Predicting damage index of wooden structures using fatigue response spectral intensityindex considering the construction age and number of seismic response cycles
アイテムタイプ
学術雑誌論文 / Journal Article
言語
日本語
キーワード
Fatigue response spectral intensity, Structural response analysis, Prediction of wooden structuraldamage in Kanazawa City
Proceedings of the JSCE Earthquake Engineering Symposium
巻
29
ページ
10 - 19
発行年
2007
ISSN
1880-4624
1884-846X
NCID
AA12305816
DOI
10.11532/proee2005a.29.10
出版者
土木学会 Japan Society of Civil Engineers
抄録
一般に地震動の破壊力を示す指標として, 計測震度等が用いられている。しかし, これらの指標は地震動により構造物が何回揺らされ, 疲労がどのくらい蓄積されたかという地震動の繰り返しによる影響を十分に考慮していない。特に2004年新潟県中越地震では本震後の余震によって木造構造物の破壊が拡大した。そこで, 本研究では建築年代別構成を考慮した疲労応答スペクトル強度指標 (FSI) を適用し, 被害との関係について考察するとともに, 森本・富樫断層が震源となる地震動による金沢市の木造構造物被害予測を行い, 震源パラメータの違いによる被害程度を考察する。その結果, 建築年代別構成を考慮した疲労応答スペクトル指標の有効性を示すことができた。
In general, seismic intensity, peak ground acceleration (PGA), peak ground velocity (PGV) and spectral intensity (SI) have been usedasthe indices of destructive poweron earthquake motion. However, it is quite important to consider the number of earthquake response cycles in the vicinityof the maximum response andnatural period of structures for predicting damage to structures. Especially, destruction of thewooden structure was expanded byaftershock after the main shock in 2004 Niigata-ken Chuetsu earthquake. In this study, the influence byaccumulation of the earthquakemotion on wooden structure destruction is considered. The fatigueresponse spectral intensity (FSI) of havingtaken the repetition of earthquake motion into consideration is applied, and a relation with wooden structure damage is considered. Inaddition, existing probability of natural period of wooden houses is taking into account in this index. In this study, It is predicted to thewooden structure damage using the FSI indexin Kanazawa City. As a result, it was clarified that accumulation of an earthquakemotioninfluences structure damage and the earthquake motion destructive power index proposed by this research that accumulation of the earthquake motion can be taken into consideration is effective.