STUDY ON WAVE FORCE ACTING ON THE HARBOR SIDE OF A CAISSON DURING TSUNAMI OVERFLOW AND COUNTERMEASURES AGAINST THE OVERTURNING OF THE CAISSON

• NAKAMURA Tomoaki

  名古屋大学 大学院工学研究科社会基盤工学専攻

• MINEURA Ryo

  名古屋大学大学院工学研究科社会基盤工学専攻

• SAWA Yutaro

  名古屋大学大学院工学研究科社会基盤工学専攻

• MIZUTANI Norimi

  名古屋大学 大学院工学研究科社会基盤工学専攻

• KOTAKE Yasuo

  東洋建設株式会社 鳴尾研究所

Bibliographic Information

Other Title

• 混成堤ケーソン港内側に作用する越流津波による波力と転倒防止策に関する研究

Abstract

 Prototype-scale numerical analyses are carried out to investigate wave force acting on the harbor side of a caisson during tsunami overflow and effectiveness of countermeasures against overturning of the caisson. Numerical results show that the wave force acting on the harbor side of the caisson is overestimated by the force calculated from water surface elevation on an assumption of hydrostatic pressure, and its overestimation becomes large with an increase in a relative overflow height. This relationship is found to be affected by the permeability of the rubble mound, suggesting that the permeability of the rubble mound is essential when evaluating the wave force. Furthermore, it is revealed that there are effective configurations of the upper part of the caisson to prevent its overturning motion, and the effectiveness of the change in the configuration can be assessed using the scale of vortices.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 70 (2), I_492-I_497, 2014

  Japan Society of Civil Engineers

Keywords

• tsunami
• caisson
• wave force
• permeability
• overturning
• countermeasure
• vortex

Details

• CRID: 1390001205353925632
• NII Article ID: 130004697331
• DOI: 10.2208/jscejoe.70.i_492
• ISSN: 21854688
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed