非洲西海岸长周期波浪海域超大沉箱施工作业条件分析

Analysis of operation conditions for super-large caisson construction in long-period wave areas on the west coast of Africa

为解决非洲西海岸长周期波海域超大沉箱安全施工和优质履约,调研分析了施工海域30 a的波浪监测数据和依托工程的施工难点,基于该海域长周期波浪的实测数据,针对有效波高和谱峰周期的联合分布和概率统计,以及可连续施工作业条件进行分析,得到了有效波高和谱峰周期的概率分布规律、不同分项工程最有利作业时间,并给出了该海域施工作业的指导意见,为长周期波浪区域超大沉箱施工部署研究提供了基础依据。

In order to solve the safe construction and high-quality performance of super-large caisson in long-period wave areas on the west coast of Africa,the wave monitoring data for 30 years in the construction area and the construction difficulties of the supporting project were investigated and analyzed.Based on the measured data of long-period waves in the sea area,the joint distribution and probability statistics of significant wave height and spectral peak period,as well as the conditions of continuous construction operation,were analyzed.The probability distribution law of significant wave height and spectral peak period and the most favorable working time of different projects were obtained,and the guiding opinions for construction operations in the sea area were given,which provides a basis for the research on the construction deployment of super-large caisson in long-period wave areas.