Lining structure of a horseshoe-shaped shield tunnel

The present invention relates to a lining structure for a shield tunnel horseshoe. The lining forms a ring of the type 7 segment 10, including a first block and a second standard standard block, a first corner and a second corner block blocks, a first block and a second transition block and cap block transition composition. Assembled tube sheet, a second standard block assembly first base, followed by a first and a second corner block assembly on both sides of the corner block, a second standard block, a first and second transition block transition block, and a first standard blocks capped blocks. Circumferential and radial segment is connected by bolts through the hand hole. Advantage of the invention is that, taking into account the mechanical characteristics of the lining structure horseshoe, the horseshoe-shaped shield tunnel segment design of variable cross-section, full use of the space and material strength; segment edge portion made of a trapezoidal design, to improve its ability to withstand shear forces; monocyclic less tube sheet number and form; radial position of the hand hole satisfy certain geometric relationship, so that a segment can meet the requirements Staggered assembly.