STUDY ON COUNTERMEASURES FOR REDUCING TSUNAMI FORCE ACTING ON BUILDINGS

• KIKU Masami

  名古屋大学 大学院工学研究科社会基盤工学専攻

• NAKAMURA Tomoaki

  名古屋大学 高等研究院

• MIZUTANI Norimi

  名古屋大学 大学院工学研究科社会基盤工学専攻

• HIRAKAWA Nobuya

  前田建設工業株式会社 建築事業本部 建築設計統括部

• ASHIZAWA Satoshi

  前田建設工業株式会社 建築事業本部 建築設計第1部 プロジェクト支援グループ

Bibliographic Information

Other Title

• 建築物に作用する津波力の低減対策に関する研究

Abstract

 To enhance the tenacity of buildings located along coasts such as tsunami evacuation buildings, the effectiveness of small-scale countermeasures that can be constructed by their administrators is investigated using a coupled fluid-structure-sediment interaction numerical model that can compute air-water two-phase flow. The investigation focuses on an impermeable tsunami-resistant wall at the seaward side of a building as the countermeasures, and generates a single leading long-period wave against the building with the wall. Numerical results show that the maximum tsunami force acting on the building can be overestimated by the resultant force of hydrostatic pressure calculated from the maximum inundation depth in front of it, suggesting that the numerical model is a useful tool to evaluate the maximum tsunami force using the vertical distribution of the wave pressure. Furthermore, when the wall is placed in the vicinity of the quay wall, a higher wall can effectively reduce the tsunami force acting on the building. In contrast, when the wall is placed in the vicinity of the building, it can be effective to shorten the wall in terms of the reduction in the tsunami force. In addition, the wall can delay the impingement of the tsunami and the onset of the maximum tsunami force for large tsunami height. From these results, it is demonstrated that the construction of the short wall near the building would be an effective countermeasure.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 69 (2), I_413-I_418, 2013

  Japan Society of Civil Engineers

Keywords

• tsunami
• building
• countermeasure
• wave force
• wave pressure
• numerical analysis

Details

• CRID: 1390001205352539392
• NII Article ID: 130004961752
• DOI: 10.2208/jscejoe.69.i_413
• ISSN: 21854688
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed