Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Theoretical Analysis on Underlying Tunnel Heave during a New Pit Construction
The heave of underlying tunnel is considered as one of most important criterion to evaluate the stability and deformation of the new pit construction. Based on the superposition principle of corner point method and Boussinesq solution, the formulas of unloading stress at any depth below the pit are presented, in which the pit bottom plane is taken as the reference surface. The bending deformation of the tunnel and the rebound deformation of soil surrounding the tunnel are considered in these formulas. By combining the layer-rise summation method and Winkler's elastic foundation beam theory, the analytical solution is established to predict the tunnel heave. In addition, the formula modified by the time-space effect coefficient is applied to an engineering practice, and the results show that the modified fomrmula is reliable.
Theoretical Analysis on Underlying Tunnel Heave during a New Pit Construction
The heave of underlying tunnel is considered as one of most important criterion to evaluate the stability and deformation of the new pit construction. Based on the superposition principle of corner point method and Boussinesq solution, the formulas of unloading stress at any depth below the pit are presented, in which the pit bottom plane is taken as the reference surface. The bending deformation of the tunnel and the rebound deformation of soil surrounding the tunnel are considered in these formulas. By combining the layer-rise summation method and Winkler's elastic foundation beam theory, the analytical solution is established to predict the tunnel heave. In addition, the formula modified by the time-space effect coefficient is applied to an engineering practice, and the results show that the modified fomrmula is reliable.
Theoretical Analysis on Underlying Tunnel Heave during a New Pit Construction
Li, Ping (Autor:in) / Yu, Tao (Autor:in) / Liu, Hanlong (Autor:in) / Zhou, Xingde (Autor:in)
Sixth Congress on Forensic Engineering ; 2012 ; San Francisco, California, United States
Forensic Engineering 2012 ; 651-660
13.11.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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