Japan Society of Civil Engineers 2025 Annual Meeting
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Session Details

Oral PresentationResearch on Diagnosis and Life Extension Technology for Road Bridge Decks

道路橋床版の設計の合理化と長寿命化技術(5)

Wed. Sep 10, 2025 9:00 AM - 10:20 AM JST
Wed. Sep 10, 2025 12:00 AM - 1:20 AM UTC
3F D2
9:00 AM - 9:10 AM JST(12:00 AM - 12:10 AM UTC)

[CS19-24]Development of a new joining method (Z spiral method) for precast prestressed concrete slabs Part 1
Workability verification test using full-scale test specimen

*Shenghua Guo1, Hiroshige Moriya1, Takashi Misawa1, Shohei Kawaguchi1, Yuji Kunii2, Satoru Sakai2, Kenji Iwayama2, Tatsuya Yoshida2, Shigeyuki Matsui3 (1. Okumura Corporation, 2. SHOWA CONCRETE INDUSTRY CO., LTD., 3. Osaka Institute of Technology)
9:10 AM - 9:20 AM JST(12:10 AM - 12:20 AM UTC)

[CS19-25]Development of a new Joining method(Z spiral method) for precast prestressed concrete slabs Part 2
Wheel load running tests considering semi-section construction

*Shinsuke Fujii1, Hiroshige Moriya1, Takashi Misawa1, Shohei Kawaguchi1, Yuji Kunii2, Kenji Iwayama2, Satoru Sakai2, Tatsuya Yoshida2, Shigeyuki Matsui3 (1. OKUMURA CORPORATION, 2. SHOWA CONCRETE INDUSTRY CORPORATION, 3. Osaka Institute of Technology)
9:20 AM - 9:30 AM JST(12:20 AM - 12:30 AM UTC)

[CS19-26]Development of a new joint method for PC deck slabs (Z-spiral method) Part 3
Change in concrete strain over time in floor slab and its joints due to prestressing

*Yuji Kunii1, Tatsuya Yoshida1, Kenji Iwayama1, Satoru Sakai1, Hiroshige Moriya2, Takashi Misawa2, Shohei Kawaguchi2, Shinsuke Fujii2 (1. SHOWA CONCRETE INDUSTRY CO.,LTD., 2. OKUMURA CORPORATION)
9:30 AM - 9:40 AM JST(12:30 AM - 12:40 AM UTC)

[CS19-27]Adoption of Head-bar joint in half section deck replacement method with holiday operation condition

*Toan Van Phan1, OONISHI MASAYA1 (1. Taisei Corporation)
9:40 AM - 9:50 AM JST(12:40 AM - 12:50 AM UTC)

[CS19-28]Bending Behavior of Precast Members with Serrated Shape UFC Joints

*Yuji Kumagai1, Kazunari Sasaki1, Tatsuo Tsubokura1, Yuma Marumoto1 (1. Obayashi)
9:50 AM - 10:00 AM JST(12:50 AM - 1:00 AM UTC)

[CS19-29]Experimental Study on Fatigue Acceleration by Water on Precast PC Slabs

*Yushi Kita1, Takamasa Fujimoto2, Masayuki Hashimoto3, Masanori Matsumoto3 (1. Central Nippon Expressway Company Limited, 2. Nippon Expressway Research Institute Company Limited, 3. Japan Construction Method and Machinery Research Institute)
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