大型集装箱码头方沉箱与大圆筒结构受力特点对比  

Comparison of stress characteristics between caisson and cylinder structure of large container terminal

作　　者：李春阳 郭梦圆 徐文强 LI Chun-yang;GUO Meng-yuan;XU Wen-qiang(CCCC-FHDI Engineering Co.,Ltd.,Guangzhou 510290,China)

机构地区：[1]中交第四航务工程勘察设计院有限公司,广东广州510290

出　　处：《水运工程》2022年第10期138-142,158,共6页Port & Waterway Engineering

摘　　要：本文以20万吨级自动化集装箱码头为例,运用大型通用有限元软件,对方沉箱码头和大圆筒码头结构进行整体建模,并对码头上部结构进行局部建模,研究组合载荷下的前趾应力和胸墙内力。研究结果表明:大圆筒码头前趾基床应力大、分布不均匀;而方沉箱码头基床应力小、分布相对均匀。大圆筒码头胸墙跨度大、悬臂长、弯矩大;而方沉箱码头胸墙弯矩小,且整体分布较均匀。对于大型重力式码头,方沉箱结构相比大圆筒结构受力更为合理。Taking the 200,000 ton automated container terminal as an example,this paper uses the large-scale general finite element software to model the caisson and the large cylinder structure as a whole,and to model the superstructure separately,meanwhile,it studies the characteristics of the front toe stress and the internal force of the breast wall under the combined load.The research results reveal that the base bed of the front toe of the large cylinder dock has large stress and uneven distribution,while the base bed of the square caisson dock has little stress and relatively uniform distribution.The chest wall of the large cylinder dock has a large span and a large bending moment of the cantilever,while the chest wall of the square caisson dock has a small bending moment and the overall distribution is relatively uniform.For large gravity docks,the square caisson structure is more rationally stressed than the large cylinder structure.

关 键 词：沉箱结构 圆筒结构 前趾应力 胸墙内力 

分 类 号：U656[交通运输工程—港口、海岸及近海工程]