| 丁兆强,任冰,王永学,任效忠.随机波浪对浪溅区三维结构物冲击作用试验研究[J].,2008,(6):904-911 |
| 随机波浪对浪溅区三维结构物冲击作用试验研究 |
| Experimental research on random wave impact on three-dimensional structure in splash zone |
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| DOI：10.7511/dllgxb200806022 |
| 中文关键词: 随机波浪 单向波 波浪冲击 波向角 |
| 英文关键词: random wave oblique wave wave impact wave direction |
| 基金项目:基金项目 [HTSS]国家自然科学基金资助项目(50409014)；辽宁省自然科学基金资助项目(20041075). |
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| 中文摘要: |
| 通过物理模型试验研究了随机波浪对位于浪溅区三维结构物的冲击作用．试验波浪为单向随机波．试验中波浪分别从正向(波向角 β 0?)和斜向( β 15?、30?、45?)入射，入射波波高 H 1/3 =7.5~20 cm，谱峰周期 T p=0.75~2.0 s，模型相对净空 s 与入射波高 H 1/3 之比为0~0.5．对不同试验组次试验数据的统计分析比较得出 正向波和斜向波作用于结构物底面的冲击压力特征值，中部大、周围小；波浪冲击压力等值线基本上垂直对称分布于波向线两侧；结构物所受波浪冲击力随入射波波高增大而增大，对应相对板宽的变化出现2个峰值，在相对净空\%s/H\% \{1/3\}为0.1和0.2时到达最大值． |
| 英文摘要: |
| The experimental investigation of random wave slamming on the three-dimensional structure in the splash zone is conducted by physical model test. The test wave is unidirectional and irregular wave. The experiments are carried out with perpendicular random waves ( β 0?) and oblique random waves ( β 15?, 30?, 45?), the significant wave heights H 1/3 ranging from 7.5 cm to 20 cm, the peak wave periods T p ranging from 0.75 s to 2.0 s, and the relative clearance of the model with respect to the significant wave height ranging from 0 to 0.5. The statistical analysis results of different test cases are: The statistical distribution characteristics of the oblique, perpendicular and irregular waves indicate that the impact pressures in the center part of the structure are obviously greater than that on the surrounding part . The isoline of the peak pressures is perpendicular to the wave ray and has a symmetrical distribution. The significant peak impact force increases with an increase of the significant wave height, and has two peak values versus different relative structure width, and the significant peak impact force reaches the maximum value at \%s/H\% 1/3 =0.1 and 0.2. |
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