Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)
Online ISSN : 2185-4688
ISSN-L : 2185-4688
Annual Journal of Civil Engineering in the Ocean Vol.30
EXPERIMENTAL STUDY ON THE STABILITY OF THE SUBMERGED STEEL FLAME STRUCTURE AGAINST TSUNAMI
Kazuhiro HIGASHIYAMAKenichiro SHIMOSAKOTakanobu ARAKAWA
Author information
JOURNAL FREE ACCESS

2014 Volume 70 Issue 2 Pages I_402-I_407

Details
Abstract
 Tsunami breakwaters are required to have the redundancy and ductility, which is the performance to maintain the tsunami prevention effect without being broken immediately, even by the huge tsunami exceeding the design level. Kamaishi baymouth breakwater was destroyed by the tsunami in March 11, 2011. Hydraulic model experiments reproducing the failure had been conducted and proved that the sliding of the submerged breakwater at the opening section caused the failure of the breakwater head. Also, it had proved that the normal caisson structure or the precast concrete blocks could not secure the stability against huge tsunamis as a submerged breakwater.
 The steel flame structure filled with rubble stone, which is similar to the huge gabion, have been developed as a submerged breakwater at the opening section of tsunami breakwater to increase the stability against tsunami flow. In this study, hydraulic model experiments were conducted in order to investigate the stability against tsunami. The lift force acting on this permeable structure is much smaller than that on the normal submerged caisson structures.
Content from these authors
© 2014 Japan Society of Civil Engineers
Previous article Next article
feedback
Top