为增大调谐液体阻尼器(TLD)中液体的晃动质量,以获得更优的动力特性,首次提出内置横向圆柱体TLD(TLD embedded a transverse cylinder,简称TLDETC)的概念。结合流体力学原理以及能量方法推导了TLDETC的晃动质量、晃动力、晃动阻尼比以...为增大调谐液体阻尼器(TLD)中液体的晃动质量,以获得更优的动力特性,首次提出内置横向圆柱体TLD(TLD embedded a transverse cylinder,简称TLDETC)的概念。结合流体力学原理以及能量方法推导了TLDETC的晃动质量、晃动力、晃动阻尼比以及晃动频率的表达式,并通过三种设置方案对TLDETC与普通TLD进行了动力特性的对比分析。推导结果表明,TLDETC有效地增大了液体的晃动质量;而分析结果表明,TLDETC具有比普通TLD更优的动力性能。展开更多
The efficiency of a tuned liquid damper(TLD)in controlling the dynamic responses of offshore monopile platforms underseismic excitation has been investigated in this paper.Damping is performed by applying a type of re...The efficiency of a tuned liquid damper(TLD)in controlling the dynamic responses of offshore monopile platforms underseismic excitation has been investigated in this paper.Damping is performed by applying a type of reservoir inside a tower,which is designed optimally via seawater and a monopile body.Hydrodynamic forces due to water surface oscillation inthe reservoir act as resistant forces against structure vibration and displacement.Using ANSYS finite element(FE)software,a monopile structure with the same dimensions as the samples in the Persian Gulf climate was modeled and thenanalyzed in this research using the transient time history analysis related to the records of El-Centro,Kobe,and Tabasearthquakes for seismic investigation.The dynamic responses of the monopile platform with and without TLD werecompared after the completion of FE results.Findings show that using the mentioned TLDs reduced structure displacementby more than 50%based on the earthquake frequency content.展开更多
文摘为增大调谐液体阻尼器(TLD)中液体的晃动质量,以获得更优的动力特性,首次提出内置横向圆柱体TLD(TLD embedded a transverse cylinder,简称TLDETC)的概念。结合流体力学原理以及能量方法推导了TLDETC的晃动质量、晃动力、晃动阻尼比以及晃动频率的表达式,并通过三种设置方案对TLDETC与普通TLD进行了动力特性的对比分析。推导结果表明,TLDETC有效地增大了液体的晃动质量;而分析结果表明,TLDETC具有比普通TLD更优的动力性能。
文摘The efficiency of a tuned liquid damper(TLD)in controlling the dynamic responses of offshore monopile platforms underseismic excitation has been investigated in this paper.Damping is performed by applying a type of reservoir inside a tower,which is designed optimally via seawater and a monopile body.Hydrodynamic forces due to water surface oscillation inthe reservoir act as resistant forces against structure vibration and displacement.Using ANSYS finite element(FE)software,a monopile structure with the same dimensions as the samples in the Persian Gulf climate was modeled and thenanalyzed in this research using the transient time history analysis related to the records of El-Centro,Kobe,and Tabasearthquakes for seismic investigation.The dynamic responses of the monopile platform with and without TLD werecompared after the completion of FE results.Findings show that using the mentioned TLDs reduced structure displacementby more than 50%based on the earthquake frequency content.
