scholarly journals Performance-Based Ranking of Existing Road Bridges

2021 ◽  
Vol 11 (10) ◽  
pp. 4398
Author(s):  
Ana Mandić Ivanković ◽  
Dominik Skokandić ◽  
Marija Kušter Marić ◽  
Mladen Srbić
Keyword(s):  
Traffic Safety ◽  
Performance Indicators ◽  
Damage Assessment ◽  
Visual Inspection ◽  
Condition Assessment ◽  
Structural Safety ◽  
Assessment Procedure ◽  
Bridge Condition Assessment ◽  
Existing Bridges

Bridge condition assessment in most European countries is based on visual inspection in combination with damage assessment of bridge components. For adequate bridge management, the assessment needs to be further developed to move from the bridge component level to the system functionality level and finally to the priority ranking level for repairs in the network. Although visual inspection provides only qualitative insights into bridge condition and cannot predict load-carrying capacity, it is still very often the only way to collect data on existing bridges and can provide very important information for evaluating structural safety, traffic safety, durability, and overall bridge condition. Therefore, this paper presents a unique procedure that establishes a relationship between a country-specific bridge condition assessment procedure based on visual inspection and the systematization of key bridge performance indicators developed within the European integrated management approach at three complementary and interrelated levels—component, system, and network levels. The assessment procedure for existing bridges initiates with damage assessment based on visual inspection of bridge components and runs through weighting at component, system, and network levels to the six most important key performance indicators (KPIs) for road bridges, which are organized as graphical and numerical inputs for ranking priority maintenance. These are bridge condition assessment, structural safety, traffic safety, durability indicator, availability, and the importance of the bridge in the network. The procedure is validated on a case study set of five real bridges, using the decision-making process as an example for the small sample size. The case study bridges differ in cross-section, type, and span (which vary from 9.5 to 72 m). The bridges were built between 1958 and 2001 and are located either on state or municipal roads in Croatia. The results, in terms of condition classification and priorities of future interventions within the representative group of bridges, justify the application of the described assessment procedure. Additional digitization efforts could easily implement the described assessment approach at the infrastructure network level.

A practical approach for supporting decisions in bridge condition assessment and monitoring

2019 ◽  
Author(s):  
Dániel Honfi ◽  
John Leander ◽  
Ivar Björnsson ◽  
Oskar Larsson Ivanov
Keyword(s):  
Measurement Techniques ◽  
Condition Assessment ◽  
Illustrative Case ◽  
Public Authorities ◽  
Daily Work ◽  
Rational Decision Making ◽  
Bridge Condition Assessment ◽  
Assessment And Monitoring ◽  
Illustrative Case Study

<p>In this contribution a practical and rational decision-making approach is presented to be applied for common bridges typically managed by public authorities. The authors have developed a model with the intention to be applicable for practical cases for common bridges in the daily work of bride operators responsible for a large number of assets, yet still maintain the principles of more generic frameworks based on probabilistic decision-theory.</p><p>Three main attributes of the verification of sufficiency of structural performance are considered, namely: 1) the level of sophistication of modelling performance, 2) the degree of verification and acceptance criteria in terms of dealing with uncertainties and consequences, 3) the extent of information is obtained and incorporated in the verification.</p><p>The simplicity of the approach is demonstrated through an illustrative case study inspired by practical condition assessment decision problems. It is argued that in practical cases it may be desirable to utilize less advanced methods owing to constraints in resources or lack of reliable data (e.g. based on structural health monitoring or other on-site measurement techniques).</p>

BRIDGE INTEGRITY ASSESSMENT BY CONTINUOUS WAVELET TRANSFORMS

2009 ◽  
Vol 09 (01) ◽  
pp. 11-43 ◽  
Author(s):  
A. ALVANDI ◽  
J. BASTIEN ◽  
E. GRÉGOIRE ◽  
M. JOLIN
Keyword(s):  
Wavelet Transforms ◽  
Damage Assessment ◽  
High Sensitivity ◽  
Assessment Procedure ◽  
Continuous Wavelet ◽  
Continuous Wavelet Transforms ◽  
Integrity Assessment ◽  
Key Characteristics ◽  
Existing Bridges ◽  
Assessment Procedures

The potential of continuous wavelet transforms for damage assessment of existing bridges is investigated herein. Different types of continuous wavelet transforms have been under investigation and the most effective ones have been introduced in a toolbox to automate the damage assessment procedure. In this paper, the performance of the wavelet approach and the influence of different parameters in the damage assessment procedures are studied through two examples: a simply supported beam and a three-span concrete bridge. Applying the wavelet transforms to a structure's static and/or dynamic response showed promising results with regard to localization of structural modification or damage. This paper underlines the high sensitivity of the wavelet analysis to damage intensity and its ability to be applied directly to the damaged data. These key characteristics could lead to this approach becoming one of the best for structural health monitoring of existing bridges in the near future.

