| 摘要 |
PROBLEM TO BE SOLVED: To provide a tunnel lining structure attaining cost reduction and shortening of a construction period. SOLUTION: This tunnel lining structure is provided with a lining slab 1 of portal cross section formed by lining up a plurality of lining elements 2 in the outer peripheral direction of excavated cross section and pressing them into the natural ground. A pair of lining elements 21 positioned at the right and left feet of the lining slab 1 respectively have extended parts 21a with both ends extended on the front side and rear side from the lining slab, and the extended parts 21a are respectively supported by struts 3. The pair of lining elements 21 are jointed to the strut 3. Further, the pair of lining elements 21 have functions and bearing force for reducing flexure and supporting earth pressure applied to the lining elements at a side face part. COPYRIGHT: (C)2004,JPO&NCIPI
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