摘要
在导管架海洋平台的基础上,提出了一种在海洋平台上施加摇摆柱的海洋平台-摇摆柱组合结构以对海洋平台进行减振控制,提高海洋平台的防灾减灾能力。通过1∶10缩尺试验对冰荷载作用下海洋平台-摇摆柱组合结构进行研究,分析发现海洋平台-摇摆柱结构具有较好的减振效果,以实测冰荷载时程Push3为例,下层甲板峰值加速度和位移依次减小30. 85%和24. 47%,摇摆柱作用效果明显。对海洋平台-摇摆柱结构连接杆应变分析发现,连接杆受力由下到上依次增大,下部连接杆受力最大。结合ABAQUS有限元软件对海洋平台进行建模受力分析发现,试验结果与有限元法模拟结果的误差基本可控制在15%以内,说明ABAQUS可有效模拟海洋平台抗冰激性能,为进一步深入研究提供了一种有效手段。
On the basis of the jacket offshore platform,a novel offshore platform with rocking column was presented to control the vibration of platform and to enhance the ability of disaster prevention and mitigation. A 1∶ 10 reduced scale test was done to analyze the difference of the novel platform and the original platform. The result shows that the offshore platform with rocking column can effectively reduce the dynamic response of platform. Taking Push3 for example,the peak acceleration and displacement of the lower deck of offshore platform with rocking column can reduce30. 85% and 24. 47%,respectively. The effect of rocking column is obvious. The analysis of the stain of the link rods of offshore platform shows that the force of link rods increases from the bottom to the top. ABAQUS was used to simulate the test. The difference between the test and simulation results is below 15%. It suggests that ABAQUS can effectively simulate the ice-induced vibration of offshore platform,and thus to provide an effective means for further research.
作者
刘菲菲
张纪刚
赵铁军
LIU Feifei;ZHANG Jigang;ZHAO Tiejun(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Cooperative In novation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao University of Technology,Qingdao 266033,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2019年第5期63-70,共8页
Journal of Building Structures
基金
国家自然科学基金项目(51678321
51378271)
国家重点研发计划重点专项(2017YFC0703600)
山东省重点研发计划(2018GSF117029)
国家自然科学基金重点国际合作项目(51420105015)
