A physical test model box capable of three-dimensional loading and its application method

Abstract

A three-dimensional loading physical test model box includes steel frames, universal wheel mounting holes, organic glass plates, micro stress sensors, fasteners, hooks, steel rods, threads, nuts, fastener holes, universal wheels and universal wheel grooves. The steel frames are formed by welding profile steel, the side surfaces of the steel frames are provided with the universal wheel mounting holes, the fastener holes, the universal wheel grooves, the universal wheels and the fasteners, the organic glass plates are arranged at the inner sides of the steel frames, and the micro stress sensorsare embedded in the inner sides of the organic glass plates, and can measure the true stress condition of a model in the loading process. The four steel frames are spliced in an offset manner to formthe model box, one ends, with the threads, of the fasteners go through the steel frame fastener holes and are fixed by the nuts to fix the two steel frames, and one ends, with the hooks, of the fasteners are directly hooked on the steel frames. The universal wheels are arranged at the bottom of every steel frame, and the universal wheel grooves can stop a simulated material at pulleys in the loading process to prevent overflow. The physical test model has the characteristics of true three-dimensional loading, convenience, simplicity, and provision of a powerful testing tool for indoor model test of geotechnical engineering.

Description

technical field [0001] The invention relates to the field of geotechnical engineering physical experiment devices, in particular to a three-dimensional loading physical test model box and a method for using the same. Background technique [0002] With the rapid development of my country's economy, my country's highway, construction and water conservancy constructions are also booming. The construction of the project is inseparable from the indoor test, especially the indoor model test can simulate the stress and deformation during the construction and use of the project by reducing the scale of the components, which is very important for the stability and applicability of the project after it is completed. guiding significance. However, the current equipment that can realize real ground stress is the centrifuge model test. Although the centrifuge test has certain advantages, the disadvantages are also obvious. First, the model construction cannot be too large, and second, t...

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Problems solved by technology

However, the current equipment that can realize real ground stress is the centrifuge model test. Although the centrifuge test has certain advantages, the disadvantages are also obvious. First, the model construction cannot be too large, and second, the cost is high. A test usually requires tens of thousands of dollars. Yuan or even hundreds of thousands of yuan, very uneconomical

Other model boxes in China can only be loaded vertically, so the stress field generated in this way is very different from the actual stress field of the component, and the test results obtained are quite different from the actual project. This is obviously important for engineering construction. very unfavorable

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