Jack-based experiment model and method for simulating uneven settlement of foundation

Abstract

The invention relates to a jack-based experiment model for simulating the uneven settlement of a foundation. The experiment model comprises a model box with an upper opening and is characterized in that a base frame is arranged at the bottom of the cavity of the model box, the base frame is formed by partition plates, square cells are arranged among the partition plates, a prefabricated plate is arranged in each square cell, and jacks are arranged below each prefabricated plate and connected with a hydraulic system. An experiment method includes the steps of a, building the model box; b, arranging the base frame; c, arranging the jacks and the prefabricated plates; d, filling a foundation layer; e, building an upper engineering structure layer; f, simulating foundation settlement; g, collecting and analyzing data. The experiment model and method has the advantages that the jacks can drive the ascending and descending of the prefabricated plate in the corresponding square cell, and accordingly multipoint uneven settlement simulation of the foundation layer can be achieved; the multipoint uneven settlement of the foundation can be analyzed by collecting and analyzing the data output by sensors, and the experiment model and method is good in simulation effect, low in cost and high in experiment repeatability.

Description

Technical field [0001] The invention relates to a test model and method for simulating the uneven settlement of the foundation, more specifically, to a test model and method for simulating the uneven settlement of the foundation by the lifting of a jack. Background technique [0002] Affected by multiple factors such as external load, temperature, water, etc., structures such as highways, railway subgrades, buildings, etc. are prone to uneven foundation settlement. The mechanism and prevention of uneven foundation settlement can be achieved through theoretical calculations, numerical simulations, model tests, Research methods such as field testing. Among them, the model test is to restore the engineering structure on a scaled scale, which can realize the monitoring, multi-condition control, and repeatability of the deformation of the simulation object. It is an effective means to study the force and deformation of the engineering structure. It is through the foundation model and ...

AI Technical Summary

Problems solved by technology

The model box is a common equipment for scale model testing. The current model box adopts the model making method of paving the foundation soil in layers, which cannot simulate the subsidence deformation of the underlying foundation soil, and cannot realize the simulation of uneven settlement.

Theoretical calculation and numerical simulation can reflect the changing law of foundation force and deformation to a certain extent, but the error with the actual situation is large, and the accuracy needs to be improved. Although the field test can most intuitively reflect the problem of uneven settlement, the cost is high and it is difficult to carry out multi-influence Repeated tests under factor control and model tests have both advantages, so it is of high engineering value to develop a test model that can simulate uneven settlement of the foundation

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