摘要
基于线性势流假定,对斜向波作用下带横隔板局部开孔沉箱防波堤的水平波浪力进行了理论研究。给出了开孔沉箱法向水平力和横隔板受力的理论计算方法,在极限情况下波浪力的计算结果与文献中的已有结果一致。利用数值算例分析了开孔沉箱总水平力的主要影响因素。开孔沉箱法向总水平力的减小主要集中于结构上半部分波浪影响范围以内。增加单个开孔沉箱的长度有利于减小结构所受总水平波浪力。当波浪入射角或沉箱前开孔墙孔隙影响系数幅值较大时,开孔沉箱横隔板上总水平力的最大值要超过相应的沉箱法向总水平力,此时要注意横隔板的强度问题。
A theoretical study of diagonal wave forces acting on partially perforated caisson breakwater with transverse walls is performed based on the linear potential theory. An analytical method is developed to calculate the normal horizontal forces acting on caissons, as well as the horizontal forces acting on transverse walls. The calculating results of wave forces for limited cases are the same to existing results in literatures. The main influencing factors of wave forces are analyzed by means of numerical examples. The reduction of normal total horizontal force acting on perforated caisson is mainly due to the upper perforated section of structure, where the influence of incident waves is significant. The increasing single caisson length is helpful to reducing total horizontal force acting on caissons. With larger incident wave angle or porous influence parameter modulus of caisson perforated front wall, the maximum total horizontal force acting on the transverse wall is larger than the corresponding normal total horizontal force acting on the caisson. At this time, the structural strength of transverse walls should be enhanced.
出处
《海洋学报》
CAS
CSCD
北大核心
2008年第2期137-146,共10页
基金
长江学者和创新团队发展计划资助项目(IRT0420)
国家自然科学基金资助项目(50609001)
关键词
斜向波
局部开孔沉箱
横隔板
水平波浪力
diagonal wave
partially perforated caisson
transverse wall
horizontal wave force
作者简介
刘勇（1977-），男，山东省烟台市人，博士，从事波浪对结构物作用的研究。E-mail：liuyong_77@hotmail．com
通信作者，E-mail：liyuch@dlut．edu．cn
