Indoor model for reinforcing soft sandy soil foundation through reinforcement method

Abstract

The invention discloses an indoor model for reinforcing a soft sandy soil foundation through a reinforcement method, and belongs to the technical field of foundation test models. The technical problemto be solved is to provide the indoor model for reinforcing the soft sandy soil foundation through the reinforcement method which can be used in various experiments, and through which various data can be acquired visually and conveniently. The technical scheme adopted by the invention is as below: a model box is a square transparent box with an opening at the top; the reinforced soil is sandy soil which is added with one or more layers of reinforced materials; a loading mechanism is a pneumatic jack which is fixed above the center of the model box by a loading support; two horizontally arranged strain gauges are fixed on each layer of reinforced materials; a plurality of soil pressure boxes in pairs are arranged on each layer of reinforced materials; each pair of soil pressure boxes is located on the upper and lower surfaces of the reinforced materials; all strain gauges and soil pressure boxes are connected with a data acquisition device; the data acquisition device is connected witha computer; and a high-speed camera is arranged on a side surface facing the model box. The invention provides the loading test model for reinforcing the soft sandy soil foundation through the reinforcement method.

Description

technical field [0001] The invention discloses a reinforcement method for strengthening an indoor model of a weak sandy soil foundation, belonging to the technical field of foundation test models. Background technique [0002] Soil has high compressive strength and poor tensile strength. Adding a certain amount of reinforcement into the soil can improve the strength and deformation characteristics of the soil to varying degrees. This technology is called reinforced soil technology. After mixing or paving an appropriate amount of reinforcing material in the soil, it can diffuse the stress of the soil, increase the modulus of the soil, transfer the tensile stress, limit the lateral deformation of the soil, and increase the distance between the soil and other materials. The frictional resistance can improve the stability of soil and related structures. The application of reinforced soil has a long history at home and abroad. As far as foreign countries are concerned, in 3000...

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Problems solved by technology

However, at present, the research on the reinforcement mechanism of the reinforcement method, the design principles and methods of the reinforced soil structure, and the reasonable selection of relevant design parameters is not deep enough.

At the same time, affected by site conditions and other factors, the implementation of field tests is complicated, which makes it inconvenient to conduct a large number of field tests. Therefore, the reinforcement theory of reinforcement method lacks the support of indoor model test data

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