摘要
提出一种海洋平台-摇摆墙新型结构。首先,采用导管架式海洋平台的简化模型,在其侧方施加摇摆墙,分析了摇摆墙的刚度对海洋平台-摇摆墙结构自振频率的影响;其次,变换海洋平台的层间刚度,对如何更好地发挥结构整体的耗能性能进行研究。研究结果表明,结构自振频率随着摇摆墙刚度的增大而增大,其第一自振频率收敛于某一定值,其第二自振频率趋于无穷;适当调整层间刚度比可更好的增加海洋平台结构耗能性能,增强海洋平台-摇摆墙结构的抗震能力。
A new kind of offshore platform with rocking wall structure is put forward in this paper. Firstly,a rocking wall is set beside the simplified jacket offshore platform and the influence of the stiffness of the system to the natural frequency of the structure is analyzed; secondly,it is studied how to exert the material performance more adequately by changing ocean platform's story stiffness. The results show that the structural natural frequency increases with rocking wall stiffness,the first natural frequency is converged at a fixed value and the second natural frequency is infinite; the stronger story stiffness could better exert the material performance as well as enhancing seismic capacity.
出处
《土木工程学报》
EI
CSCD
北大核心
2013年第S1期287-291,共5页
China Civil Engineering Journal
基金
山东省优秀中青年科学家科研奖励基金(BS2010HZ008)
山东省高校优秀科研创新团队计划资助
关键词
海洋平台
摇摆墙
刚度
抗震性能
新型结构
offshore platform
rocking wall
stiffness
seismic performance
new-typed structure
