FLAP GATE TO PREVENT URBAN AREA FROM TSUNAMI
Authors propose the flap gate to protect against tsunamis and have begun studies on the hydraulic characteristics and on the design of the gate. When danger of a tsunami is predicted, the flap stands up in a couple of minutes to protect coast inhabitant area from Tsunami invasion. In this paper, we discuss two-dimensional hydraulic model tests in a flume tank using a bore wave generator to confirm the wave pressure and gate behavior required for flap gate design. In addition, hydraulic characteristics due to tsunami were simulated using the VOF method to compare the results of the model tests. The results of numerical analysis generally tracked the results obtained in the model tests. However the wave pressure in numerical analysis did not agree with the results of the model tests in wave breaking condition. Three dimensional FEM by Flow 3D also simulated run-up behavior of Tsunami at a port area where the flap gate was installed at a mouth of the port. Through the test and calculation, flap gate for Tsunami is efficient for Tsunami invasion to port inhabitant area.
Tsunami Flap gate Model test Numerical simulation Tsunami wave force
Osamu Kiyomiya Kazuya Kuroki
Dept. of Civil Engineering , Waseda University, Tokyo, Japan Student of Civil Engineering Waseda University, Tokyo, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）