转角阻尼器对海洋平台-摇摆墙体系抗振分析
发布时间：2019-03-17 16:41
【摘要】：在海洋平台摇摆墙体系基础上,提出在海洋平台和摇摆墙之间刚性连接杆的铰接点处安装粘弹性转角阻尼器的减振措施,对海洋平台进行进一步减振控制。对粘弹性转角位移阻尼器的刚度和阻尼参数进行了优化分析,可知阻尼器的阻尼与刚度在结构减振中起到了十分重要的作用,且存在特定范围内的优化值。以JZ20-2北高点井口平台为例,利用ANSYS进行地震荷载作用和实测挤压冰荷载下的仿真分析,研究了粘弹性转角阻尼器在海洋平台和摇摆墙之间刚性连接杆铰接点处的不同安装方式,对比分析减振效果。结果表明,在该体系刚性连接杆的铰接点处安装粘弹性转角阻尼器能显著降低结构的振动反应,连接杆右侧安装粘弹性转角阻尼器的方式为减振效果最佳方式。
[Abstract]:On the basis of swinging wall system of offshore platform, the vibration reduction measures of installing viscoelastic angle damper at the hinge point of rigid connecting rod between offshore platform and swinging wall are put forward to further control the vibration of offshore platform. The stiffness and damping parameters of viscoelastic angular displacement damper are optimized and analyzed. The results show that the damping and stiffness of damper play a very important role in structural vibration reduction, and there is an optimization value in a specific range. Taking the north high point wellhead platform of JZ20-2 as an example, the simulation analysis of seismic load and actual compression ice load is carried out by using ANSYS. In this paper, the different installation modes of viscoelastic angle damper at the hinge point of rigid connecting rod between offshore platform and swing wall are studied, and the effect of vibration reduction is compared and analyzed. The results show that the vibration response of the structure can be significantly reduced by installing viscoelastic angular damper at the hinge point of the rigid connecting rod of the system, and the optimal way to reduce the vibration is to install the viscoelastic angular damper on the right side of the connecting rod.
【作者单位】： 青岛理工大学土木工程学院;蓝色经济区工程建设与安全协同创新中心;
【基金】：国家自然科学基金资助项目(51378271) 中国博士后科学基金资助项目(2013M530307) 山东省博士后创新项目专项资金资助项目(201302020)
【分类号】：P75;TU352.11
[Abstract]:On the basis of swinging wall system of offshore platform, the vibration reduction measures of installing viscoelastic angle damper at the hinge point of rigid connecting rod between offshore platform and swinging wall are put forward to further control the vibration of offshore platform. The stiffness and damping parameters of viscoelastic angular displacement damper are optimized and analyzed. The results show that the damping and stiffness of damper play a very important role in structural vibration reduction, and there is an optimization value in a specific range. Taking the north high point wellhead platform of JZ20-2 as an example, the simulation analysis of seismic load and actual compression ice load is carried out by using ANSYS. In this paper, the different installation modes of viscoelastic angle damper at the hinge point of rigid connecting rod between offshore platform and swing wall are studied, and the effect of vibration reduction is compared and analyzed. The results show that the vibration response of the structure can be significantly reduced by installing viscoelastic angular damper at the hinge point of the rigid connecting rod of the system, and the optimal way to reduce the vibration is to install the viscoelastic angular damper on the right side of the connecting rod.
【作者单位】： 青岛理工大学土木工程学院;蓝色经济区工程建设与安全协同创新中心;
【基金】：国家自然科学基金资助项目(51378271) 中国博士后科学基金资助项目(2013M530307) 山东省博士后创新项目专项资金资助项目(201302020)
【分类号】：P75;TU352.11
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