A new average response spectrum method for linear response analysis of structures to spatial earthquake ground motions

2006 ◽  
Vol 28 (13) ◽  
pp. 1835-1842 ◽  
Author(s):  
Liang Su ◽  
Shi Lin Dong ◽  
Shiro Kato
Keyword(s):  
Linear Response ◽  
Response Spectrum ◽  
Ground Motions ◽  
Response Analysis ◽  
Average Response ◽  
Response Spectrum Method ◽  
Earthquake Ground Motions ◽  
Spectrum Method

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.

Seismic Response Analysis of Long Span Cable-Stayed Bridge by Response Spectrum Method

2012 ◽  
Vol 204-208 ◽  
pp. 1992-1996 ◽  
Author(s):  
Min Chao Jin ◽  
Bao Fu Wang ◽  
Zhong Ren Feng ◽  
Xiong Jiang Wang
Keyword(s):  
Response Spectrum ◽  
Vertical Component ◽  
Vertical Direction ◽  
Longitudinal Direction ◽  
Response Analysis ◽  
Response Spectrum Method ◽  
Cable Stayed Bridge ◽  
Spectrum Method ◽  
Long Span ◽  
Significant Difference

Based on response spectrum method, the seismic behavior of a long span cable-stayed bridge is investigated through three dimensional finite element model established by ANSYS. By calculating the cumulative effective mass factors of the bridge, the minimum number of modes used for modal superposition analysis is obtained. Design acceleration response spectrums under two probabilities are used in the analysis. The response spectrums are input in the bridge longitudinal direction, vertical direction, transverse direction and combined horizontal and vertical directions. Displacements and internal forces results show that vertical component of the ground motion greatly influences the response of the bridge and there is significant difference between the results of the two probabilities.

Non-linear response spectrum method for three-dimensional structures

1988 ◽  
Vol 16 (6) ◽  
pp. 885-900 ◽  
Author(s):  
Saravanapavananthan Sutharshana ◽  
William McGuire
Keyword(s):  
Linear Response ◽  
Response Spectrum ◽  
Three Dimensional ◽  
Response Spectrum Method ◽  
Spectrum Method ◽  
Non Linear
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