| 摘要 |
PROBLEM TO BE SOLVED: To apply earthquake resisting reinforcement not only to a ground section of a lower structure but also to an underground section. SOLUTION: In this earthquake-resisting reinforcing structure 1 of a viaduct, a steel sheet pile 13 is buried in a box shape in the ground 14 along a peripheral edge of a rectangular planar space which is surrounded by foundation beams 6 and 6 and orthogonal foundation beams 7 and 7, and a reinforced concrete floor slab 62 is constructed in the rectangular planar space in such a manner that heads of the steel sheet piles are joined. The steel sheet pile 13 and the reinforced concrete floor slab 62 form a foundation structure 63 as a second foundation structure which is newly added in earthquake-resisting reinforcing work. A three-dimensional damper brace 71 is arranged immediately above the rectangular planar space, so as to transfer a compressive force and a tensile force, associated with a horizontal force during earthquakes and rocking vibrations from a rigid frame 4, to the foundation structure 63. COPYRIGHT: (C)2008,JPO&INPIT
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