The numerical expressions of the derivative of finite water-depth composite Green function were deducted based on the symmetrical surface of ocean structures,and the singularities were analyzed.

• 本文根据海洋结构物的物面对称性,在有限水深复合格林函数表达式的基础上推导出了格林函数偏导数的数值计算表达式,并对格林函数的奇异性进行了分析。