Physical model testing device for simulating tunnel excavation and method thereof

Abstract

The invention discloses a physical model testing device for simulating tunnel excavation and a method thereof, the physical model testing device comprises an arch frame, a main shaft tube, capsule bodies and strain gauges; wherein the main shaft tube is placed in an inner region of the arch frame, the inner region of the arch frame is separated into at least two parts by the main shaft tube, one part is a curved area which is on the upper side of a main shaft and is enclosed by the curved vault of the arch frame, and the other part is a square area which is on the lower side of the main shaftand enclosed by support walls at the two ends of the curved vault; the capsule bodies have two shapes, namely a curved capsule and a square capsule; the curved capsule is placed in the curved area, and the square capsule is placed in the square region; Each of the capsule bodies has an inlet hole and an outlet hole, and the inlet hole and the outlet hole of each of the capsule bodies are respectively equipped with a drainage tube; the outer side of the arch frame has the plurality of strain gauges for detecting the deformation of the arch frame; the physical model testing device can simulate indoor tunnel excavation, and provides a powerful testing tool for indoor model tests of geotechnical engineering.

Description

technical field [0001] The invention relates to a physical model test device for simulating tunnel excavation, belonging to a physical model test device capable of truly simulating structural internal force changes and soil deformation during tunnel excavation in the field of geotechnical engineering. Background technique [0002] With the rapid development of our country's economy, our country's highways, buildings and water conservancy constructions are also booming. The foundation pit project needs to be paid attention to by all projects, because the instability of the support structure often brings disastrous consequences to the construction. . 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. gui...

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of this invention is to design a device that can truly simulate the tunnel excavation process in view of the large disturbance in the existing tunnel excavation simulation and the inability to divide the section and divide the excavation simulation into steps.

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