Post-Earthquake Damage Assessment Process and Problems in Turkey – A Case Study in Van Province

2013 ◽  
Vol 569-570 ◽  
pp. 310-318
Author(s):  
Didem Gunes Yilmaz ◽  
Jason von Meding ◽  
Gul Kacmaz Erk
Keyword(s):  
Damage Assessment ◽  
Earthquake Damage ◽  
The State ◽  
Assessment Process ◽  
Assessment Procedure ◽  
Assessment Practices ◽  
Earthquake Damage Assessment

This paper presents the current post-earthquake damage assessment procedure in Turkey, and is based on the authors experience in the province of Van after the earthquakes in late 2011. The damage assessments were conducted mainly by the state with the collaboration of the Chamber of Architects in Turkey. It is aimed at explaining how the damage surveys are conducted and what problems occurred during and after the completion of the assessments. The differences and similarities between other countries post-earthquake damage assessment practices are also examined by comparing them and giving some examples.

Condition assessment of several bridges in Sofia based on visual inspection and as-built drawings

2021 ◽  
Author(s):  
Alexander Jiponov ◽  
Lazar Georgiev
Keyword(s):  
Visual Inspection ◽  
Condition Assessment ◽  
Numerical Estimation ◽  
Bridge Management ◽  
Advantages And Disadvantages ◽  
Structural Types ◽  
Different Types ◽  
Bridge Structures ◽  
Existing Bridges ◽  
Condition Assessments

<p>Significant number of bridges in Sofia municipality are in halfway of their exploitation period – they are between 30÷60 years old. At the same time, there is a lack of common methodology for condition assessment of existing bridges (road, railway, pedestrian). Another issue is that there is no Bridge Management Data System, where the information from visual inspections, condition assessments and as-built drawings could be uploaded and used for further operations like regular maintenance activities, prioritization of repair works, planning budget and costs of the relevant authorities. Different structural types of bridge structures in Sofia are described in the paper. The advantages and disadvantages of the considered bridge types with respect to reliability and maintenance are analysed. Several bridges of different types are chosen in order to evaluate their condition based on visual inspection. Possibilities and advantages for implementation of condition assessment rating system based on numerical estimation are discussed.</p>

Urban Railway Bridge Fast Evaluation Based on Cloud Computing

2011 ◽  
Vol 71-78 ◽  
pp. 4501-4505
Author(s):  
Ming Chen ◽  
Wan Zhou
Keyword(s):  
Neural Networks ◽  
Cloud Computing ◽  
Model Updating ◽  
Condition Assessment ◽  
Fe Model ◽  
Railway Bridge ◽  
Fast Evaluation ◽  
Railway Bridges ◽  
Computing Model ◽  
Bridge Condition Assessment

Although modern bridge are carefully designed and well constructed, damage may occur in them due to unexpected causes. Currently, many different techniques have been proposed and investigated in bridge condition assessment. However, evaluation efficiency of condition assessment has not been paid much attention by the researchers. A fast evaluation of the urban railway bridge condition based on the cloud computing is presented. In this paper dynamic FE model and Artificial neural networks technique is applied to model updating. The cloud computing model provides the basis for fast analyses. It was found that when applied to the actually railway bridges, the proposed method provided results similar to those obtained by experts, but can improve efficiency of bridge

scholarly journals A Framework for Assessing Commitment Indicators in Sustainable Development Decisions

2021 ◽  
Vol 13 (9) ◽  
pp. 5234
Author(s):  
Mustafa S. Al-Tekreeti ◽  
Salwa M. Beheiry ◽  
Vian Ahmed
Keyword(s):  
Sustainable Development ◽  
Performance Indicators ◽  
Energy Use ◽  
Capital Projects ◽  
The Sustainable Development ◽  
Corporate Leaders ◽  
Corporate Decisions ◽  
Waste Energy ◽  
Infrastructure Project

Numerous decision support systems have been developed to address the decision-making process in organizations. However, there are no developed mechanisms to track commitment down the line to the decisions made by corporate leaders. This paper is a portion of a study that establishes a framework for a comprehensive metric system to assess commitment to Sustainable Development (SD) decisions down the line in capital projects, and sets the groundwork for further development of performance indicators for SD outcomes. This ultimately leads to investigating the relationship between commitment to corporate decisions and better project performance in SD parameters. Hence, this study explores the literature to extract relevant parameters that reflect the degree of the project participants’ commitment to SD decisions and to develop commitment indicators. The study created then validated an index to track this commitment along the project stages: the Sustainable Development Commitment Tracking Tool (SDCTT). The SDCTT was tested on an infrastructure project case study. In this paper, techniques relevant to the first stage of projects (planning and definition) are presented. The SDCTT is the groundwork for the future development of performance indicators for SD outcomes, and within the postulated model should ultimately contribute towards reducing project waste, energy use, and carbon emissions.

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