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doi:10.3850/GI131
Performance Based Design (PBD) of Liquefaction Countermeasure for Kisogawa Water Channel
Takashi Hara1,a, Kazutaka Otsushi1, Atsushi Yashima1, Tomoo Kato2, Yu Ootake3,b, Kazuhiro Sakanashi3 and Ayumi Honda3
1Civil Engineering, Gifu University, Yanagido 1-1, Gifu, Gifu 501-1193, Japan.
at_hara@gifu-u.ac.jp
2Kisogawa Management Office, Japan Water Agency, Makai-ji Higashi 26-1 Sofue-cho, Inazawa, Aichi 495-0036, Japan.
Tomoo_Kato@water.go.jp
3Structure Engineering Division, CTI Engineering Co., Ltd., Nihonbashi-hamacho 3-21-1, Chuo-ku, Tokyo103-8430, Japan.
bootake@ctie.co.jp
ABSTRACT
This paper introduces a design example, which is grounded on performance based design, of liquefaction countermeasure for Kisogawa Water Channel built in liquefiable ground during earthquake. In this design, steel sheet-pile wall with drainage was used effectively to reduce the seismic response of the structures of the water channel, which can satisfy the seismic performance requirements, operative water volume for serviceability, and deformation of structures for reparability and safety. The effectiveness of the proposed countermeasure to the structures built in liquefiable ground was confirmed by using two dimensional effective stress FEM analysis, which can reproduce the results of the shaking table tests in both cases of with and without the countermeasure. Conclusively, reasonable (i.e. economic and rational) antiearthquake measure of the water channel could be designed by appropriate application of the proposed countermeasure.
Keywords: Liquefaction countermeasure; performance based design (PBD); flume structure;
steel sheet-pile wall with drainage.
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