Journal Paper

• Koshin Okamura, Alex Shegay, Daiki Sato. PREDICTION MODEL FOR CHANGE SINREIN FORCEMENT PROPERTIES DUE TO STRAIN AGEING, AIJ Journal of Technology and Design, Architectural Institute of Japan, Vol. 30, No. 76, pp. 1263-1268, Oct. 2024.

International Conference (Not reviewed / Unknown)

• A.V. Shegay, K. Okamura, D. Sato. Predictive models for changes in reinforcement characteristics due tostrain ageing effects, New Zealand Society for Earthquake Engineering Annual Conference, Predictive models for changes in reinforcement characteristics due to strain ageing effects, Apr. 2023.

Domestic Conference (Not reviewed / Unknown)

• Koshin Okamura, Alex Shegay, Masaki Maeda, Daiki Sato. Analysis of the effect of strain ageing caused by seismic demands on reinforcing bars in RC building., 日本建築学会大会（関東）学術講演会, 日本建築学会大会学術講演梗概集, Architectural Institute of Japan, 構造IV, pp. 5-6, Aug. 2024.
• OKAMURA Koshin, MAEDA Masaki, Alex SHEGAY, SATO Daiki. Analysis of strain generated in reinforcing bars of RC buildings during earthquakes Part 2: Experimental results for RC beam members, 2023年度（第94回）関東支部研究発表会, 日本建築学会関東支部研究報告集, Architectural Institute of Japan, Ⅰ, pp. 285-288, Mar. 2024.
• Koshin Okamura, Alex Shegay, Daiki Sato. Analysis of strain generated in reinforcing bars of RC buildings during earthquakes Part 1: Earthquake analysis of a 10-story building using a timber end spring model, 2023年度（第94回）関東支部研究発表会, 日本建築学会関東支部研究報告集, Architectural Institute of Japan, Ⅰ, pp. 281-284, Mar. 2024.
• Koshin Okamura, Alex Shegay, Daiki Sato. Prediction model for changes in reinforcement properties due to strain ageing (Part2: Prediction model development and verification), 日本建築学会大会（近畿）学術講演会, 日本建築学会大会学術講演梗概集, Architectural Institute of Japan, pp. 13-14, Sept. 2023.
• Alex Shegay, Koshin Okamura, Daiki Sato. Prediction model for changes in reinforcement properties due to strain ageing (Part1: Experiment outline and results), 日本建築学会大会（近畿）学術講演会, 日本建築学会大会学術講演梗概集, Architectural Institute of Japan, pp. 11-12, Sept. 2023.
• Koshin Okamura, Alex Shegay, Daiki Sato. Prediction method for changes in reinforcement properties due to strain ageing (Part2 Proposed prediction model for changes in reinforcement characteristics), 2022年度（第93回）関東支部研究発表会, 日本建築学会関東支部研究報告集, Architectural Institute of Japan, Ⅰ, pp. 301-304, Feb. 2023.
• Koshin Okamura, Alex Shegay, Daiki Sato. ひずみ時効による鉄筋の強度及び延性変化に影響を及ぼす材料特性の特定, 日本地震工学会大会梗概集, 日本地震工学会, Dec. 2022.

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