scholarly journals Nonlinear response of bridge piers on inclined pile groups: the role of rocking foundation input motion

2017 ◽  
Vol 199 ◽  
pp. 2330-2335
Author(s):  
S. Carbonari ◽  
M. Morici ◽  
F. Dezi ◽  
G. Leoni
Keyword(s):  
Nonlinear Response ◽  
Bridge Piers ◽  
Pile Groups ◽  
Inclined Pile ◽  
Rocking Foundation ◽  
Input Motion

Soil-structure interaction effects in single bridge piers founded on inclined pile groups

2017 ◽  
Vol 92 ◽  
pp. 52-67 ◽  
Author(s):  
Sandro Carbonari ◽  
Michele Morici ◽  
Francesca Dezi ◽  
Fabrizio Gara ◽  
Graziano Leoni
Keyword(s):  
Soil Structure ◽  
Interaction Effects ◽  
Bridge Piers ◽  
Soil Structure Interaction ◽  
Pile Groups ◽  
Structure Interaction ◽  
Inclined Pile

scholarly journals Seismic response of bridge piers on pile groups for different soil damping models and lumped parameter representations of the foundation

2018 ◽  
Vol 48 (3) ◽  
pp. 306-327 ◽  
Author(s):  
Francisco González ◽  
Luis A. Padrón ◽  
Sandro Carbonari ◽  
Michele Morici ◽  
Juan J. Aznárez ◽  
...  
Keyword(s):  
Seismic Response ◽  
Bridge Piers ◽  
Pile Groups ◽  
Lumped Parameter ◽  
Soil Damping

Role of Plaque Morphology in Altering the Flow Characteristics in Diseased Coronary Artery

2012 ◽  
Author(s):  
Carlos Moreno ◽  
Kiran Bhaganagar
Keyword(s):  
Coronary Artery ◽  
Nonlinear Response ◽  
Flow Characteristics ◽  
Proximal Region ◽  
Patient Specific ◽  
Plaque Morphology ◽  
Mean Velocity ◽  
Peak Location ◽  
The Mean

Patient specific simulations of a single patient based on an accurate representation of the plaque in a diseased coronary artery with 35% stenosis are performed to understand the effect of inlet forcing frequency and amplitude on the wall shear stress (WSS). Numerical simulations are performed with unsteady flow conditions in a laminar regime. The results have revealed that at low amplitudes, WSS is insensitive to forcing frequency and is it in phase with Q. The maximum WSS is observed at the proximal region of the stenosis, and WSS has highest negative values at the peak location of the stenosis. For higher pulsatile amplitude (a > 1.0), WSS exhibits a strong sensitivity with forcing frequencies. At higher forcing frequency the WSS exhibits nonlinear response to the inlet forcing frequency. Furthermore, significant differences in the mean velocity profile are observed during maximum and minimum volumetric flow rates.

Numerical analysis of the deep soil failure mechanism for perimeter pile groups

2022 ◽  
Vol 12 (1) ◽  
pp. 1-26
Author(s):  
M. Watford ◽  
J. Templeman ◽  
Z. Orazalin ◽  
H. Zhou ◽  
A. Franza ◽  
...  
Keyword(s):  
Finite Element ◽  
Failure Mechanism ◽  
Pile Groups ◽  
Deep Soil ◽  
Pile Spacing ◽  
Lateral Capacity ◽  
Soil Failure ◽  
Dimensional Finite Element ◽  
Group Configuration

In this paper, the lateral limiting pressure offered by the deep ‘flow-around’ soil failure mechanism for perimeter (ring) pile groups in undrained soil is explored using two−dimensional finite element modelling. A parametric study investigates the role of group configuration, pile−soil adhesion, group size, pile spacing and load direction on group capacity and corresponding soil failure mechanisms. The finite element output show that the plan group configuration (square or circular) has a negligible influence on lateral capacity for closely spaced perimeter pile groups. When compared to ‘full’ square pile groups with the same number of piles, the present results suggest that for practical pile spacing (≳ two pile diameters), perimeter groups do not necessarily increase capacity efficiency, particularly if the piles are smooth. Nevertheless, perimeter groups are shown to be characterized by both the invariance of their capacity to the direction of loading and their highly uniform load-sharing between piles, which are beneficial features to optimize design.

Linear and nonlinear response of 2-D single carrier dots: Role of impurity perturbations

2007 ◽  
Vol 333 (1) ◽  
pp. 18-25 ◽  
Author(s):  
Ram Kuntal Hazra ◽  
Manas Ghosh ◽  
S.P. Bhattacharyya
Keyword(s):  
Nonlinear Response ◽  
Single Carrier ◽  
Linear And Nonlinear

A simplified method for impedance and foundation input motion of a foundation supported by pile groups and its application

2015 ◽  
Vol 69 ◽  
pp. 301-319 ◽  
Author(s):  
Xuezhang Wen ◽  
Fangyuan Zhou ◽  
Nobuo Fukuwa ◽  
Hongping Zhu
Keyword(s):  
Pile Groups ◽  
Simplified Method ◽  
Input Motion

Expanded superposition method for impedance functions of inclined-pile groups

2015 ◽  
Vol 40 (2) ◽  
pp. 185-206 ◽  
Author(s):  
M. Saitoh ◽  
L. A. Padrón ◽  
J. J. Aznárez ◽  
O. Maeso ◽  
C. S. Goit
Keyword(s):  
Superposition Method ◽  
Pile Groups ◽  
Inclined Pile ◽  
Impedance Functions
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