Seismic behavior analysis of wind turbine tower affected by hydrodynamic pressure based on a simplified calculation model

Seismic behavior of the steel & concrete hybrid structure is studied by Sap2000, including modal analysis, response spectrum analysis and time-history analysis. Also, a simplified calculation model of the steel & concrete hybrid structure is established, and some formulae have been derived from this model, such as the natural frequency, top displacement, shear of both the core tube and the steel frame, on the basis of finite element method of bar system. Those formulae can be used to explain and approximately count the seismic response of steel & concrete hybrid structure.

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Seismic Behavior Analysis of Bank Intake Tower Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.2533 ◽

2012 ◽

Vol 204-208 ◽

pp. 2533-2538

Author(s):

Hai Tao Zhao ◽

Chun Wei Yue ◽

Yi Wang ◽

Yong Jun Luo

Keyword(s):

Dynamic Analysis ◽

Behavior Analysis ◽

Seismic Behavior ◽

Hydrodynamic Pressure ◽

Hydropower Station ◽

Seismic Safety ◽

Static And Dynamic Analysis ◽

High Rise ◽

Tower Structure ◽

Reinforcement Measures

The intake tower of the hydropower station is a high-rise underwater hydraulic building whose seismic safety is enormously important. Taking the effect of foundation and hydrodynamic pressure into account, we apply the ANSYS for the static and dynamic analysis which evaluate the seismic behavior of the intake tower. The result which provides the basis for the improvements shows that the rigidity of intake tower meets the requirement. After taking some engineering reinforcement measures, the strength also meets the requirement.

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A Circuit Model for Lightning Surge of Wind Turbine Tower with an Internal Conductor

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.135.200 ◽

2015 ◽

Vol 135 (3) ◽

pp. 200-206 ◽

Cited By ~ 6

Author(s):

Yoki Ikeda ◽

Naoto Nagaoka ◽

Yoshihiro Baba

Keyword(s):

Wind Turbine ◽

Circuit Model ◽

Wind Turbine Tower

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Seismic Behavior Analysis of Gate Dam

South-to-North Water Diversion and Water Science & Technology ◽

10.3724/sp.j.1201.2011.01044 ◽

2011 ◽

Vol 9 (1) ◽

pp. 44-46 ◽

Cited By ~ 1

Author(s):

Feng-yan GUO ◽

Jin-chao YUE

Keyword(s):

Behavior Analysis ◽

Seismic Behavior

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Simplified calculation model for the effect of nonlinear temperature dependence of thermoelectric properties on the conversion efficiency

Energy ◽

10.1016/j.energy.2020.119745 ◽

2021 ◽

pp. 119745

Author(s):

Xiaomei Sui ◽

Zhe Zhang ◽

Yuqi Zhang ◽

Daochun Xu ◽

Wenbin Li

Keyword(s):

Temperature Dependence ◽

Thermoelectric Properties ◽

Conversion Efficiency ◽

Calculation Model ◽

Nonlinear Temperature Dependence ◽

Nonlinear Temperature ◽

Simplified Calculation

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Seismic response analysis of steel–concrete hybrid wind turbine tower

Journal of Vibration and Control ◽

10.1177/10775463211007592 ◽

2021 ◽

pp. 107754632110075

Author(s):

Junling Chen ◽

Jinwei Li ◽

Dawei Wang ◽

Youquan Feng

Keyword(s):

Wind Turbine ◽

Response Spectrum ◽

Ground Motions ◽

Time History ◽

Seismic Action ◽

Response Spectrum Method ◽

Spectrum Method ◽

Wind Turbine Tower ◽

Ground Types ◽

Nonlinear Time History

The steel–concrete hybrid wind turbine tower is characterized by the concrete tubular segment at the lower part and the traditional steel tubular segment at the upper part. Because of the great change of mass and stiffness along the height of the tower at the connection of steel segment and concrete segment, its dynamic responses under seismic ground motions are significantly different from those of the traditional steel tubular wind turbine tower. Two detailed finite element models of a full steel tubular tower and a steel–concrete hybrid tower for 2.0 MW wind turbine built in the same wind farm are, respectively, developed by using the finite element software ABAQUS. The response spectrum method is applied to analyze the seismic action effects of these two towers under three different ground types. Three groups of ground motions corresponding to three ground types are used to analyze the dynamic response of the steel–concrete hybrid tower by the nonlinear time history method. The numerical results show that the seismic action effect by the response spectrum method is lower than those by the nonlinear time history method. And then it can be concluded that the response spectrum method is not suitable for calculating the seismic action effects of the steel–concrete hybrid tower directly and the time history analyses should be a necessary supplement for its seismic design. The first three modes have obvious contributions on the dynamic response of the steel–concrete hybrid tower.

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