Dynamic impact analysis of long span cable-stayed bridges under moving loads

2008 ◽  
Vol 30 (4) ◽  
pp. 1160-1177 ◽  
Author(s):  
D. Bruno ◽  
F. Greco ◽  
P. Lonetti
Keyword(s):  
Impact Analysis ◽  
Moving Loads ◽  
Dynamic Impact ◽  
Long Span ◽  
Cable Stayed Bridges

scholarly journals Behavior of Asymmetric Cable Stayed Bridge for Long Span

2020 ◽  
Vol 9 (7) ◽  
pp. 600-605
Keyword(s):  
Analytical Investigation ◽  
Traffic Load ◽  
Bridge Structure ◽  
Bending Moments ◽  
Moving Loads ◽  
Modern Times ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Analysis Process ◽  
Cable Stayed Bridges

In the recent years cable stayed bridges have received more attention than any other bridges. As one of the most competitive bridge in modern times, the cable stayed bridge is ideally suitable for long span. Asymmetric cable stayed bridges are the upgrade of conventional cable stayed bridges. Analytical investigation is an important in the study of asymmetric cable stayed bridge. The response of the bridge deck under moving traffic load is very important in the analysis process. Even the slightest deflection may result in the collapse of the bridge structure. Recent reports states that the cable stayed bridges are subjected to wave like vibrations when subjected to moving loads. So the bridge must be analyzed in such a way that its deflections are well under the permissible limits. The parameters like displacements, shear forces, bending moments and percentage of reinforcements were studied in long span asymmetric cable stayed bridge. The asymmetric cable bridge was modeled using SAP2000 software.

Control of Vibrations due to Moving Loads on Suspension Bridges

2006 ◽  
Vol 11 (3) ◽  
pp. 293-318 ◽  
Author(s):  
M. Zribi ◽  
N. B. Almutairi ◽  
M. Abdel-Rohman
Keyword(s):  
Bridge Deck ◽  
Suspension Bridge ◽  
Lyapunov Theory ◽  
Dynamic Responses ◽  
Suspension Bridges ◽  
Control Force ◽  
Moving Loads ◽  
Hydraulic Actuator ◽  
Long Span ◽  
Suspended Cables

The flexibility and low damping of the long span suspended cables in suspension bridges makes them prone to vibrations due to wind and moving loads which affect the dynamic responses of the suspended cables and the bridge deck. This paper investigates the control of vibrations of a suspension bridge due to a vertical load moving on the bridge deck with a constant speed. A vertical cable between the bridge deck and the suspended cables is used to install a hydraulic actuator able to generate an active control force on the bridge deck. Two control schemes are proposed to generate the control force needed to reduce the vertical vibrations in the suspended cables and in the bridge deck. The proposed controllers, whose design is based on Lyapunov theory, guarantee the asymptotic stability of the system. The MATLAB software is used to simulate the performance of the controlled system. The simulation results indicate that the proposed controllers work well. In addition, the performance of the system with the proposed controllers is compared to the performance of the system controlled with a velocity feedback controller.

Structural Performance of Super-Long-Span Cable-Stayed Bridges with Steel and CFRP Hybrid Cables

2019 ◽  
Vol 45 (5) ◽  
pp. 3569-3579
Author(s):  
Shengjiang Sun ◽  
Kuihua Mei ◽  
Yiming Sun ◽  
Bo Li ◽  
Huanzi Huang
Keyword(s):  
Structural Performance ◽  
Long Span ◽  
Cable Stayed Bridges

Seismic fragility assessment of long-span cable-stayed bridges in China

2016 ◽  
Vol 19 (11) ◽  
pp. 1797-1812 ◽  
Author(s):  
Jian Zhong ◽  
Yutao Pang ◽  
Jong-Su Jeon ◽  
Reginald DesRoches ◽  
Wancheng Yuan
Keyword(s):  
Seismic Fragility ◽  
Long Span ◽  
Cable Stayed Bridges
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