摘要
基于Biot渗流固结理论和水波绕射理论,应用特征函数展开法,推导了对应透空复合圆柱的绕射波势和波浪引起的海床内渗流压力分布的解析解式,由此计算了作用于固立透空复合圆柱底部上由波浪渗流压力所导致的浮托力和倾覆力矩,并与水平和垂直绕射波浪力和力矩进行了相应比较。计算结果表明,复合柱上部圆柱侧表面的透空性对水平方向的波浪直接作用有明显的减弱效应,对波浪渗流倾覆力矩也有一定的减弱效应,而对垂直方向的波浪直接作用及波浪渗流浮托力影响较小。海况条件和复合圆柱几何条件等因素的相对变化对波浪渗流作用均存在一定的影响,其中对渗流倾覆力矩的影响更为明显。在一定条件下,波浪渗流作用与绕射波浪作用可以具有相同的量级。
Based on Biot seepage consolidation theory and wave diffraction theory,the analytical solutions to the diffracted water wave potentials and the wave-induced seepage pressures referring to porous compound vertical circular cylinder resting on permeable elastic seabed are derived by applying the eigenfunction expansion approach,and then the wave-induced lift force and overturn moment caused by the seepage pressure on the bottom of compound vertical circular cylinder are accordingly evaluated and are compared with direct diffracted wave force and moment. The results demonstrate that the porosity of the lateral surface of the circular column resting on a circular base will lead an obvious reduction in direct horizontal wave loads on compound cylinder and certain reduction in seepage overturn moment on the bottom of compound cylinder,and having slight influence on direct vertical wave loads and wave-induced seepage uplift force on compound cylinder. The variation of ocean condition and structure geometry condition may have some influence on wave-induced seepage loads,especially on seepage moment. In certain condition,wave-induced seepage loads may have same order of magnitude as the direct wave loads
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第3期1-9,共9页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家海洋公益性行业专项资金资助项目(201005002)
关键词
透空复合圆柱
波浪绕射
波浪力
海床
渗流浮托力和倾覆力矩
porous compound circular cylinder
wave diffraction
wave force
seabed
wave-inducedseepage uplift force and moment
作者简介
陈瑞志（1987年生），男；研究方向：流体力学；
通讯作者：黄华；E-mail：tsyhh1982@163．com
