BASIC ARCH MODULE FOR A TUNNEL CASING DEVICE, AND TUNNEL CASING DEVICE

摘要

The invention relates to a basic arch module (10) for a tunnel casing device, comprising a beam element (11) having a predetermined length (L) with an upper surface (12) and ends inclined relative to a perpendicular to said upper surface, and two end flanges (13, 14), one at each inclined end, the first end flange (13) including a first coupling means (15), the second end flange (14) including a second coupling means (16) complementary to the first coupling means, the first and second coupling means being arranged so as to define a pivot link. The tunnel casing device includes a series of basic arch modules (10).