Repeated Diagnostics of Maintained Prestressed Bridge Structure, Interpretation of Changes in Relation to Durability

2016 ◽  
Vol 691 ◽  
pp. 366-375 ◽  
Author(s):  
Jiří Kolísko ◽  
Vítězslav Vacek ◽  
Stanislav Řeháček
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Insulation System ◽  
Real Condition ◽  
The Real ◽  
Reinforced Concrete Bridge

General refurbishment of prestressed reinforced concrete bridge of Pavel Wonka in Pardubice was done in 2006. Within the preparation of refurbishment a full diagnostics of the structure was performed with the assistance of Klokner Institute, including diagnostics of longitudinal prestressed loose cables located in bridge boxes and the real condition of the corrosion was found. New inspection, including water-insulation system and condition of repaired concrete structures was held in 2015. Some of the findings and comparison of the condition before refurbishment and condition after about 10 years of operation are introduced in this article.

scholarly journals Cumulative Damage Evaluation of RC Bridge Piers subjected to Multiple Earthquakes

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Do Hyung Lee ◽  
Byeong Hwa Kim ◽  
Jung Joong Kim ◽  
WooSeok Kim
Keyword(s):  
Reinforced Concrete ◽  
Seismic Analysis ◽  
Ground Motions ◽  
Bridge Piers ◽  
Stiffness Degradation ◽  
Earthquake Ground Motion ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Reinforced Concrete Bridge ◽  
Earthquake Ground Motions

Successive earthquakes of Kocaeli and Duzce within three months indicated that even the survived lifeline structures such as bridges under the former event may have damage or collapse potential under the latter event due to their possible stiffness degradation. It is thus important that a rigorous seismic analysis of such structures should account for the effect of prior earthquake damage. For this purpose, nonlinear seismic analysis of a reinforced concrete bridge structure has been carried out under both single and multiple earthquake ground motions. Behavior and response evaluation of the bridge piers subjected to such motions have been discussed in terms of using both flexure-axial and flexure-shear-axial interaction models. Analytical results show that the stiffness degradation under multiple earthquake ground motions is more pronounced than that under single earthquake ground motion. In addition, comparison of the response without and with shear demonstrates that shear deformation is of significance. The response with shear exhibits the increase in displacement demand and decrease in lateral force carrying capacity, leading to a decrease in energy dissipation capacity. It is concluded that seismic analysis of reinforced concrete bridge structure should account for the effect of multiple earthquake ground motions to assess the demand on such structure properly.

scholarly journals Retrofitting of damaged reinforced concrete bridge structure

2019 ◽  
Vol 18 ◽  
pp. 189-197 ◽  
Author(s):  
Muhammad Fawad ◽  
K. Kalman ◽  
R.A. Khushnood ◽  
Muhammad Usman
Keyword(s):  
Reinforced Concrete ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Reinforced Concrete Bridge
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