Extended Finite Layer Method for Semi-space Ground Analysis

Tian, Guanfeng; Tang, Liansheng

doi:10.1007/s10706-016-0141-4

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…Under such circumstances, the theoretical analysis of surface settlement may be solved successfully if an analysis method can simulate the real properties of composite stratum, and then it is possible to work out the me-chanical characteristics of the stratigraphic space during shield tunneling. Usually, the finite layer method is used to settle the mechanical analysis of uneven ground [31,32]. Therefore, the finite layer model is applied to simulate the composite stratum, and the finite layer method is used to find out the relationship be-tween the effective thrust and surface settlement when shield tunneling.…”

Section: Model Of Tunnel Composite Stratummentioning

confidence: 99%

Analysis of instantaneous surface settlement of tunnel construction in composite stratum based on semi-analytical method

Tian¹,

Wu²,

Yu³

2023

AETR

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It is important for shield tunneling safety to predict and control the instantaneous surface settlement. Particularly, the complex geological condition can make accurate prediction more difficult. To adapt to the stratum distribution, a semi-analytical method is established by introducing the finite layer method into tunnel mechanical analysis. Firstly, based on the elastic solution of the finite layer method, the horizontal flexibility coefficient of tunneling and the surface settlement are obtained by applying effective thrust to the excavation face. Secondly, two influencing factors are analyzed, including the penetration of shield tunneling and the Poisson ratio of geotechnical parameter. The relationship formula between the measured value and the theoretical value of the maximum settlement is derived through data fitting. Finally, the settlement prediction method of tunneling is proved to be practical, which provide a new ideal for the mechanical analysis of tunnels in composite strata.

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Section: Model Of Tunnel Composite Stratummentioning

confidence: 99%