不规则波与开孔沉箱相互作用时沉箱构件受力的计算方法  

CALCULATING METHOD OF IRREGULAR WAVE PRESSURES ON COMPONENTS OF PERFORATED CAISSONS WITH TOP COVER

作　　者：陈雪峰[1] 李玉成[1] 马宝联[2] 姜俊杰 鲁桂荣[1] 

机构地区：[1]大连理工大学 [2]天津海事局,天津300456 [3]中交水运规划设计院,北京100007

出　　处：《中国海洋平台》2005年第4期1-9,共9页China offshore Platform

基　　金：国家自然科学基金(49910161985);交通部规范修订项目联合资助。

摘　　要：通过不规则波与有顶板开孔沉箱正向作用的物理模型实验,分析和研究了有顶板开孔沉箱的开孔板、底板及顶板的压差以及后实体板等构件的压力分布规律。通过最小二乘法拟合得到开孔板静水位、中部以及底脚内外压差与主要影响因素的拟合关系式,利用相同的方法分析了后实体板静水位、中部以及底脚的压强分布规律并给出简化计算关系式,还分析了底板的压差及顶板压强分布并给出相应的计算式。将本文的实验结果与规则波波态下开孔沉箱构件受力的实验结果进行对比,可知在多数情况下不规则波波态下开孔沉箱构件受力较大。本文关于不规则波波态下有顶板开孔沉箱各部分构件压力分布的研究以及与规则波相应结果的对比可为开孔沉箱的工程设计提供相应依据。The study of Irregular wave acting on perforated caissons with top cover is experimental investigated. The pressure （or pressure difference） distributions of the different components of perforated caissons such as the front porous plate, the back solid plate, the bottom plate and the top cover are discussed.respectively. Based on the Least Square Method, the correlated relationship of pressure differences between the outer side and the inner side of front porous plate with their main influencing parameters is analyzed, and the correlated equations to calculate the pressure differences of the front porous plate at various positions of the caisson are obtained. In the same way. the pressure distributions of the back solid plate at different positions and the top cover are illustrated, respectively. Then the pressure differences of the bottom plate between the outer side and the inner side are obtained. Comparing of pressure or pressure different between under the regular wave condition and under irregular one. it is concluded that the pressure or pressure difference under irregular wave condition is greater than that under regular wave condition.

关 键 词：不规则波 顶板 开孔沉箱 压力分布 

分 类 号：P753[交通运输工程—港口、海岸及近海工程]