| Budget Amount *help |
¥25,220,000 (Direct Cost: ¥19,400,000、Indirect Cost: ¥5,820,000)
Fiscal Year 2011: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2009: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Research Abstract |
By focusing on the changes in the vibration modes of the system, which arises due to knocking-off of component members, application effects of knock-off member as a designed trigger are investigated through loading tests and numerical simulations. Main conclusions are the followings ; 3 types of the knocking-off members, like a cantilever, a beam and a bar/bolt, with the slit processed at adequate part of them, can be used as knock-off members. The knock off loads of them against dynamic and cyclic loading fluctuate rather than those against static and monotonic loading, but the knock off of the designated members can enhance the seismic safety of the viaduct providing a smooth shift of the vibrating modes of the system into the isolated condition.
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