Disaster management of structures and infrastructures affected by the anticipated Nankai Trough earthquake for resilience enhancement

2022 Fiscal Year Annual Research Report

• Project/Area Number: 19H00813
• Research Institution: Waseda University
• Principal Investigator: 秋山 充良 早稲田大学, 理工学術院, 教授 (00302191)
• Co-Investigator(Kenkyū-buntansha): 高橋 良和 京都大学, 工学研究科, 教授 (10283623) ; 松崎 裕 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群), システム工学群, 准教授 (10506504) ; 越村 俊一 東北大学, 災害科学国際研究所, 教授 (50360847) ; 佐藤 靖彦 早稲田大学, 理工学術院, 教授 (60261327) ; 本田 利器 東京大学, 大学院新領域創成科学研究科, 教授 (60301248)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 南海トラフ地震 / 災害廃棄物 / フラジリティ評価 / リスク / レジリエンス / 緊急仮設橋 / 急速施工

Outline of Annual Research Achievements

南海トラフ地震に対する防災力・減災力の向上のため，以下の内容に取り組んだ．
(1)　津波による構造物の被害推計では，過去の被災情報から推定された構造物の津波フラジリティ曲線が対象地域に依らず適用されてきた．本研究では，過去の被災情報に加えて全国の自治体の土地利用情報を用いて，地域依存性を考慮した津波フラジリティ曲線をその適用先となる市町村と併せて提示できる手法を提案した．具体的には，土地利用情報を用いた主成分分析・クラスター分析から全国の自治体を地域性の類似度により分類し，グループ毎の被害データの集積から津波フラジリティ曲線を市町村別に算定した．適用例として，東北地方太平洋沖地震の被災データから地域依存性を考慮した津波フラジリティ曲線を同定し，それを用いた構造物被害棟数のリスク算定手順をしている．
(2)　摩擦振子型免震機構は，振子の滑りによる地震時慣性力の低減，および滑り面の傾斜により残留変位の抑制を図る構造である．レベル2地震動に相当する地震力を受けた後でも供用性を確保できるダメージフリー構造となり得る可能性が示されている．本研究では，緊急仮設橋が置かれる余震環境においても，一定の地震力に対する安全性を確保するため，摩擦振子型免震機構の緊急仮設橋への応用を検討した．具体的には，コンクリート製の下側滑り面に加え，ナイロン製の上側滑り面を摩擦振子型免震機構に設け，上下二面で異なる摩擦滑りを実現することで，一面のみを滑らせるときよりも大きな地震エネルギーを吸収できるようにした．さらに，急速施工を実現するため，摩擦振子型免震機構を支える橋脚をアーチ型のコンクリートブロック組積造橋脚とすることにより，滑り面から伝達される水平力に対して弾性応答する構造形態とした．この構造の正負交番載荷実験を実施し，その優れた耐震性能を確認した．

