| 崔鹏,郭海燕*,黄启峰,李晓秋,李晶石,李福恒.海底管道受坠物锚击损伤模型试验研究[J].实验力学,2018,33(5):781~789 |
| 海底管道受坠物锚击损伤模型试验研究 |
| Model experimental study on damage of submarine pipeline subjected to falling anchor strike |
| 投稿时间：2017-04-18 修订日期：2017-07-30 |
| DOI：10.7520/1001-4888-17-094 |
| 中文关键词: 海底管道 锚击 试验 凹陷损伤 应变 |
| 英文关键词:submarine pipeline anchor shot experiment dent damage strain |
| 基金项目:山东省科技重大专项(2015ZDZX04003)、山东省重点研发计划(2018GHY115045)资助 |
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| 中文摘要: |
| 为探索不同影响因素对锚击作用下海底管道的损伤规律，本文通过海底管道受坠物锚击作用损伤试验，研究了坠物质量、坠落高度、管道铺设条件、水深和坠物形状对海底管道机械损伤的影响。试验结果表明，管道的凹陷损伤与应变随坠物质量和坠落高度的增加而增加；在相同质量的立方体、球体和模型锚三种形状坠物作用下，球体坠物对管道的损伤最严重；管道的损伤程度随铺设的沙土厚度和水深的增加而降低；沙土层比硬土层可以更好地降低管道的损伤程度；在距撞击点50cm范围内，管道发生塑性形变。 |
| 英文摘要: |
| In order to explore damage pattern of submarine pipeline subjected to different influencing factors, through damage experiment of submarine pipeline subjected to falling anchor strike, the influence of different factors, such as the mass of falling object, the height of fall, the pipeline laying condition, the depth of water and the shape of falling object on the mechanical damage of submarine pipeline are studied in this paper. Experimental results show that the depression damage and strain increase with the increase of falling mass and height of fall. Under the same mass condition, submarine pipeline subjected to action of cubic object, sphere object and model anchor respectively, the most serious damage is caused by sphere object. The damage degree of pipeline decreases with the increase of sand thickness and water depth. Sand layer can reduce the damage degree of pipeline better than that of hard soil layer. Within 50cm of impact point, plastic deformation occurs in pipeline. |
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