Loading device and loading method of geotechnical engineering model test

Abstract

The invention provides a loading device and a loading method of geotechnical engineering model test. The loading device comprises a static loading mechanism, the static loading mechanism comprises a ground anchor, two reaction frame stand columns, two force sensors, a reaction frame crossbeam, two loading bolts, a reaction plate, at least two loading springs and a pressure bearing plate; the two reaction frame stand columns are fixed on the ground anchor through adopting stand column anchor bolts; the two force sensors are respectively connected to the middle segments of the reaction frame stand columns; the reaction frame crossbeam crosses over the two reaction frame stand columns and is blocked from top to bottom by adopting loading bolts; and the reaction plate is arranged below the reaction frame crossbeam and is fixedly connected with the pressure bearing plate through the loading springs, the device can also comprise a dynamic loading mechanism, and the dynamic loading mechanism comprises a header plate, header plate fixing bolt rods and an actuator. The device and the method can realize the static creep deformation test of a geotechnical engineering model, or the coupling loading of the static creep deformation test and dynamic fatigue test.

Description

[0001] 【Technical field】 [0002] The invention relates to a geotechnical engineering indoor model test technology, in particular to a loading device and a loading method for a geotechnical engineering model test. [0003] 【Background technique】 [0004] Rock soil and underground structures are often subjected to static loads and dynamic loads at the same time. For example, the railway subgrade bears static loads such as the track and its soil weight and the dynamic load transmitted by the high-speed train through the track. Long-term static loads cause rheological deformation of rock and soil, while intermittent dynamic loads cause dynamic cumulative deformation of rock and soil. Fully understanding the rheological and dynamic deformation characteristics of rock and soil materials is the key to ensuring engineering safety and stability. important prerequisite. Therefore, it is of great practical significance to study the physical mechanics and deformation characteristics of r...

AI Technical Summary

Problems solved by technology

Because the rheological time of rock and soil is long, especially the rheological time of soft soil is as long as several years, in order to simulate the long-term load on the soil, the loading time of indoor model test is often longer, but the above-mentioned equipment is generally used Only short-term static and dynamic coupling loading can be carried out, such as long-term dynamic and static coupling loading, the loading cost is very high, which makes it difficult to simulate the long-term deformation and mechanical properties of rock and soil indoors

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