带有损伤的圆沉箱靠船墩结构的动力有限元分析  

Dynamic Finite Element Analysis of Pier Structure with Damage

作　　者：戴鹏泉 周晶[1,2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 [2]大连理工大学工程抗震研究所建设工程学部水利工程学院,辽宁大连116024

出　　处：《水利与建筑工程学报》2017年第4期162-167,198,共7页Journal of Water Resources and Architectural Engineering

摘　　要：水运港口码头结构在使用过程中可能受到损伤破坏,研究损伤对码头结构的动力响应的影响有明确的价值。当前对于码头结构损伤的研究普遍集中于高桩码头的结构形式。针对北方某港圆沉箱重力式靠船墩结构,分析了结构易发生损坏的位置。利用ABAQUS有限元软件,采用混凝土损伤塑性(CDP)模型,用Cohesive单元模拟结构的初始损伤。分析计算了结构损伤的存在对结构自振频率、地震动响应的影响,比较了地震动输入方向对特定位置初始损伤发展的影响。根据数值分析结果,得出了损伤会引起结构动力响应呈规律性改变并且特定地震加载方向对结构损伤扩展影响程度不同的结论。The structure of the pier may be damaged during its life cycle. It is worthy to study the influence of damage on the dynamic response of the pier structure. At present,the research on the damage of the pier structure is mainly focused on the structure of the high-piled pier. Thus this article will do some research on the structure of the circular caisson gravity berthing pier structure of a harbor in north China,with the help of ABAQUS CDP model,this article first adopted the cohesive element to simulate the initial damage of the structure then calculated and analyzed the influence of the existence of structural damage on the natural vibration frequency and the earthquake response and the influence of the input direction on the initial damage of the specific position was also compared. According to the results,it turns out that damage can cause structural dynamic response to change regularly and the effect of seismic loading direction on the development of structural damage is different.

关 键 词：重力墩 损伤 CDP Cohesive单元 动力响应 

分 类 号：U656.111[交通运输工程—港口、海岸及近海工程]