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首页> 外文期刊>Coastal Engineering Journal >Experimental study on the hydrodynamic impact of tsunami-like waves against impervious free-standing buildings
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Experimental study on the hydrodynamic impact of tsunami-like waves against impervious free-standing buildings

机译：海啸状波浪对不透水独立建筑物的水动力影响的试验研究

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摘要

Tsunamis, landslide-generated waves, and dam failures are rare, but highly destructive phenomena, associated with extreme loading on infrastructure. Recent events showed that specific measures must be taken to guarantee safety of both people and the built environment. This experimental study investigates the forces and moments exerted on free-standing buildings that are induced by both surges and bores. The hydrodynamic impact was characterized by high splash, subsequently followed by a quasi-steady flow around the structure. For dry bed surges, the time history of the horizontal force was proportional to the momentum flux per unit width. For wet bed bores, an attenuation of the peak force due to the presence of an aerated front was observed and the introduction of a reduction coefficient was necessary to achieve a realistic force estimation. Additional force analysis in terms of peak time, wave height at maximum force and impulse also pointed out some key differences between forces exerted by dry bed surges and wet bed bores. The occurrence of the maximum tilting moment on the building coincided with the maximum horizontal force and an evaluation of the cantilever arm was possible. These findings provide engineers with practical information for the design of safer coastal structures.
机译：海啸，滑坡产生的波浪和大坝倒塌是罕见的，但破坏性很高，与基础设施的超负荷相关。最近发生的事件表明，必须采取具体措施来确保人员和建筑环境的安全。这项实验研究调查了由浪涌和钻孔引起的作用在独立式建筑物上的力和力矩。流体动力冲击的特点是飞溅大，随后在结构周围产生准稳态流动。对于干床涌浪，水平力的时间历程与每单位宽度的动量通量成正比。对于湿床孔，观察到由于存在充气前锋而导致的峰值力衰减，并且必须引入减小系数才能实现逼真的力估算。关于峰值时间，最大作用力下的波高和冲击力的其他作用力分析也指出了干床涌浪和湿床膛所施加的力之间的一些关键差异。建筑物上最大倾斜力矩的出现与最大水平力一致，因此可以评估悬臂。这些发现为工程师提供了有关设计更安全的沿海结构的实用信息。

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