| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a structure with high structural reliability, which can stably exert desired strength of a joint portion, by employing an inexpensive and simple constitution. Ž<P>SOLUTION: This steel segment 1 filled with concrete is constituted by infilling concrete 41 into a steel shell 10 which comprises a pair of main plate girders 11, a pair of joint plates 13 and a skin plate. A plurality of longitudinal ribs 31 are arranged almost in parallel with the axial direction of a tunnel in the steel shell 10. A load transfer member 33 is arranged almost in parallel with the circumferential direction of the tunnel in the concrete 41. The one end side 33a of the load transfer member 33 is anchored to the longitudinal rib 31A adjacent to the joint plate 13. A connecting member 35 is arranged between the joint plate 13 and the longitudinal rib 31A. One end 35a of the connecting member 35 is fixed to the joint plate 13, and the other end 35b thereof is fixed to the longitudinal rib 31A. A tensile load and the like acting on the joint portion 23 of the joint plate 13 are surely transferred to the longitudinal rib 31A and the load transfer member 33 via the connecting member 35. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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