Abstract
Hydraulic mechanism of sustained tsunami wave pressure acting on land structures was investigated theoretically. The effect of wave pressure amplification due to wave reflection was estimated based on momentum conservation law. On the other hand, backwater effect was modeled by energy conservation law. The formulas which indicate wave pressure on 2D wall and 3D structure were derived. The theoretical result was compared with the hydraulic model test results and numerical computation results and good agreement was found out.
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