Masaru Kitahara 研究室

主宰者：Masaru Kitahara

東京大学

AI 要約（直近 5 年の研究成果）

本研究室では、構造物の安全性と耐久性を保証するための計測データ駆動型の解析手法の開発に取り組んでいます。既存の橋梁やその他の土木構造物は、地震や経年劣化によって内部損傷を被ります。これらの損傷を検知し、残存性能を正確に評価することが、構造物の適切な維持管理に不可欠です。本研究室は、振動計測や画像解析から得られるデータを用いて、数値モデルのパラメータを逐次的に更新し、構造物の現況を把握する方法を研究しています。技術的には、ベイズ統計学に基づくモデル更新手法、統計的学習法、そして効率的な数値解析アルゴリズムを組み合わせたアプローチを採用しています。計測ノイズや材料特性のばらつきといった不確定要因を確率的に定量化し、その影響を地震応答や構造性能の評価に反映させることが特徴です。また、有限要素法と3次元画像処理、機械学習モデルを融合させ、損傷領域の検出や橋梁設計案の自動生成といった応用も展開しています。これらの研究を通じて、観測に基づく信頼性の高い性能評価と、それに基づいた合理的な補修・更新判断を支援する技術基盤の構築を目指しています。

※ AI（Claude）が、公開されている論文要旨から研究の問い・手法・主要な発見を事実情報として抽出・再構成して自動生成しています。誤りを含む可能性があるため、正確性は研究室公式情報でご確認ください。

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研究成果（35 件）

[2026] VARIATIONAL IDENTIFICATION OF NONLINEAR DYNAMICS FOR SEISMIC RESPONSE ESTIMATION
DOI: https://doi.org/10.2208/jscejj.25-15008
[2026] UNCERTAINTY PROPAGATION ON SEISMIC RESPONSES OF A BRIDGE PIER USING BAYESIAN ACTIVE LEARNING
DOI: https://doi.org/10.2208/jscejj.25-15007
[2026] CONCEPTUAL DESIGN METHOD FOR BRIDGES COMBINING TOPOLOGY OPTIMIZATION AND DEEP GENERATIVE MODEL
DOI: https://doi.org/10.2208/jscejj.25-15003
[2026] 損傷部の点群データと一般部の寸法情報を用いる統合型のFEモデル構築
[2026] Finite element modeling and updating of historic timber structural components using 3D photogrammetry and ultrasound-based computed tomography
DOI: https://doi.org/10.1016/j.iintel.2026.100227
[2025] Active Learning–Based Estimation of Extreme Roll Motion in Beam Seas with Supervised Dimensionality Reduction and Gradient Approximation
DOI: https://doi.org/10.1061/ajrua6.rueng-1756
[2025] Uncertainty-Aware Efficient Estimation of the Probability Density Function for Excessive Rolling of a Ship
DOI: https://doi.org/10.1061/ajrua6.rueng-1626
[2025] Time-variant reliability analysis using stratified Beta-sphere sampling and active learning
DOI: https://doi.org/10.1016/j.ress.2025.111295
[2025] Latent space-based stochastic model updating
DOI: https://doi.org/10.1016/j.ymssp.2025.112841
[2025] A theoretically-consistent parallel enrichment strategy for Bayesian active learning reliability analysis
DOI: https://doi.org/10.1016/j.cma.2025.117752

