Simulation device and simulation method for shield tunnel segment deformation and ground surface settlement

Abstract

The invention discloses a simulation device and a simulation method for shield tunnel segment deformation and ground surface settlement. Comprising a stabilizing frame, a shell assembly arranged on the stabilizing frame, a limiter arranged in the shell assembly and used for limiting shield tunnel segments in the X direction and the Y direction, and a stratum simulation assembly located below the shield tunnel segments and used for simulating a stratum structure. Effective prevention and control of displacement of shield tunnel segments on the horizontal plane are achieved through the limiting stoppers of the telescopic structures, multi-layer stratum springs capable of being freely detached at the bottom are utilized, and settlement deformation of multiple positions of a tunnel is monitored through high-precision displacement sensors on the upper portion. After the shield tunnel segments are assembled, the positions of the shield tunnel segments are fixed through cooperation of the limiting stoppers of the telescopic structures and the shell assembly, simulation tests of multiple types of stratums are achieved, and the device can be suitable for different tunnel model diameters and different composite stratums.

Description

technical field [0001] The invention relates to the technical field of tunnel construction geological environment environment, in particular to a simulation device and simulation method for shield tunnel segment deformation and surface settlement. Background technique [0002] At present, due to the obvious advantages of shield tunnels in terms of driving speed, ground traffic disturbance and construction safety, a large number of shield tunnels are used in urban subway tunnels. More and more complex, the tunnel not only has to pass through the area of ​​a large number of urban buildings, but also faces the excavation of the foundation pit on the surface. In addition, there will also be discontinuities in the soft and hard strata. These problems will not only lead to uneven settlement of the surface, It will also affect the operation of above-ground buildings and underground section tunnels. [0003] Existing scholars' researches on surface subsidence induced by tunnel exca...

AI Technical Summary

Problems solved by technology

When using the obtained theoretical or empirical formulas, the results obtained have a large error with the engineering results. Therefore, it is urgent to provide a device for simulating the deformation of the annulus joints of shield tunnel segments with different layers on the surface and the settlement of the surface, which is convenient and effective. Measuring Model Deformation and Settlement

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