Model test device and test method for high-speed railway subgrade passing through Karez

Abstract

A model test device for a high-speed railway subgrade that passes through Karez. Its main components are: the test box is installed under the beam of the reaction frame, and the front and rear are plexiglass plates; the box is filled with a model filled with tracer particles. soil, and the model soil is equipped with PVC vertical pipes and PVC vertical pipes; the top surface of the model soil is provided with a railway subgrade; Directly above the concrete slab; there are vibrators and displacement meters on the concrete backing plate, three strain gauges are arranged on the model geogrid of the reinforced bar, three earth pressure cells are arranged vertically on the railway embankment, three PVC vertical pipes are arranged A lateral earth pressure cell and two strain gauges; a particle image velocimeter is installed outside the test box. The invention can obtain the mechanical characteristics of the subgrade and the Karez foundation under the load of the train, thereby providing test basis for the reinforcement design and construction of the subgrade and foundation of the high-speed railway passing through the Karez area.

Description

Technical field[0001]The present invention relates to the field of geotechnical engineering, in particular, to a test device and test method through a high-speed railway street base model of Kaneri well.Background technique[0002]The Kandajing is a smart irrigation water supply structure used in the desert area. Its main components are shafts, underground dark channels, and ground. The principle of its construct is: in the horspine snow, looking for water sources, then from the high water source to the low-end in the lower area, from the top, according to the depth of the depth, the depth is gradually shallow, and then through the bottom of the shaft in underground Digging the channel, connects the water source, all shafts and ground, and the ground, and the ground in the upper place, the ground, where the ground is introduced, and the conveyance of the water source is performed by the ground. Camper is mainly distributed in Xinjiang in the country, and there is also a distribution i...

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Problems solved by technology

However, the effect of these reinforcement measures depends only on theoretical calculation and analysis, and its error is large, which cannot reliably guarantee the safety of the high-speed railway embankment and the normal use of Karez wells.

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