Structural performance of a parked wind turbine tower subjected to strong ground motions

2016 ◽  
Vol 120 ◽  
pp. 92-102 ◽  
Author(s):  
Atul Patil ◽  
Sungmoon Jung ◽  
Oh-Sung Kwon
Keyword(s):  
Wind Turbine ◽  
Ground Motions ◽  
Structural Performance ◽  
Strong Ground Motions ◽  
Wind Turbine Tower ◽  
Strong Ground

Seismic response analysis of steel–concrete hybrid wind turbine tower

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.

scholarly journals Broadband Strong-Motion Prediction for Future Nankai-Trough Earthquakes Using Statistical Green’s Function Method and Subsequent Building Damage Evaluation

2021 ◽  
Vol 11 (15) ◽  
pp. 7041
Author(s):  
Baoyintu Baoyintu ◽  
Naren Mandula ◽  
Hiroshi Kawase
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Nankai Trough ◽  
Ground Motions ◽  
Building Damage ◽  
Steel Buildings ◽  
Ground Acceleration ◽  
Attenuation Relations ◽  
Strong Ground Motions ◽  
Strong Ground

We used the Green’s function summation method together with the randomly perturbed asperity sources to sum up broadband statistical Green’s functions of a moderate-size source and predict strong ground motions due to the expected M8.1 to 8.7 Nankai-Trough earthquakes along the southern coast of western Japan. We successfully simulated seismic intensity distributions similar to the past earthquakes and strong ground motions similar to the empirical attenuation relations of peak ground acceleration and velocity. Using these results, we predicted building damage by non-linear response analyses and find that at the regions close to the source, as well as regions with relatively thick, soft sediments such as the shoreline and alluvium valleys along the rivers, there is a possibility of severe damage regardless of the types of buildings. Moreover, the predicted damage ratios for buildings built before 1981 are much higher than those built after because of the significant code modifications in 1981. We also find that the damage ratio is highest for steel buildings, followed by wooden houses, and then reinforced concrete buildings.

New method for the estimation of strong ground motions based on the colonial competitive algorithm

2014 ◽  
Vol 18 (5) ◽  
pp. 1403-1410 ◽  
Author(s):  
Abdollah Bagheri ◽  
Gholamreza Ghodrati Amiri ◽  
Jamshid Haghdoust
Keyword(s):  
Ground Motions ◽  
New Method ◽  
Strong Ground Motions ◽  
Competitive Algorithm ◽  
Colonial Competitive Algorithm ◽  
Strong Ground

Nonlinear behaviour of RC frames under repeated strong ground motions

2010 ◽  
Vol 30 (10) ◽  
pp. 1010-1025 ◽  
Author(s):  
George D. Hatzigeorgiou ◽  
Asterios A. Liolios
Keyword(s):  
Ground Motions ◽  
Nonlinear Behaviour ◽  
Strong Ground Motions ◽  
Rc Frames ◽  
Strong Ground

Seismic Control of Base-Isolated Liquid Storage Tanks Subjected to Bi-directional Strong Ground Motions

2021 ◽  
Author(s):  
Sourabh Vern ◽  
M. K. Shrimali ◽  
S. D. Bharti ◽  
T. K. Datta ◽  
Ehsan Noroozinejad Farsangi
Keyword(s):  
Ground Motions ◽  
Storage Tanks ◽  
Strong Ground Motions ◽  
Seismic Control ◽  
Liquid Storage ◽  
Strong Ground
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