Japan Society of Civil Engineers 2025 Annual Meeting
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Session Details

Oral PresentationEarthquake Engineering and Earthquake Disasters

地中構造物の耐震 (2)

Thu. Sep 11, 2025 2:40 PM - 4:00 PM JST
Thu. Sep 11, 2025 5:40 AM - 7:00 AM UTC
3F H1+H2
Chair: Takashi Toda
2:40 PM - 2:50 PM JST(5:40 AM - 5:50 AM UTC)

[CS10-29]Effectiveness of Seismic Reinforcement for Non-Seismic Ductile Iron Pipelines Using Reinforcing Fittings (Part 1)- Reinforcement methods and performance verification -

*Daisuke Sakai1, Hiroyuki Bekki1, Masakatsu Miyajima2 (1. TAISEI KIKO CO.,LTD., 2. Lifeline Disaster Mitigation Lab.)
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2:50 PM - 3:00 PM JST(5:50 AM - 6:00 AM UTC)

[CS10-30]Effectiveness of Seismic Reinforcement for Non-Seismic Ductile Iron Pipelines Using Reinforcing Fittings (Part 2)
- Analytical Verification by Seismic Design

*Ryo Yoshikawa1, Kentaro Narita1, Hiroyuki Bekki2, Daisuke Sakai2 (1. NJS Co., Ltd., 2. TAISEI KIKO CO., LTD.)
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3:00 PM - 3:10 PM JST(6:00 AM - 6:10 AM UTC)

[CS10-31]A Study on the Influence of Adjacent Structures on the Seismic Design Results of Cut and Cover Tunnels

*Yasunori Awata1, Takahiro Kukidome1, Shunya Bando1, Shogo Ohtake1, Shunsuke Murase2, Shoya Hirano2 (1. Oriental Consultants Co., LTD., 2. Hanshin Expressway Company Limited)
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3:10 PM - 3:20 PM JST(6:10 AM - 6:20 AM UTC)

[CS10-32]Influence of coefficient of subgrade reaction on stiffness ratio to strain transfer coefficient relation in the design of cut and cover tunnels

*Tatsuya Doi1, Jun Izawa1, Hidetoshi Nishioka2, Takafumi Shimada2 (1. Railway Technical Research Institute, 2. Chuo University)
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3:20 PM - 3:30 PM JST(6:20 AM - 6:30 AM UTC)

[CS10-33]Study of the effect of different modeling methods for tunnels intersecting crush zones on the critical displacement

*Ippei Hata1, Yuta Mitsuhashi1, Seiji Nagata2, Yoshinori Miyagawa2, Yuto Yamanoi2, Hiroyuki Kumata3 (1. KOZO KEIKAKU ENGINEERING Inc., 2. Central Research Institute of Electric Power Industry, 3. Tohoku Electric Power Co.,Inc.)
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3:30 PM - 3:40 PM JST(6:30 AM - 6:40 AM UTC)

[CS10-34]Seismic design of immersed tunnel shaft wall using 2D material nonlinear FEM model

*Shunya Bando1, Takahiro Kukidome1, shogo ohtake1 (1. Oriental Consultants)
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