Analysis on Security Appraisa of the Existing Reinforced Concrete Bridges

2014 ◽  
Vol 501-504 ◽  
pp. 1314-1317
Author(s):  
Shan Shan Xu
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Theoretical Analysis ◽  
Research Methods ◽  
Field Test ◽  
Concrete Bridges ◽  
Dynamic Loads ◽  
Reinforced Concrete Bridges ◽  
Static And Dynamic Loads

Safety inspection of the bridge has become particularly important owing to a large number of aging bridges in China, in order to evaluate the safety of a bridge project that has been completed in Harbin, research methods of combining theoretical analysis, numerical simulation and field test is applied, response parameters changes under static and dynamic loads is studied emphatically in this paper.

The Numerical Simulation of Blasting Demolition on the Solid Pier

2013 ◽  
Vol 470 ◽  
pp. 263-266
Author(s):  
Jian Ping Feng ◽  
Ping Ming Huang ◽  
Zheng Zhu ◽  
Di Wang ◽  
Wei Gang Sun
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Concrete Bridges ◽  
Bridge Structure ◽  
Separate Model ◽  
Reinforced Concrete Bridges ◽  
Main Material

Reinforced concrete is the main material of the bridge structure, a lot of reinforced concrete bridges in service are needed to be demolished. Firstly, the numerical simulation of blasting demolition of reinforced concrete was introduced; secondly, the separate model of common nodes of the reinforced concrete solid pier was built by using the software ANSYS/LS-DYAN; lastly, the effect of numerical simulation of blasting demolition on the solid pier was analyzed.

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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