In this study, accuracy of evaluation methods of site amplification factors [SAF] without in-situ earthquake observations was verified based on 27 sites all over Japan. There are 3 methods without in-situ earthquake observations for port and harbor facilities. One is the method based on microtremor measurements [Method1], the second is the improved method of the Method1, which is applied in a case that peak amplitude of microtremor horizontal to vertical spectral ratio [HVSR] of two sites ((1) site where the facility is being constructed, (2) site of nearby strong motion station) are more than about twice as much or more [Method1’], and the third is the method based on empirical relation between SAF at a port and nearby strong motion station [Method2]. On the other hand, there is the evaluation method of SAF based on in-situ earthquake observations [Method0] as an especially reliable method. We verified the 3 methods (Method1, Method1’, Method2) using the sum of squared errors from Method0 [SSE], SSE weighted by SAF evaluated by the method0 [Weighted SSE], distance between the peak frequencies of the two SAF [Δf] and distance between the peak heights of the two SAF [ΔPeak_SAF]. Furthermore, we verified the impact on structural design of port and harbor facilities using velocity power spectrum intensity [PSI] as an indicator. As a result, Method1 performed the best based on the comparison based on SSE, Δf andΔPeak_SAF. However, it was revealed that there are some cases that the SAF evaluated by the Method1 deviate from the SAF evaluated by the Method0. Therefore, we described probable factors of the deviations and some notes for structural design in this paper.
"},{"@language":"ja","@value":"港湾で用いられている地震観測に依らないサイト増幅特性[SAF]の評価法としては，常時微動観測に基づき対象施設設置地点のピーク周波数を考慮できる評価法[手法1]，手法1に加えて冪関数でピーク高さも補正する評価法[手法1’]，港湾と周辺の強震観測点のSAFの経験的関係を利用する評価法[手法2]がある．本研究では，全国27地点を対象に，それらの評価法で評価されたSAFと，対象地点と周辺の強震観測点での同一地震の観測に基づく評価法[手法0]で評価されたSAFの乖離を，港湾構造物への影響の大きい0.2~2.0Hzを対象に，SAFの差の二乗の和[SSE]等の指標で評価した．SSEでの評価の結果，手法1が最も手法0に近い結果を与えることを示した．一方，手法1，1’では，手法0で評価されたSAFを良く再現できない場合があることが分かり，その要因と実務設計での留意点を示した．
"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410302016255867138","@type":"Researcher","foaf:name":[{"@language":"en","@value":"SUGAHARA Noriki"},{"@language":"ja","@value":"菅原 法城"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"港湾空港技術研究所 インフラDX研究領域"}]},{"@id":"https://cir.nii.ac.jp/crid/1410302016255867139","@type":"Researcher","foaf:name":[{"@language":"en","@value":"TAKENOBU Masahiro"},{"@language":"ja","@value":"竹信 正寛"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"国土技術政策総合研究所 港湾・沿岸海洋研究部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410302016255867136","@type":"Researcher","foaf:name":[{"@language":"en","@value":"NOZU Atsushi"},{"@language":"ja","@value":"野津 厚"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"港湾空港技術研究所 地震防災研究領域"}]},{"@id":"https://cir.nii.ac.jp/crid/1410302016255867137","@type":"Researcher","foaf:name":[{"@language":"en","@value":"YAMADA Masayuki"},{"@language":"ja","@value":"山田 雅行"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"ニュージェック"}]},{"@id":"https://cir.nii.ac.jp/crid/1410302016255867140","@type":"Researcher","foaf:name":[{"@language":"en","@value":"NAGASAKA Yosuke"},{"@language":"ja","@value":"長坂 陽介"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"港湾空港技術研究所 地震防災研究領域"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"24366021"}],"prism:publicationName":[{"@language":"en","@value":"Japanese Journal of JSCE"},{"@language":"ja","@value":"土木学会論文集"},{"@language":"en","@value":"Japanese Journal of JSCE"},{"@language":"ja","@value":"土木学会論文集"}],"dc:publisher":[{"@language":"en","@value":"Japan Society of Civil Engineers"},{"@language":"ja","@value":"公益社団法人 土木学会"}],"prism:publicationDate":"2024","prism:volume":"80","prism:number":"18","prism:startingPage":"n/a"},"reviewed":"false","url":[{"@id":"https://www.jstage.jst.go.jp/article/jscejj/80/18/80_24-18065/_pdf"}],"availableAt":"2024","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=port%20and%20harbor%20facilities","dc:title":"port and harbor facilities"},{"@id":"https://cir.nii.ac.jp/all?q=site%20amplification%20factors","dc:title":"site amplification factors"},{"@id":"https://cir.nii.ac.jp/all?q=design%20earthquake%20ground%20motions","dc:title":"design earthquake ground motions"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390282679587116288","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Strain space plasticity model for cyclic mobility."}]},{"@id":"https://cir.nii.ac.jp/crid/2050870367075037952","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"MOWLAS : NIED observation network for earthquake, tsunami and volcano"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2013426305"},{"@type":"CROSSREF","@value":"10.2208/jscejj.24-18065"}]}