scholarly journals Prediction of fatigue life of reinforced concrete bridges using fracture mechanics

2012 ◽  
pp. 3755-3760 ◽  
Author(s):  
M Rocha ◽  
E Brühwiler
Keyword(s):  
Reinforced Concrete ◽  
Fatigue Life ◽  
Fracture Mechanics ◽  
Concrete Bridges ◽  
Reinforced Concrete Bridges

Fatigue Truck Load and Fatigue Life Evaluation of Concrete Bridges for Shaanxi Province

2011 ◽  
Vol 255-260 ◽  
pp. 1299-1302
Author(s):  
Chun Sheng Wang ◽  
Gan Li ◽  
Guo Dong Guan ◽  
Yu Jiao Wang
Keyword(s):  
Reinforced Concrete ◽  
Fatigue Life ◽  
Concrete Bridges ◽  
Shaanxi Province ◽  
Reinforced Concrete Bridges ◽  
Bridge Collapse ◽  
Fatigue Life Evaluation ◽  
Vehicle Loads ◽  
Set Up ◽  
Truck Load

In the past ten years, considerable increases in traffic volume and vehicle loads have caused obviously fatigue damage in existing highway reinforced concrete bridges in China. Some highway reinforced concrete bridges were damaged seriously, leading to the whole bridge collapse sometimes because of overloading and oversize trucks. In order to observe the highway load character in Shaanxi province, truck weigh device is set up in highway pavement to measure axle weights and axle spacing. Based on these data, it can be classified and generalized the different classes of vehicles, and drawn out the simplifying fatigue truck model in Shaanxi province. Furthermore, the fatigue truck model was used to evaluate the fatigue life and service safety of typical concrete bridges.

The Effect of Type and Height of Piers on the Seismic Behavior of Reinforced Concrete Bridges

2019 ◽  
Vol 41 ◽  
pp. 79-87 ◽  
Author(s):  
Mohamed Cherif Djemai ◽  
Mahmoud Bensaibi ◽  
Fatma Zohra Halfaya
Keyword(s):  
Reinforced Concrete ◽  
Structural Parameters ◽  
Strong Motion ◽  
Concrete Bridges ◽  
Geometrical Parameters ◽  
Girder Bridges ◽  
Building Research Institute ◽  
Reinforced Concrete Bridges ◽  
Dynamic Analyses ◽  
Strong Motion Database

Bridges are commonly used lifelines; they play an important role in the economic activity of a city or a region and their role can be crucial in a case of a seismic event since they allow the arrival of the first aid. Reinforced concrete (RC) bridges are worldwide used type view their durability, flexibility and economical cost. In fact, their behavior under seismic loading was the aim of various studies. In the present study the effect of two structural parameters i.e. the height and the type of piers of reinforced concrete bridges on seismic response is investigated. For that reason, different multi-span continuous girder bridges models with various geometrical parameters are considered. Then, non-linear dynamic analyses are performed based on two types of piers which are: multiple columns bent and wall piers with varying heights. In this approach, a serie of 40 ground motions records varying from weak to strong events selected from Building Research Institute (BRI) strong motion database are used including uncertainty in the soil and seismic characteristics. Modelling results put most emphasis on the modal periods and responses of the top pier displacements, they show the influence of the considered parameters on the behavior of such structures and their impact on the strength of reinforced concrete bridges.

ON THE EFFECT OF EFFORT REGULATION BY MEANS OF TEMPORARY CONTINUITYIN SPLIT SPAN STRUCTURES OF STEELREINFORCED CONCRETE BRIDGES

2021 ◽  
pp. 58-61
Author(s):  
I.Yu. Belutsky ◽  
◽  
I.V. Lazarev ◽  
Keyword(s):  
Reinforced Concrete ◽  
Bending Moment ◽  
Concrete Bridges ◽  
Stress Rate ◽  
Steel Reinforced Concrete ◽  
Reinforced Concrete Bridges ◽  
Effort Regulation

Abstract. The publication shows the effectiveness of applying the principle of temporary continuity by combining split span structures into acontinuous couplingusing a temporary joint. The method can be viewed as an option for effort regulation, creating abearing capacity reserveinload-bearing constructions within the span structures of bridges. The calculations provided show the effect on stress rate and bending moment in split span structurescombined into a double-spancontinuous coupling by a temporary joint.

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