scholarly journals 3D FEM Analysis of Pounding Response of Bridge Structures at a Canyon Site to Spatially Varying Ground Motions

2013 ◽  
Vol 16 (4) ◽  
pp. 619-640 ◽  
Author(s):  
Kaiming Bi ◽  
Hong Hao ◽  
Nawawi Chouw
Keyword(s):  
Ground Motions ◽  
Fem Analysis ◽  
3D Fem ◽  
Bridge Structures ◽  
Spatially Varying Ground Motions ◽  
Spatially Varying

scholarly journals Experimental and three-dimensional finite element method studies on pounding responses of bridge structures subjected to spatially varying ground motions

2016 ◽  
Vol 20 (1) ◽  
pp. 105-124 ◽  
Author(s):  
Li-Xiang He ◽  
Bipin Shrestha ◽  
Hong Hao ◽  
Kai-Ming Bi ◽  
Wei-Xin Ren
Keyword(s):  
Finite Element ◽  
Ground Motions ◽  
Three Dimensional ◽  
Element Model ◽  
Bridge Structures ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Spatially Varying Ground Motions ◽  
Spatially Varying ◽  
Bridge Models

Pounding and unseating damages to bridge superstructures have been commonly observed in many previous major earthquakes. These damages can essentially attribute to the large closing or opening relative displacement between adjacent structures. This article carries out an experimental study on the pounding responses of adjacent bridge structures considering spatially varying ground motions using a shaking table array system. Two sets of large-scale (1:6) bridge models involving two bridge frames were constructed. The bridge models were subjected to the stochastically simulated ground motions in bi-direction based on the response spectra of Chinese Guideline for Seismic Design of Highway Bridge for three different site conditions, considering three coherency levels. Two types of boundary conditions, that is, the fixed foundation and rocking foundation, were applied to investigate the influence of the foundation type. In addition, a detailed three-dimensional finite element model was constructed to simulate an experimental case. The nonlinear material behavior including strain rate effects of concrete and steel reinforcement is included. The applicability and accuracy of the finite element model in simulating bridge pounding responses subjected to spatially varying ground motions are discussed. The experimental and numerical results demonstrate that non-uniform excitations and foundation rocking can affect the relative displacements and pounding responses significantly.

Contribution of local site-effect on the seismic response of suspension bridges to spatially varying ground motions

2016 ◽  
Vol 10 (5) ◽  
pp. 1233-1251 ◽  
Author(s):  
Suleyman Adanur ◽  
Ahmet C. Altunisik ◽  
Kurtulus Soyluk ◽  
A. Aydin Dumanoglu ◽  
Alemdar Bayraktar
Keyword(s):  
Seismic Response ◽  
Ground Motions ◽  
Site Effect ◽  
Suspension Bridges ◽  
Local Site Effect ◽  
Local Site ◽  
Spatially Varying Ground Motions ◽  
Spatially Varying
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