and it has been widely used in bridge structures crossing rivers, rivers, lakes and lakes and waterfront wharves in China. [0003] The model test method is one of the important methods of basi...

AI Technical Summary

Problems solved by technology

[0004] In the existing visual model tests, considering that the normal shooting of the foundation can not be blocked, nor can it hinder its normal movement, the pile foundation is often placed in the model soil directly against the side wall of the model box, and the fine soil particles around the foundation are extremely easy to Into the tiny gap between it and the transparent model box wall, and these soil particles cannot be removed, which brings great difficulties to the test

In addition, due to the lack of model limit devices, the pile foundation model is prone to inclination during the loading process, causing test deviations and greatly reducing test accuracy

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