Transverse Force Analysis of Adjacent Shield Tunnel Caused by Foundation Pit Excavation Considering Deformation of Retaining Structures
نویسندگان
چکیده
In order to research the theory for variety of transverse forces adjacent shield tunnels caused by foundation pits excavation, effect mechanism pit excavation on tunnel was analyzed. The sidewall unloading model pit, considering deformation retaining structures, introduced calculate additional stress soil excavation. On this basis, confining pressure variation established, influence longitudinal deformation. Take deep project side Hangzhou Metro Line 2 as a case study, in distribution analyzed, and simplified finite element established internal force segment ring structure. Moreover, factors were such structure, clearance between tunnel, buried depth tunnel. present study suggests that reduces increases absolute value bending moment shear force, decreases axial at top bottom tunnel’s ring. With increase pit’s increases, response is more obvious than pressure. When deeper will be obviously weakened. decrease distance enhanced.
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ژورنال
عنوان ژورنال: Symmetry
سال: 2021
ISSN: ['0865-4824', '2226-1877']
DOI: https://doi.org/10.3390/sym13081478