On the combined effect of topographic irregularities and wave passage on the spatial variation of seismic ground motion

2022 ◽  
Author(s):  
M. G. Durante ◽  
S. J. Brandenberg ◽  
E. Ausilio ◽  
P. Zimmaro
Keyword(s):  
Spatial Variation ◽  
Ground Motion ◽  
Combined Effect ◽  
Seismic Ground Motion ◽  
Wave Passage

Response of Long-Span Concrete Filled Steel Tubular Arch Bridge Subjected to Spatially Varying Ground Motion

2011 ◽  
Vol 243-249 ◽  
pp. 1512-1517
Author(s):  
Zhong Quan Zou ◽  
Li Ping Zhou ◽  
Guo Jing He
Keyword(s):  
Wave Propagation ◽  
Spatial Variation ◽  
Ground Motion ◽  
Dynamic Equilibrium ◽  
Time History ◽  
Correlation Effect ◽  
Arch Bridge ◽  
Spatially Correlated ◽  
Long Span ◽  
Wave Passage

The responses of a long span concrete filled steel tubular (CFST) arch bridge subjected to spatially correlated ground motion are analyzed. By using the stochastic vibration method, the time history of ground motion on the bridge site is simulated. The influences of spatial variation of the ground motion, such as uniform excitation, wave passage effect and partial correlation effect on seismic responses are studied based on the dynamic equilibrium equation for multi-support excitations. The calculated results show that the wave propagation influences the internal forces of the arch significantly. The effect of partial coherency is more complex compared to that of the wave propagation, yet it can be neither neglected. For long-span CFST arch bridges, it is critical to consider the effects of the spatial variation of ground motion.

Spatial variation and conditional simulation of seismic ground motion

2018 ◽  
Vol 16 (10) ◽  
pp. 4399-4426 ◽  
Author(s):  
Gopala Krishna Rodda ◽  
Dhiman Basu
Keyword(s):  
Spatial Variation ◽  
Ground Motion ◽  
Conditional Simulation ◽  
Seismic Ground Motion

Probabilistic estimates of the seismic ground motion hazard in western Saudi Arabia, Kingdom of Saudi Arabia

1987 ◽  
Author(s):  
P.C. Thenhaus ◽  
S.T. Algermissen ◽  
D.M. Perkins ◽  
S.L. Hanson ◽  
W.H. Diment
Keyword(s):  
Saudi Arabia ◽  
Ground Motion ◽  
Kingdom Of Saudi Arabia ◽  
Seismic Ground Motion

Dynamic Characteristics of Base-Isolated Steel Frame under Seismic Ground Motion

2011 ◽  
Vol 255-260 ◽  
pp. 2341-2344
Author(s):  
Mohammad Saeed Masoomi ◽  
Siti Aminah Osman ◽  
Ali Jahanshahi
Keyword(s):  
Ground Motion ◽  
Base Isolation ◽  
Time History ◽  
Steel Structure ◽  
Steel Structures ◽  
Steel Frame ◽  
Nonlinear Time History Analysis ◽  
Seismic Load ◽  
Vector Method ◽  
Seismic Ground Motion

This paper presents the performance of base-isolated steel structures under the seismic load. The main goals of this study are to evaluate the effectiveness of base isolation systems for steel structures against earthquake loads; to verify the modal analysis of steel frame compared with the hand calculation results; and development of a simulating method for base-isolated structure’s responses. Two models were considered in this study, one a steel structure with base-isolated and the other without base-isolated system. The nonlinear time-history analysis of both structures under El Centro 1940 seismic ground motion was used based on finite element method through SAP2000. The mentioned frames were analyzed by Eigenvalue method for linear analysis and Ritz-vector method for nonlinear analysis. Simulation results were presented as time-acceleration graphs for each story, period and frequency of both structures for the first three modes.

Sign in / Sign up

Export Citation Format

Share Document