Integrated working condition simulation device and test method for centrifugal model test of highway culvert

Abstract

The invention discloses an integrated working condition simulation device of a highway culvert centrifugal model test and a test method. The device comprises a bottom plate, a height fixing frame, a pair of telescopic plates, a foundation model, a test soil sample, a counterweight device and a culvert model; the bottom plate is flatly spread on the bottom surface of a centrifugal model box; the height fixing frame is installed on the bottom plate; the foundation model is placed on the bottom plate; the culvert model is placed on the foundation model; the telescopic plate are symmetrically installed on the bottom plate at both sides of the foundation model; the telescopic plates are arranged obliquely; a hollow cavity enclosed by the centrifugal model box, the bottom plate, the pair of telescopic plates, the foundation model and the culvert model is filled with the test soil sample; the counterweight device is spread on the test soil sample. The test device is simple in structure, convenient to operate, free of frequency disassembly and assembly, and capable of efficiently and accurately satisfying the requirements of designing the highway culvert centrifugal model test and improving the test efficiency and precision.

Description

technical field [0001] The invention relates to a geotechnical test device, in particular to an integrated working condition simulation device and a test method for a highway culvert centrifugal model test. Background technique [0002] At present, the geotechnical centrifugal test of highway high-fill culverts in our country is in the rising stage, and the experience accumulation of test design is not rich enough. However, in the existing geotechnical centrifugal tests of highway culverts, it is often necessary to specially produce different sizes, different slopes and different valley bottom widths. The valley terrain model is extremely inconvenient to operate, and the cost is extremely high. [0003] At the same time, the terrain model of high subgrade culverts often exceeds the net height of the centrifuge model box, and the test cannot be carried out due to the size limitation of the centrifuge model box. Therefore, traditional model devices can only simulate roadbed t...

AI Technical Summary

Problems solved by technology

[0002] At present, the geotechnical centrifugal test of highway high fill culverts in our country is in the rising stage, and the experience accumulation of test design is not rich enough. However, in the existing geotechnical centrifugal tests of highway culverts, it is often necessary to specially produce different sizes, different slopes and different valley bottom widths. The terrain model of the ravine is extremely inconvenient to operate and the cost is extremely high

[0003] At the same time, the terrain model of high subgrade culverts often exceeds the net height of the centrifuge model box, and due to the limitation of the size of the centrifuge model box, the test is often impossible

Therefore, the traditional model device can only simulate the embankment terrain with a limited height

[0004] Finally, in the traditional test model, the soil sample is not well fixed

During the centrifuge test, the instability of the soil sample often leads to the instability of the test results

Images