沉箱式防波堤静力与动力稳定性设计体型分析  

Investigation on static and dynamic design dimension of caisson breakwater

作　　者：王元战[1] 张宏志[1] 周枝荣[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《海洋工程》2005年第2期66-70,76,共6页The Ocean Engineering

基　　金：国家自然科学基金资助项目(50279027);天津市科技攻关基金资助项目(043114711)

摘　　要：将沉箱式防波堤滑移和倾覆稳定性设计方法分为三类:静力设计方法、不允许沉箱出现滑移和摇摆角的动力设计方法、控制沉箱滑移量和摇摆角的动力设计方法。建立了满足给定抗滑和抗倾安全系数条件下,按静力设计方法确定沉箱尺度的控制方程,研究了波浪条件和安全系数取值对沉箱长宽比的影响。通过动力数值计算分析了沉箱长宽比对沉箱滑移量和摇摆角的影响,并与传统静力设计理论进行了比较,讨论了控制沉箱滑移量和摇摆角的动力设计方法的可行性。The sliding and overturning stability design methods of caisson breakwaters are classified into three categories of the static design method, the dynamic design method with no sliding and rocking motion allowed and the dynamic design method for controlling sliding distance and rocking angle. On the basis of the static design method, the formulae determining the width and height of a caisson are presented for given stability safety factors against sliding and overturning. The effects of wave conditions and safety factors on the ratio of caisson width to caisson height are investigated. The ratios of caisson width to caisson height are also calculated by the dynamic design method for controlling sliding distance and rocking angle and compared with those determined by the static design method. The feasibility of the dynanmic design method for controlling sliding distance and rocking angle of caissons is discussed.

关 键 词：沉箱式防波堤 稳定性 静力设计 动力设计 沉箱体型 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]