Japan Society of Civil Engineers 2025 Annual Meeting
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Session Details

Oral PresentationSection VI

地盤改良(4)

Fri. Sep 12, 2025 3:10 PM - 4:30 PM JST
Fri. Sep 12, 2025 6:10 AM - 7:30 AM UTC
231
3:10 PM - 3:20 PM JST(6:10 AM - 6:20 AM UTC)

[VI-1326]Improving construction accuracy of grid-improvement using the WILL-i method
Part1:Technical challenges and their solutions

*Mitsuru Kobayashi1, Keiichi Tsutsui1, Takeo Nishimura2, Arashi Shimano3, Komei Hayashi3 (1. OBAYASHI CORPORATION, 2. Hokuriku Regional Agricultural Administration Office, 3. SANSHIN CORPORATION)
3:20 PM - 3:30 PM JST(6:20 AM - 6:30 AM UTC)

[VI-1327]Improving construction accuracy of grid-improvement using the WILL-i method
Part 2: Confirmation of countermeasure effects and ground improvement quality

*Arashi Shimano1, Kouichi Uchihori1, Takeo Nishimura2, Mitsuru Kobayashi3, Keiichi Tsutsui3 (1. SANSHIN CORPORATION, 2. Hokuriku Regional Agricultural Administration Office, 3. OBAYASHI CORPORATION)
3:30 PM - 3:40 PM JST(6:30 AM - 6:40 AM UTC)

[VI-1328]Quality of improved piles constructed using the flexible cross-section improvement method

*Shoichi Tsukuni1, Kazuo Konishi1, Hiroshi Matsukawa1 (1. Takenaka Civil Engineering & Construction Co.,Ltd.)
3:40 PM - 3:50 PM JST(6:40 AM - 6:50 AM UTC)

[VI-1329]Displacement control construction case of soft ground including hard layers using middle-pressure injection mechanical mixing method

*Takahiro Komaki1, Shingo Nakayama2, Hirofumi Makizono3 (1. Toyo Industry Co., Ltd., 2. Shinseikensetu Co., Ltd., 3. Fujiken Co., Ltd.)
3:50 PM - 4:00 PM JST(6:50 AM - 7:00 AM UTC)

[VI-1330]In-ground displacement in the CDM-EXCEED construction method

*Yukio Tonishi1, Susumu Matsuzawa2, Hiroyuki Saegusa3, Atsushi Fujioka4, Shinnpei Noguchi5, Manabu Takahashi6 (1. Shimizu corporation, 2. Penta-Ocean Construction Co.LTD , 3. Toa corporation , 4. Toyo Construction Co.LTD, 5. Toko Geotechs Co.LTD , 6. Nittoku Construction Co.LTD)
4:00 PM - 4:10 PM JST(7:00 AM - 7:10 AM UTC)

[VI-1331]On the variation coefficient of the strength of the ground improvement method that discharges air

*Hiroshi Matsukawa1, Katsumi Ookori2, Reio Takano3, Takayuki Shinoi4, Kohei Akimoto5, Kouji Nagasaki6 (1. Takenaka Civil Engineering & Construction Co., Ltd., 2. Aomi Construction Co.,Ltd, 3. Onoda Chemical-Construction Co.,Ltd, 4. Nippon Kaiko Co.,Ltd, 5. JAPAN FOUNDATION ENGINEERING CO.,LTD., 6. RAITO KOGYO CO.,Ltd)
4:10 PM - 4:20 PM JST(7:10 AM - 7:20 AM UTC)

[VI-1332]Streamlining control using digital data in chemical grouting methods

*Hiroshi Yamaguchi1, Arashi Shimano1, Minju Li1, Takahito Aogae2, Hiroaki Hoshi2 (1. SANSHIN CORPORATION, 2. TOMEC CORPORATION)
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