摘要
以水中圆柱体为模型,考虑水⁃结构⁃土的相互作用,研究柱体结构在地震和波浪共同作用下的动力响应。采用有限元法将柔性柱体结构离散为欧拉⁃伯努利梁单元,水⁃结构相互作用通过附加质量代替,土⁃结构相互作用通过线性弹簧代替。基于结构自振频率分析,讨论土⁃结构和水⁃结构相互作用对结构自振频率的影响。研究土⁃结构相互作用、地震动水力和波浪力对柱体结构动力响应的影响。
The potential threat to offshore structures in zones of active seismicity is caused by combined earthquake and wave ac⁃tion.In this paper,the dynamic response of a cylinder structure under the combined action of earthquake and wave is studied by tak⁃ing the water-structure-soil interaction into account.The flexible column structure is discretized as the Euler beam unit by the finite element method,water-cylinder interaction is replaced by the added mass,and soil-cylinder interaction is replaced by the linear spring.Based on the analysis of natural vibration frequency,the influence of soil-structure and water-structure interactions on the natural vibration frequency of the structure is analyzed.The effects of soil-structure interaction,seismic hydrodynamic force and wave force on the dynamic response of the submerged cylinder are investigated.
作者
黄义铭
赵密
王丕光
杜修力
刘晶波
HUANG Yi-ming;ZHAO Mi;WANG Pi-guang;DU Xiu-li;LIU Jing-bo(College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China)
出处
《振动工程学报》
EI
CSCD
北大核心
2021年第4期730-738,共9页
Journal of Vibration Engineering
基金
国家自然科学基金资助项目(51708010,51878384,51678015)。
关键词
地震响应
水⁃结构⁃土相互作用
圆形柱体
附加质量
波浪力
earthquake response
water-structure-soil interaction
cylinder structure
added mass
wave force
