Study on the strength of a building subjected to overshoot wind force due to gusts

• Project/Area Number: 15K18155
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Building structures/Materials
• Research Institution: Kobe University
• Principal Investigator: Takeuchi Takashi 神戸大学, 工学研究科, 助教 (80624395)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 立ち上がり時間の短い突風 / 風力のオーバーシュート現象 / 数値流体計算 / 高速載荷

Outline of Final Research Achievements

Unsteady force acting on structural elements of a building subjected to the overshoot wind force due to a short-rise-time gust and the effect of the loading rate of the unsteady wind force on the strength of the structural element were investigated using a CFD simulation and high speed cyclic loading tests. The characteristics of unsteady force acting on the rafters of a gable roof was clarified using the distribution of overshoot wind pressure simulated by the CFD simulation. And the effects of loading speed on stiffness and strength of a column-sill joint against pull-out were clarified using a high responsible actuator.

Research Products

• [Journal Article] Effects of Wind Direction and Roof Shape on Unsteady Wind Pressure on a Low Rise Building under a Short-rise-time Gust (2016)
  • Author(s): Takashi TAKEUCHI, Junji MAEDA, Ryota KAWAKAMI, Naohiro TAKEUCHI
  • Journal Title: Proceedings of 8th International Colloquium on Bluff Body Aerodynamics and Applications Volume: 1
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 建物のオーバーシュート風圧力に及ぼす風向角の影響に関する実験的研究 (2016)
  • Author(s): 川上綾太，大坪和広，前田潤滋，竹内崇，友清衣利子
  • Journal Title: 第24回風工学シンポジウム論文集 Volume: 1 Pages: 199-204
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Unsteady Wind Pressure on A Low Rise Building Under A Short-Rise-Time Gust (2016)
  • Author(s): Takashi TAKEUCHI, Junji MAEDA, Ryota KAWAKAMI, Kazuhiro OTSUBO, Naohiro TAKEUCHI
  • Journal Title: Proceedings of 6th U.S.-Japan Workshop on Wind Engineering Volume: 1
  • Acknowledgement Compliant
• [Journal Article] Effects of Wind Direction on Properties of Unsteady Wind Pressure on A Gable Roof Body under A Short-Rise-Time Gust (2015)
  • Author(s): Takashi TAKEUCHI, Junji MAEDA
  • Journal Title: Proceedings of 14th International Conference on Wind Engineering Volume: 1
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ステップ関数的突風を受ける住宅の非定常風圧力特性に及ぼす風向角の影響に関する研究（その1 切妻屋根建物に対する実験的検討） (2016)
  • Author(s): 川上綾太，大坪和広，竹内崇，友清衣利子，前田潤滋
  • Organizer: 日本建築学会大会(九州)
  • Place of Presentation: 福岡大学七隈キャンパス（福岡市城南区）
  • Year and Date: 2016-08-26
• [Presentation] ステップ関数的突風を受ける住宅の非定常風圧力特性に及ぼす風向角の影響に関する研究（その2 屋根面のオーバーシュート風圧係数の分布に及ぼす風向角と屋根形状の影響） (2016)
  • Author(s): 川上綾太，竹内崇，大坪和広，友清衣利子，前田潤滋
  • Organizer: 日本建築学会大会(九州)
  • Place of Presentation: 福岡大学七隈キャンパス（福岡市城南区）
  • Year and Date: 2016-08-26
• [Presentation] ステップ関数的突風を受ける住宅の非定常風圧力特性に及ぼす風向角の影響に関する研究（その3 数値流体計算による検討） (2016)
  • Author(s): 竹内直広，川上綾太，竹内崇，大坪和広，友清衣利子，前田潤滋，孫玉平
  • Organizer: 日本建築学会大会(九州)
  • Place of Presentation: 福岡大学七隈キャンパス（福岡市城南区）
  • Year and Date: 2016-08-26
• [Presentation] 立ち上がり時間の短い突風下の建物に作用する非定常風圧力に及ぼす屋根形状の影響に関する研究 (2015)
  • Author(s): 竹内崇，前田潤滋
  • Organizer: 日本建築学会
  • Place of Presentation: 東海大学湘南キャンパス（神奈川県平塚市）
  • Year and Date: 2015-09-06
• [Presentation] 立ち上がり時間の短い突風下の建物に作用する非定常風圧力に及ぼす屋根形状の影響 (2015)
  • Author(s): 竹内崇，前田潤滋
  • Organizer: 日本風工学会年次研究発表会
  • Place of Presentation: 徳島大学常三島キャンパス（徳島県徳島市）
  • Year and Date: 2015-05-27