开孔沉箱结构消浪效果和水动力特征试验探究——以日照港岚山港区码头为例  

Experimental Study on Wave Dissipation Effect and Hydrodynamic Characteristics of Perforated Caisson Structure:Taking the Lanshan Port Terminal of the Rizhao Port as an Example

作　　者：付新钰 王伟 王常刚 FU Xinyu;WANG Wei;WANG Changgang(Shandong Bay Transportation Technology Co.,Ltd.,Qingdao 266061,China;China State Construction Port Engineering Group,Ltd.,Qingdao 266061,China)

机构地区：[1]山东港湾交通科技有限公司,山东青岛266061 [2]中建筑港集团有限公司,山东青岛266061

出　　处：《海岸工程》2024年第1期38-49,共12页Coastal Engineering

摘　　要：由于开孔前墙和消浪室具有强扰动作用,所以开孔沉箱结构具有很好的消浪效果。本文通过日照港岚山港区码头开孔沉箱结构的物理模型试验,研究了沉箱不同开孔位置的消浪效果和水动力特征,分析了不同方案的反射系数和越浪量。结果表明:水位对反射系数的影响较大,开孔位置较高的方案,其消浪性能较好,且越浪量较小。选择反射系数和越浪量均较小的设计方案进行了水动力试验,结果表明:水平力最大时对应的浮托力约为最大浮托力的60%;浮托力最大时对应的水平力约为最大水平力的75%;波浪对开孔沉箱的作用主要集中于外壁迎浪侧,内部结构受到的波浪力很小;第二消浪室波浪力小于第一消浪室。The perforated caisson structure has a good wave-dissipating effect due to the strong disturbance of the perforated front wall and the wave-dissipating chambers.Based on the physical modelling tests of perforated caisson in the Lanshan Port Terminal of the Rizhao Port,the wave dissipation effects and hydrodynamic characteristics of the perforated caissons with different hole-opening positions are studied and the reflection coefficients and the overtopping of different perforated caisson schemes are analyzed.The results show that the water level has a greater influence on the reflection coefficient and the scheme with higher hole-opening position has a better wave dissipation effect and a small overtopping.For conducting the hydrodynamic test the scheme that can make both the reflection coefficient and the overtopping small is chosen.The results demonstrate that the floating support force corresponding to the maximum horizontal force is about 60%of the maximum buoyancy force,while the horizontal force corresponding to the maximum floating support force is about 75%of the maximum horizontal force.The action of waves on perforated caisson is mainly concentrated on the wave-facing side of the outer wall,and the internal structure of the caisson is subjected to very little wave force.The wave force in the second wave-dissipating chamber is less than that in the first chamber.

关 键 词：开孔沉箱 反射系数 越浪量 波浪力 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]