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| ¡¡ Finite Element Analysis for Influence of
Shield Tunneling on Settlement of Ground Surface in Loess Strata Abstract£ºAccording to the mechanical characteristics of loess soils£¬the Duncanª²Chang
nonª²linear elastic constitutive model was adopted£®Considering the effect of excavation
of shield tunneling on adjacent buildings£¬a finite element model on the interactions
between soil and lining was established£® The law of the influence of shield tunneling on
settlement of ground surface in loess strata was discussed£¬and the results indicate that
the settlement of ground surface reduces nearª²linearly with the increasing depth of
tunnel in the same outer diameter of shield tunneling£»the settlement of ground surface
increases nearª²linearly with the increasing outer diameter of shield tunneling in the
same depth of tunnel£»and no matter what size the outer diameter of shield tunneling is£¬the
settlements of ground surface above the tunnel and the adjacent buildings reduce with the
increasing ratio of the horizontal distance between the shield tunneling and the building
to the outer diameter of shield tunneling£¬and also reduce when the depth of tunnel
increases£® This research offers a theoretical reference to the construction of metro
engineering in west China£® ¡¡ |
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