続きを表示（残り 25 件）

[2025] Sequential and adaptive probabilistic integration for structural reliability analysis
DOI: https://doi.org/10.1016/j.strusafe.2025.102577
[2025] Efficient Augmented Extended Kalman Filter Using Adaptive Strategy with Spectral Transition for Rapid Post-Earthquake Displacement Estimation
DOI: https://doi.org/10.2749/tokyo.2025.0499
[2025] BAYESIAN MODEL UPDATING OF EXISTING SEISMICALLY ISOLATED BRIDGES USING SEISMIC RESPONCES AT MULTIPLE LOCATIONS
DOI: https://doi.org/10.2208/jscejj.24-15022
[2025] Latent Space-Based Bayesian Approach to the NASA and DNV Challenge 2025
DOI: https://doi.org/10.3850/978-981-94-3281-3_esrel-sra-e2025-p8724-cd
[2025] Sequential active learning for estimating small failure probabilities in high-dimensional problems: Application to nonlinear vessel responses
DOI: https://doi.org/10.1016/j.strusafe.2025.102686
[2024] HIERARCHICAL BAYESIAN MODEL UPDATING AND MODEL SELECTION FOR QUANTIFYING UNCERTAINTIES IN DEPENDENT PARAMETERS
DOI: https://doi.org/10.2208/jscejj.23-15008
[2024] Sequential and adaptive probabilistic integration for Bayesian model updating
DOI: https://doi.org/10.1016/j.ymssp.2024.111825
[2024] Track Geometry Estimation and Hanging Sleeper Detection Using Vehicle Dynamic Responses with Unknown System Parameters
DOI: https://doi.org/10.1061/ajrua6.rueng-1259
[2024] TRACK PROFILE ESTIMATION USING A HALF CAR MODEL AND UNSUPPORTED SLEEPER DETECTION CONSIDERING THE DIFFERENCE IN TRAIN VEHICLE WEIGHTS
DOI: https://doi.org/10.2208/jscejj.23-15012
[2024] Probabilistic calibration of model parameters with approximate Bayesian quadrature and active machine learning
DOI: https://doi.org/10.1088/3050-2454/ad9f62
[2024] Extreme nonlinear ship response estimations by active learning reliability method and dimensionality reduction for ocean wave
DOI: https://doi.org/10.1016/j.marstruc.2024.103723
[2023] HIERARCHICAL BAYESIAN MODEL UPDATING FOR QUANTIFYING UNCERTAINTIES IN MODEL PARAMETERS
DOI: https://doi.org/10.2208/jscejj.22-15005
[2023] Stochastic Model Updating and Model Class Selection for Quantification of Different Types of Uncertainties
DOI: https://doi.org/10.3850/978-981-18-8071-1_p245-cd
[2023] Adaptive Bayesian filter with data-driven sparse state space model for seismic response estimation
DOI: https://doi.org/10.1016/j.ymssp.2023.111048
[2022] Measurement Uncertainty in Structural Health Monitoring Systems Under Temperature Influence
DOI: https://doi.org/10.2139/ssrn.4253412
[2022] Classification of power spectra from data sets with high spectral variance for reliability, analysis of dynamic structures
DOI: https://doi.org/10.3850/978-981-18-5184-1_ms-11-160-cd
[2022] Data-driven reliability assessment of dynamic structures based on power spectrum classification
DOI: https://doi.org/10.1016/j.engstruct.2022.114648
[2022] Seismic soil–structure interaction analysis of wind turbine support structures using augmented complex mode superposition response spectrum method
DOI: https://doi.org/10.5194/wes-7-1007-2022
[2022] Distribution-free stochastic model updating of dynamic systems with parameter dependencies
DOI: https://doi.org/10.1016/j.strusafe.2022.102227
[2022] A Distributionally Robust Approach for Mixed Aleatory and Epistemic Uncertainties Propagation
DOI: https://doi.org/10.2514/1.j061394
[2022] Bayesian updating with two-step parallel Bayesian optimization and quadrature
DOI: https://doi.org/10.1016/j.cma.2022.115735
[2021] Nonparametric Bayesian stochastic model updating with hybrid uncertainties
DOI: https://doi.org/10.1016/j.ymssp.2021.108195
[2021] Robust optimization of a dynamic Black-box system under severe uncertainty: A distribution-free framework
DOI: https://doi.org/10.1016/j.ymssp.2021.108522
[2021] RESIDUAL SEISMIC PERFORMANCE ESTIMATION OF SEISMIC-ISOLATED BRIDGES BASED ON MODEL UPDATING USING APPROXIMATE BAYESIAN COMPUTATION
DOI: https://doi.org/10.2208/jscejseee.77.4_i_61
[2021] Bayesian Model Updating in Time Domain with Metamodel-Based Reliability Method
DOI: https://doi.org/10.1061/ajrua6.0001149

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AI 要約（直近 5 年の研究成果）

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関連研究室(8 件)

研究成果（35 件）

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所属学会・役職（0 件）