带卸荷板的大圆筒结构受力特性分析  

Mechanical characteristic analysis of large cylindrical structure with unloading plate

作　　者：郭梦圆 覃杰[1] 陈良志[1] GUO Meng-yuan;QIN Jie;CHEN Liang-zhi(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4期44-48,145,共6页Port & Waterway Engineering

摘　　要：带卸荷板的大圆筒结构在实际工程中受力特性复杂,难以用规范进行计算。运用有限元软件建立带卸荷板的大圆筒结构模型,研究其分别在岸桥荷载、波浪力和堆载土压力作用下的竖向拉力、环向拉力、竖向弯矩和环向弯矩,以及荷载的分布位置,了解其在不同荷载作用下的受力特性。结果表明,岸桥荷载对大圆筒整体结构应力分布影响较小,但对圆筒顶部弯矩影响显著;圆筒顶部受竖向弯矩影响较大,圆筒下部受环向弯矩影响较大;3种荷载作用下,最大竖向及环向弯矩均出现在圆筒与圆筒的相接处,圆筒下部呈波浪侧受拉、土侧受压的现象。The mechanical characteristics of the large cylindrical structure with unloading plates are complex in practical engineering,and thus it is difficult to calculate by codes.Therefore,we build a model for this structure by finite element software to study its vertical tension,circumferential tension,vertical bending moment,circumferential bending moment,and the load distribution positions under the action of the quay crane load,wave force,and loading earth pressure.The results show that the load of a quay crane has little influence on the stress distribution of the whole structure of a large cylinder but has a significant impact on the bending moment at the top of the cylinder.The top of the cylinder is greatly affected by the vertical bending moment,while the lower cylinder is greatly influenced by the circumferential bending moment.Under the three kinds of loads,the maximum vertical and circumferential bending moments occur at the joint between cylinders,and the lower cylinder is under tension on the wave side and compression on the soil side.

关 键 词：带卸荷板的大圆筒 受力特性 荷载 有限元软件 

分 类 号：U656[交通运输工程—港口、海岸及近海工程]