scholarly journals Dynamic behaviour of steel–concrete composite under-deck cable-stayed bridges under the action of moving loads

2015 ◽  
Vol 103 ◽  
pp. 260-274 ◽  
Author(s):  
Fernando Madrazo-Aguirre ◽  
Ana M. Ruiz-Teran ◽  
M. Ahmer Wadee
Keyword(s):  
Dynamic Behaviour ◽  
Moving Loads ◽  
Cable Stayed Bridges

Dynamic behaviour of under-deck cable-stayed bridges under the action of moving loads

2014 ◽  
Vol 102 (20) ◽  
pp. 1528-1535 ◽  
Author(s):  
Fernando Madrazo-Aguirre ◽  
Ana M Ruiz-Teran ◽  
M Ahmer Wadee
Keyword(s):  
Dynamic Behaviour ◽  
Moving Loads ◽  
Cable Stayed Bridges

scholarly journals Dynamic Analysis of Cable-Stayed Bridges Affected by Accidental Failure Mechanisms under Moving Loads

2013 ◽  
Vol 2013 ◽  
pp. 1-20 ◽  
Author(s):  
Fabrizio Greco ◽  
Paolo Lonetti ◽  
Arturo Pascuzzo
Keyword(s):  
Failure Mode ◽  
Structural Characteristics ◽  
Sensitivity Analyses ◽  
Moving Loads ◽  
Cable System ◽  
System Sensitivity ◽  
Design Variables ◽  
Mode Characteristics ◽  
Dynamic Amplification ◽  
Cable Stayed Bridges

The dynamic behavior of cable-stayed bridges subjected to moving loads and affected by an accidental failure in the cable suspension system is investigated. The main aim of the paper is to quantify, numerically, the dynamic amplification factors of typical kinematic and stress design variables, by means of a parametric study developed in terms of the structural characteristics of the bridge components. The bridge formulation is developed by using a geometric nonlinear formulation, in which the effects of local vibrations of the stays and of large displacements in the girder and the pylons are taken into account. Explicit time dependent damage laws, reproducing the failure mechanism in the cable system, are considered to investigate the influence of the failure mode characteristics on the dynamic bridge behavior. The analysis focuses attention on the influence of the inertial characteristics of the moving loads, by accounting coupling effects arising from the interaction between girder and moving system. Sensitivity analyses of typical design bridge variables are proposed. In particular, the effects produced by the moving system characteristics, the tower typologies, and the failure mode characteristics involved in the cable system are investigated by means of comparisons between damaged and undamaged bridge configurations.

scholarly journals Dynamic Response of Railway Bridges Subjected to Passing Vehicles

2017 ◽  
Vol 17 (2) ◽  
pp. 79-88
Author(s):  
Milan Moravčík ◽  
Martin Moravčík
Keyword(s):  
Parametric Study ◽  
Dynamic Behaviour ◽  
Railway Bridge ◽  
Moving Loads ◽  
Dynamic Effects ◽  
Railway Bridges ◽  
Moving Vehicle ◽  
Simply Supported ◽  
Speed Up ◽  
The Impact

Abstract This paper discusses some issues related to dynamic effects in railway bridges focussed on the dynamic behaviour of the small and medium span simply supported railway bridges subjected to a series of moving vehicle. Presented parametric study is focused on the dynamic deflection of the simply supported railway bridge of the span Lb = 38 m, due to the series moving loads representing a conventional train with the IC-coaches, with the impact to the speed up to 160 km/h applied in Slovakia.

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.

Sign in / Sign up

Export Citation Format

Share Document