2011 Fiscal Year Final Research Report
DYNAMIC RESPONSE PROPERTIES OF EXCEPTIONAL STRONG GROUND MOTIONS HAVING HIGH PGA AND RESPONSE LOSSES OF BUILDING STRUCTURES
| Project/Area Number |
21360263
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KUBO Tetsuo 東京大学, 大学院・工学系研究科, 教授 (80111467)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 建築構造・材料 / 構造工学・地震工学 / 耐震構造 / 強震地震動 / 高加速度 / 耐震設計 / 地震応答 / 鉄筋コンクリート構造 |
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| Research Abstract |
Herein the study, first we examine the dynamic response properties of the so-named exceptional strong ground motions having high peak ground accelerations(PGAs), using a set of recorded motions, the PGAs of which fall in the range greater than or equal to 0. 5 in G. Secondly we evaluate response losses of a building structural system when the time differences of input excitation are included among the multi-supporting foundations of the system. We have reached the conclusive remarks that the so-named exceptional strong ground motions with high PGAs will generally have dominant periods of motion in short period ranges, and that the greater the time differences of input excitation for the system are taken, the lesser the responses of structural system are yielded when compared to those with uniform input excitation.
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