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Tongji大学(中国)
  • Country Name: CHINA
  • Counterpart Institution: Tongji大学
• [Int'l Joint Research] Lehigh大学(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Lehigh大学
• [Journal Article] Structural identification via the inference of the stochastic volatility model conditioned on the time-dependent bridge deflection (2023)
  • Author(s): Jia Siyi、Akiyama Mitsuyoshi、Han Bing、Xie Huibing、Frangopol Dan M.
  • Journal Title: Structural Safety Volume: 100 Pages: 102279～102279
  • DOI: 10.1016/j.strusafe.2022.102279
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Shear behavior of reinforced concrete beams repaired using a hybrid scheme with stainless steel rebars and CFRP sheets (2023)
  • Author(s): Hasan Md Abul、Akiyama Mitsuyoshi、Kojima Keisuke、Izumi Naoki
  • Journal Title: Construction and Building Materials Volume: 363 Pages: 129817～129817
  • DOI: 10.1016/j.conbuildmat.2022.129817
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Probabilistic structural identification and condition assessment of prestressed concrete bridges based on Bayesian inference using deflection measurements (2023)
  • Author(s): Jia Siyi、Akiyama Mitsuyoshi、Han Bing、Frangopol Dan M.
  • Journal Title: Structure and Infrastructure Engineering Volume: N/A Pages: 1～17
  • DOI: 10.1080/15732479.2023.2192508
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Life‐cycle risk assessment of building portfolios subjected to tsunamis under non‐stationary sea‐level rise based on a compound renewal process (2023)
  • Author(s): Alhamid Abdul Kadir、Akiyama Mitsuyoshi、Aoki Koki、Koshimura Shunichi、Frangopol Dan M.
  • Journal Title: Earthquake Engineering & Structural Dynamics Volume: N/A Pages: N/A
  • DOI: 10.1002/eqe.3857
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A novel combined experimental-machine learning approach to estimate the probabilistic capacity of RC beams with spatially correlated rebar corrosion in transverse and longitudinal directions (2023)
  • Author(s): Srivaranun Supasit、Akiyama Mitsuyoshi、Yamada Taiki、Frangopol Dan M.、Xin Jiyu
  • Journal Title: Engineering Structures Volume: 279 Pages: 115588～115588
  • DOI: 10.1016/j.engstruct.2023.115588
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Stochastic renewal process model of time-variant tsunami hazard assessment under nonstationary effects of sea-level rise due to climate change (2022)
  • Author(s): Alhamid Abdul Kadir、Akiyama Mitsuyoshi、Aoki Koki、Koshimura Shunichi、Frangopol Dan M.
  • Journal Title: Structural Safety Volume: 99 Pages: 102263～102263
  • DOI: 10.1016/j.strusafe.2022.102263
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Framework for probabilistic tsunami hazard assessment considering the effects of sea-level rise due to climate change (2022)
  • Author(s): Alhamid Abdul Kadir、Akiyama Mitsuyoshi、Ishibashi Hiroki、Aoki Koki、Koshimura Shunichi、Frangopol Dan M.
  • Journal Title: Structural Safety Volume: 94 Pages: 102152～102152
  • DOI: 10.1016/j.strusafe.2021.102152
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effects of galvanostatic and artificial chloride environment methods on the steel corrosion spatial variability and probabilistic flexural capacity of RC beams (2022)
  • Author(s): Xin Jiyu、Akiyama Mitsuyoshi、Miyazato Shinichi、Frangopol Dan M.、Lim Sopokhem、Xu Zhejun、Li Ao
  • Journal Title: Structure and Infrastructure Engineering Volume: 18 Pages: 1506～1525
  • DOI: 10.1080/15732479.2022.2061016
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Random field-based reliability updating framework for existing RC structures incorporating the effect of spatial steel corrosion distribution (2022)
  • Author(s): Srivaranun Supasit、Akiyama Mitsuyoshi、Masuda Keisuke、Frangopol Dan M.、Maruyama Osamu
  • Journal Title: Structure and Infrastructure Engineering Volume: 18 Pages: 967～982
  • DOI: 10.1080/15732479.2021.1995445
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Multi-objective optimisation of in-service asphalt pavement maintenance schedule considering system reliability estimated via LSTM neural networks (2022)
  • Author(s): Xin Jiyu、Akiyama Mitsuyoshi、Frangopol Dan M.、Zhang Mingyang
  • Journal Title: Structure and Infrastructure Engineering Volume: 18 Pages: 1002～1019
  • DOI: 10.1080/15732479.2022.2038641
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Precast RC Blocks with Connections Composed of Steel Shear Keys and CFRP Sheets for the Superstructure of Temporary Bridges in a Postdisaster Situation (2022)
  • Author(s): Ishibashi Hiroki、Akiyama Mitsuyoshi、Fujiwara Masanori、Uno Yoshiki、Hiromitsu Taro
  • Journal Title: Journal of Bridge Engineering Volume: 27 Pages: 04022061
  • DOI: 10.1061/(ASCE)BE.1943-5592.0001907
  • Peer Reviewed
• [Journal Article] Shaking Table Test of a Friction Sliding System on a Concrete Member with Variable Curvature Fabricated by a Three-dimensional Printer (2022)
  • Author(s): Brito Miguel B.、Akiyama Mitsuyoshi、Seto Tetsuta、Honda Riki、Ishigaki Naomitsu
  • Journal Title: Journal of Earthquake Engineering Volume: 26 Pages: 8332～8358
  • DOI: 10.1080/13632469.2021.1991515
  • Peer Reviewed
• [Journal Article] Investigating the Effects of Climate Change on Structural Actions (2022)
  • Author(s): Orcesi Andre、O’Connor Alan、Diamantidis Dimitris、Sykora Miroslav、Wu Teng、Akiyama Mitsuyoshi、Alhamid Abdul Kadir、Schmidt Franziska、Pregnolato Maria、Li Yue、Salarieh Babak、Salman Abdullahi M.、Bastidas-Arteaga Emilio、Markogiannaki Olga、Schoefs Franck
  • Journal Title: Structural Engineering International Volume: 32 Pages: 563～576
  • DOI: 10.1080/10168664.2022.2098894
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] PROBABILISTIC TSUNAMI HAZARD ANALYSIS USING RADIAL BASIS FUNCTION NETWORK AND QUASI-MONTE CARLO SIMULATION AND ITS APPLICATION TO RISK ESTIMATION OF DISASTER WASTE CAUSED BY THE ANTICIPATED NANKAI TROUGH EARTHQUAKE (2022)
  • Author(s): AOKI Koki、AKIYAMA Mitsuyoshi、ISHIBASHI Hiroki、KOJIMA Takayuki、KOSHIMURA Shunichi
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) Volume: 78 Pages: 1～16
  • DOI: 10.2208/jscejseee.78.1_1
  • Peer Reviewed
• [Journal Article] EFFECT OF DAMAGE TO BRIDGES UNDER SEISMIC AND TSUNAMI HAZARDS ON PROBABILISTIC CONNECTIVITY OF ROAD NETWORK (2022)
  • Author(s): AOKI Koki、FUSE Yuzuki、ISHIBASHI Hiroki、AKIYAMA Mitsuyoshi、KOSHIMURA Shunichi
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) Volume: 78 Pages: I_127～I_137
  • DOI: 10.2208/jscejseee.78.4_I_127
  • Peer Reviewed
• [Presentation] Risk-informed life-cycle maintenance management framework for civil infrastructure under climate change. (2022)
  • Author(s): Frangopol, D.M. and Akiyama, M.
  • Organizer: International Symposium on Emerging Developments and Innovative Applications of Reliability Engineering and Risk Managements (EDIARR2022)
  • Int'l Joint Research / Invited
• [Presentation] Life-cycle perspective on the application of stainless steel and CFRP sheet to reinforced concrete structures in chloride-laden environments (2022)
  • Author(s): Frangopol, D.M. and Akiyama, M.
  • Organizer: Sixth International Workshop on Seawater Seasand oncrete (SSC) Structures Reinforced with FRP Composites
  • Int'l Joint Research / Invited