Numerical simulation of a cable-stayed bridge response to blast loads, Part II: Damage prediction and FRP strengthening

2010 ◽  
Vol 32 (10) ◽  
pp. 3193-3205 ◽  
Author(s):  
Hong Hao ◽  
Edmond K.C. Tang
Keyword(s):  
Numerical Simulation ◽  
Blast Loads ◽  
Damage Prediction ◽  
Cable Stayed Bridge ◽  
Frp Strengthening

scholarly journals Effect of blast loading and resulting progressive failure of a cable-stayed bridge

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Ravi Mudragada ◽  
S. S. Mishra
Keyword(s):  
Progressive Failure ◽  
Blast Resistance ◽  
Progressive Collapse ◽  
Building Structures ◽  
Structural Elements ◽  
Blast Loads ◽  
Cable Stayed Bridge ◽  
Bridge Performance ◽  
Cable Stayed Bridges

AbstractMany researchers have carried out experimental and numerical investigations to examine building structures’ response to explosive loads. Studies of bridges subjected to blast loads are limited. Hence, in this study, we present a case study on a cable-stayed bridge, namely, Charles River Cable-Stayed Bridge-Boston, to assess its robustness and resistance against the progressive collapse resulting from localized failure due to blast loads. Three different blast scenarios are considered to interpret the bridge performance to blast loads. To monitor the progressive failure mechanisms of the structural elements due to blast, pre-defined plastic hinges are assigned to the bridge deck. The results conclude that the bridge is too weak to sustain the blast loads near the tower location, and the progressive collapse is inevitable. Hence, to preserve this cable-stayed bridge from local and global failure, structural components should be more reinforced near the tower location. This case study helps the designer better understand the need for blast resistance design of cable-stayed bridges.

The Verification of Geometry Control Method for Cable-Stayed Bridge

2014 ◽  
Vol 1065-1069 ◽  
pp. 992-996
Author(s):  
Can Huang ◽  
Yi Zhi Bu ◽  
Qing Hua Zhang
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Energy Method ◽  
Control Method ◽  
Simulation Analysis ◽  
Beam Element ◽  
Integration Process ◽  
Cable Stayed Bridge ◽  
Construction Procedure ◽  
Element Theory

Based on the energy method and beam-element theory, the nonlinear strain are considered, non-stress length and non-stress curvature of element of geometry control method are introducted in the integration process of stain energy. The static equilibrium equation of the geometry control method is established. Take the impacts of structural geometric profile induced by temporary loads and temperature field during the construction procedure are investigated, the correctness of the geometry control method is verified by the numerical simulation analysis.

Numerical simulation of concrete filled steel tube columns against BLAST loads

2015 ◽  
Vol 92 ◽  
pp. 82-92 ◽  
Author(s):  
Fangrui Zhang ◽  
Chengqing Wu ◽  
Hongwei Wang ◽  
Yun Zhou
Keyword(s):  
Numerical Simulation ◽  
Steel Tube ◽  
Blast Loads ◽  
Concrete Filled Steel Tube

Full-Scale Model Test for Anchorage Zone of Pylon of Cable-Stayed Bridge

2012 ◽  
Vol 238 ◽  
pp. 728-732
Author(s):  
Xiao Lin Yu ◽  
Bu Yu Jia ◽  
Wei Feng Wang ◽  
Quan Sheng Yan
Keyword(s):  
Numerical Simulation ◽  
Stress Distribution ◽  
Full Scale ◽  
Scale Model ◽  
Deformation Condition ◽  
Zone Model ◽  
Construction Technology ◽  
Test Results ◽  
Cable Stayed Bridge ◽  
Cable Force

In this paper, the construction technology for main pylon of cable-stayed bridge is researched through test of full-scale model of anchorage zone of pylon of Guangzhou Bridge. Stress distribution and deformation condition of model under prestressed tendons and cable force are analyzed. Numerical simulation on this anchorage zone model is carried out. By comparing FEM results to the test results, some important conclusions are drawn out and give some advices to the optimum design of the bridge pylon. Parts of the achievements have been applied to actual bridge work and obtained successful engineering experience.

Mechanical Mechanism Analysis of Longitudinal Cracks Appeared in a Large Cable-Stayed Bridge Cable Tower

2012 ◽  
Vol 226-228 ◽  
pp. 1626-1629
Author(s):  
Liang Liang Yang ◽  
Jun Dong ◽  
Jie He ◽  
Tian Liang
Keyword(s):  
Numerical Simulation ◽  
Temperature Effect ◽  
Temperature Stress ◽  
Design Process ◽  
Mechanism Analysis ◽  
Original Design ◽  
Bridge Inspection ◽  
Cable Stayed Bridge ◽  
Bridge Cable ◽  
Longitudinal Cracks

The cable-stayed bridge which has been found longitudinal cracks in tower is taken as the background, combining with the original design information and the results of bridge inspection. The numerical simulation on temperature effect of cable tower has been done with MIDAS/Civil, and the results have the same trend with observed in bridge inspection, indicating that the cracks in tower probably are caused by temperature effect. Then, some suggestions are raised in the end of this paper about how to deal with these cracks. This work could be a valuable reference for similar large cable-stayed bridge. And the temperature stress should be paid more attention in design process to avoid appearance of temperature cracks which affect beauty and durability of structure.

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