Full-Scale Model Test of Subway Contact Channel under Mechanical Construction

The mechanical construction method for a subway contact channel has the advantages of short period and high safety, is more being applied in coastal soft-soil areas. In order to explore suitability this inland areas, full-scale model test platform used simulate shield-cutting process channel. convergence deformation segments strain reinforcement concrete are tested, so as analyze internal force law tunnel structure during cutting construction. influence steel ring on also studied. It found that segment at top less than waist position, 30 mm; redistributes axial mainly decreases process; stress state may change from compression tension. main tunnel, supporting stiffness steel-ring-lined composite pipe have little research results provide corresponding technical indexes by method, well reference design optimization segment.