Investigation of Seismic Performance and Reliability Analysis of Prestressed Reinforced Concrete Bridges

2018 ◽  
Author(s):  
M. Hosseinpour ◽  
M. Celikag ◽  
H. AkbarzadehBengar
Keyword(s):  
Reinforced Concrete ◽  
Reliability Analysis ◽  
Seismic Performance ◽  
Concrete Bridges ◽  
Reinforced Concrete Bridges

scholarly journals Seismic Performance Assessment of Deteriorated Two-Span Reinforced Concrete Bridges

2022 ◽  
Vol 16 (1) ◽  
Author(s):  
Tae-Hoon Kim
Keyword(s):  
Reinforced Concrete ◽  
Performance Assessment ◽  
Seismic Performance ◽  
Evaluation System ◽  
Damage Index ◽  
Concrete Bridges ◽  
Nonlinear Material ◽  
Seismic Performance Assessment ◽  
Simply Supported ◽  
Reinforced Concrete Bridges

AbstractThis paper presents a nonlinear analysis procedure for the seismic performance assessment of deteriorated reinforced concrete bridges using a modified damage index. A finite-element analysis program, RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology), is used to analyze deteriorated two-span simply supported reinforced concrete bridges. The new nonlinear material models for deteriorated reinforced concrete behaviors were proposed, considering corrosion effects as shown in a reduction in reinforcement section and bond strength. A modified damage index aims to quantify the seismic performance level in deteriorated reinforced concrete bridges. Several parameters of two-span simply supported deteriorated reinforced concrete bridge have been studied to determine the seismic performance levels. The newly developed analytical method for assessing the seismic performance of deteriorated reinforced concrete bridges is verified by comparison with the experimental and analytical parameter results.

scholarly journals SAFETY OF REINFORCED CONCRETE BRIDGES WITH SPANS STRUCTURES

2019 ◽  
Vol 15 (6) ◽  
pp. 922-932
Author(s):  
Y. V. Krasnoshchekov
Keyword(s):  
Reinforced Concrete ◽  
Reliability Analysis ◽  
Progressive Collapse ◽  
Dynamic Effect ◽  
Concrete Bridges ◽  
Structural Systems ◽  
Regulatory Requirements ◽  
Design Standards ◽  
Emergency Situations ◽  
Reinforced Concrete Bridges

Introduction. The author presents the results of the reliability analysis of the structural systems in spans of bridges.Materials and methods. The analysis of published materials for the purpose of using them in the design of reinforced concrete bridges, in connection with changes in design standards and tightening of regulatory requirements for safety is made by the author.Results. The results of surveys of slab superstructures indicate the reliability and durability of typical structures operated under normal conditions, but in emergency situations there is a danger of progressive collapse. Therefore, in such conditions, split schemes of multi-span structures are unacceptable. The research tasks to ensure the durability of slab superstructures are formulated. In particular, the task of developing the method of durability calculation in case of one of the pillars failure in the continuous span structure, taking into account the dynamic effect is illustrated.Discussion and conclusion. Changes in design of slab structures of bridge cause the necessity to study the reliability and failure in emergency situations.

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