考虑流体-桩-土相互作用的独桩平台波浪响应的TMD控制研究
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摘要
采用调谐质量阻尼器对独桩平台的波浪响应进行控制。在对受控结构的波浪响应进行随机振动分析时 ,考虑了流体 -桩 -土相互作用的影响。通过一算例具体讨论了 TMD的参数对控制效果的影响 ;计算结果表明 ,适当选择 TMD的参数可有效地控制独桩平台的波浪响应 ,因此 TMD在简易平台的振动控制领域有着良好的应用前景
The single plie platform is a kind of simple platform fit for the exploitation of the marginal oil field in shallow sea. In order to improve its reliability under severe sea conditions, the tuned mass damper (TMD) is used to control the wave response of the platform when the wave response equations of the single pile platform with the TMD are founded, the fluid pile soil interaction is consi dered. The random vibration analysis is carried out for the wave response of the controlled structure, so that the expression of control effect of the TMD to the wave response of the single plie platform can be obtained. Then the influence of the TMD's parameters (such as frequency, damping, mass, etc.) on the control effect is also discussed through a calculation sample. The calculation results indicate that when the frequency ration of the TMD to the single plie platform is close to 1.0, the control effect is the best. But the influence of the damping ratio and mass ratio of the TMD to the single pile platform on the control effect is not so evident. Therefore, when the TMD's parameters are chosen correctly, the wave response of the single plie platform can be controlled effectively.
The single plie platform is a kind of simple platform fit for the exploitation of the marginal oil field in shallow sea. In order to improve its reliability under severe sea conditions, the tuned mass damper (TMD) is used to control the wave response of the platform when the wave response equations of the single pile platform with the TMD are founded, the fluid pile soil interaction is consi dered. The random vibration analysis is carried out for the wave response of the controlled structure, so that the expression of control effect of the TMD to the wave response of the single plie platform can be obtained. Then the influence of the TMD's parameters (such as frequency, damping, mass, etc.) on the control effect is also discussed through a calculation sample. The calculation results indicate that when the frequency ration of the TMD to the single plie platform is close to 1.0, the control effect is the best. But the influence of the damping ratio and mass ratio of the TMD to the single pile platform on the control effect is not so evident. Therefore, when the TMD's parameters are chosen correctly, the wave response of the single plie platform can be controlled effectively.
引文
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[4] 杨克己,韩理安.桩基工程[M].北京:人民教育出版社,1997.
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[2] 李广军等.独桩固定式采油平台的研究设计[J].中国海洋平台,1998,(2).
[3] 周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[4] 杨克己,韩理安.桩基工程[M].北京:人民教育出版社,1997.
[5] 任贵永.海洋活动式平台[M].天津:天津大学出版社,1989.
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