近海结构波浪荷载取值方法比较

Wave Load Calculation Comparison between Design Codes of Three Countries for Offshore Structure

设计中波浪荷载的取值关系到近海工程的结构安全和工程投资,特别是海外项目的招投标阶段,与欧美各国规范的差异将显著影响我国工程行业的海外布局。该文通过比较中、美、日三国规范,详细探讨在不同情况下波浪荷载的取值异同。结果表明:立波情况下,日本规范波浪荷载显著大于中美规范;远破波情况下,中国规范的波浪力在坡比比降较大时计算结果较大;近破波情况下,日本规范波浪力整体偏大,中美规范计算结果趋同。

The value of wave load in the design is related to the structural safety and engineering investment of offshore projects,especially in the bidding stage of overseas projects.The difference with the norms of European and American countries will significantly affect the overseas layout of China s engineering industry.By comparing the codes of China,the United States and Japan,this paper discusses in detail the similarities and differences in the value of wave load under different conditions.The results show that the wave load of the Japanese norm is significantly greater than that of the American norm.In the case of far breaking waves,the calculated results of the wave forces in Chinese norms are larger when the slope ratio and specific drop are larger.In the case of near-breaking waves,the Japanese norm wave force is generally large,while the Chinese and American norm calculation results are similar.