Abstract Since tsunamis pose a threat to many coastal areas, the mitigation of tsunami forces is important in saving lives and reducing damage when a tsunami comes. Barriers are generally constructed to protect coasts from extreme waves including tsunamis. Although extensive research has been conducted to investigate tsunami forces on coastal structures, the effectiveness of defensive structures such as barriers, seawalls and embankments in mitigating these forces has not been studied thoroughly. This paper presents a series of physical experiments to investigate the effectiveness of barriers in reducing tsunami bore impact (and associated pressures) on a vertical wall. While horizontal forces and overturning moments on the wall can be significantly reduced if the barrier is high enough, low barriers can lead to larger horizontal forces and overturning moments than if the barrier were absent. Predictive equations are proposed for reduction ratios of horizontal forces and overturning moments, as well as other methods to estimate horizontal forces.

中文翻译：

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减轻海啸钻孔对屏障后垂直墙壁的影响

摘要 由于海啸对许多沿海地区构成威胁，因此在海啸来临时，减轻海啸力量对于挽救生命和减少损害具有重要意义。通常建造屏障是为了保护海岸免受包括海啸在内的极端海浪的影响。尽管已经进行了广泛的研究来调查沿海结构上的海啸力量，但尚未彻底研究屏障、海堤和堤防等防御结构在减轻这些力量方面的有效性。本文介绍了一系列物理实验，以研究屏障在减少垂直墙壁上的海啸钻孔冲击（和相关压力）方面的有效性。如果障碍物足够高，可以显着减少墙上的水平力和倾覆力矩，与没有障碍物的情况相比，低障碍物会导致更大的水平力和倾覆力矩。提出了用于水平力和倾覆力矩的折减率的预测方程，以及估计水平力的其他方法。