Dynamic simulation test system for piled anchor support slope under earthquake action

Abstract

The invention relates to a dynamic simulation test system for a piled anchor support slope under the earthquake action. The system comprises a slope elastic silica gel model which comprises a slidingbody, a sliding bed, and a preset arc-shaped sliding surface, a piled anchor supporting structure which is implanted into a slope model and comprises a rectangular hollow aluminum pipe used for simulating an anti-slide pile, and a steel strand used for simulating an anchor cable, and a laser displacement sensor bracket which can move back and forth and up and down. Compared with the prior art, what can be guaranteed is that the landslide is in the same initial state before each test, repeated tests are guaranteed, meanwhile, horizontal displacement of all components in the slope sliding process can be measured in a multi-dimensional mode, and the method has the advantages of being high in simulation capacity, easy and convenient to use, low in economic cost and the like.

Description

technical field [0001] The invention relates to the field of engineering geology, in particular to a dynamic simulation test system for slopes supported by piles and anchors under earthquake action. Background technique [0002] my country has many mountains and complex geological conditions. In recent years, the frequency of landslides has intensified, and China has become one of the countries that suffer the most serious landslide geological disasters in the world. In order to mitigate landslide disasters, unstable landslides should be treated. As a new form of reinforcement, the pile-anchor structure has the advantages of both anti-slide piles and anchor cables. It has a more reasonable stress distribution than ordinary anti-slide piles, and overcomes the structure of a single anti-slide pile or anchor cable in major landslide control. The form will face problems such as excessive pile body bending moment, poor anchorage ground, and insufficient treatment range, which gr...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of research on the dynamic response of the landslide-pile-anchor system, and the mechanism of the pile-anchor slope support system under seismic loads urgently needs further systematic research.

[0003] At present, the dynamic model tests mainly include large-scale shaking table tests and dynamic centrifuge tests, and the pile and anchor support are mostly studied separately. Few scholars have carried out the dynamic model test of pile-anchor combination reinforcement for slopes.

At the same time, when simulating the slope test under earthquake action, the traditional method is to use the original site rock and soil, but when the ground motion is large or the number of earthquake vibrations is large, the soil will be strongly disturbed and softened, and the slope will be damaged when the test is repeated. The model must be remade, and repeated sampling cannot ensure that the slope is in the same initial state every time, which will cause errors in the study of the dynamic response of the support structure. At present, there is still a lack of a complete test system for pile-anchor support slopes

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