| 孙见锋,任冰,宋子路,王永学.波浪对弹性支撑结构物冲击作用试验研究[J].,2014,54(2):222-227 |
| 波浪对弹性支撑结构物冲击作用试验研究 |
| Experimental study of wave impact on structure with elastic supporters |
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| DOI：10.7511/dllgxb201402011 |
| 中文关键词: 波浪冲击 弹性支撑 结构振动 物理模型试验 |
| 英文关键词: wave impact elastic supporter structure vibration physical model experiment |
| 基金项目:国家自然科学基金资助项目(51179030,51221961). |
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| 中文摘要: |
| 位于浪溅区的弹性结构物的上部结构可能会受到幅值很大、历时较短的波浪冲击荷载．高强度的瞬时冲击荷载作用以及由它引起的结构振动响应往往是导致结构损坏的主要原因．通过物理模型试验,研究了波浪对弹性支撑平板结构的冲击作用．试验中设计了3种不同支撑刚度的结构物模型,对结构物底面所受的波浪冲击压力和结构物振动加速度响应进行了同步观测．分析了支撑刚度对冲击压力和结构振动的影响,以及结构物所受的波浪冲击压力与对应时段振动加速度之间的关系．试验结果表明,结构物支撑刚度越大,其所受的冲击压力也越大,对应时段的振动加速度幅值也越大． |
| 英文摘要: |
| When waves propagate against a structure in the splash zone, an impact force with a large magnitude and short duration may act on it. The high-strength instant impact force and the wave-induced structure vibrations may cause a significant damage to the structure. So, the wave impact on an elastically supported horizontal deck is focused on. Physical models with three kinds of different stiffness of the supporters are considered. The impact pressure and the vibration acceleration of the structure are measured simultaneously in the experiments. The influence of the stiffness of the supporters on impact pressure as well as the structure vibration is discussed. The relationship between the impact pressure and its corresponding vibration acceleration is analyzed. It is shown that the larger the support stiffness of the structure is, the greater the impact pressure and its corresponding vibration acceleration amplitude are. |
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