对于波浪与透空外壁同轴双筒柱的相互作用问题，利用速度势的特征函数展开式和透空壁内流体速度与两壁间压力差成正比的线性模型，建立了一个线性解析解。应用这一模型开展了数值实验，用以检验孔隙系数和透空部分大小以及内外柱径之比对双筒柱上波浪力和波面高度的影响。计算结果表明，外壁孔隙系数和透空部分大小对波面升高和波浪荷载有很大影响，通过调整各个系数，应用双筒透空柱可以减小周围的波面高度及其上的波浪荷载。

A linear analytic solution is derived for wave interaetion with a combined cylinder with a solid interior column surrounded by a coaxial porous exterior column. The solution is established on an eigenfunction expansion of velocity potential and a linear model between the fluid velocity inside a porous wall and the pressure difference between two sides of the wall. Numerical experiments have been carried out to examine the wave force and wave run-up on combined porous cylinders with different porous coefficient, porous section, and ratio between the radii of the interior and exterior columns. It is found that the porous rate of the exterior wall and the size of the porous section have a significant influence on the wave run-up and wave loads on cylinders. Cylinders with whole porous section on the outer column are more suitable for reducing wave loads and wave run-up on cylinders.