Time-variant Reliability of Reinforced Concrete Bridges Under Environmental Attack
Time-variant Reliability of Reinforced Concrete Bridges Under Environmental Attack

Author: Michael Patrick Enright

Publisher:

Published: 1999

Total Pages: 512

ISBN-13: 9780599156609

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In the United States, life-cycle cost analysis is gradually becoming a requirement for bridge design, inspection, repair and replacement decisions. Bridges are designed to function over long periods of time, but can experience changes in both resistance and applied loads which are time-variant. Current reliability-based codes for buildings and bridges are largely limited to individual structural component checks, and do not consider the potential damaged states of a structural system and the ability of the damaged system to continue to carry loads. Furthermore, current codes do not entail the prediction of the failure time of deteriorating structural systems under time-varying loads. Although the need for the application of time-variant system reliability methods to bridge life-cycle cost prediction is becoming increasingly recognized in the U.S., most reliability studies on reinforced concrete bridges do not consider the time dependence of the resistance or post-failure behavior of bridge elements. In this study, the time-variant system reliability of reinforced concrete highway girder bridges subjected to time-dependent load and resistance is investigated. The approach, which is based on combining adaptive importance sampling and numerical integration, is suitable for predicting the reliability of reinforced concrete bridges under environmental stressors such as corrosion. The effects of corrosion initiation time and rate on time-variant strength of reinforced concrete beams are illustrated using Monte Carlo simulation. An existing reinforced concrete T-beam bridge located near Pueblo, Colorado, is investigated. A comparison of reliability estimates for several system models is given, including the influence of correlation among initial girder strengths. Post-failure behavior of components and load redistribution effects are also considered. The influence of inspection updating on time-variant system failure probability is illustrated using Bayesian-based numerical integration. Optimal inspection/repair strategies are included which are based on minimum lifecycle cost within prescribed reliability constraints. The results can be used as a guide for the selection of system models for bridge reliability analysis, identification of critical girders in a bridge system, and for the development of optimal reliability-based maintenance strategies for reinforced concrete highway bridges.

Case Studies in Optimal Design and Maintenance Planning of Civil Infrastructure Systems
Case Studies in Optimal Design and Maintenance Planning of Civil Infrastructure Systems

Author: Dan M. Frangopol

Publisher: ASCE Publications

Published: 1999-01-01

Total Pages: 288

ISBN-13: 9780784474709

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Sponsored by the Structural Engineering Institute of ASCE. This collection contains 19 papers on the optimal design and maintenance planning of civil infrastructure systems such asbridges, buildings, transmission line structures, and nuclear power plants. The authors?coming from Austria, Canada, Denmark, England, Germany, Israel, Japan, Malaysia, Mexico, Switzerland, and the United States?offer case studies that are detailed and research findings that describe applications of life-cycle, reliability and optimization theories to civil infrastructure systems. Topics include: prioritization of bridge maintenance needs; life-cycle optimization of structures; cost-effectiveness optimization for aseismic design criteria of buildings; condition assessment and maintenance of aging structures in critical facilities; condition assessment of bridges; optimization of quality assurance of welded structures; optimal reliability-based bridge maintenance planning; effective reanalysis for damaged structures; optimal design of transmission line structures; optimization and reliability-lifetime oriented design; and optimum policy for civil infrastructure improvement decision making. This book serves as a valuable reference to engineers and managers concerned with design and maintenance planning of civil infrastructure systems.

Bridge Safety, Maintenance and Management in a Life-Cycle Context
Bridge Safety, Maintenance and Management in a Life-Cycle Context

Author: Dan M. Frangopol

Publisher: CRC Press

Published: 2022-02-16

Total Pages: 297

ISBN-13: 1000564517

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During the past two decades, it has been generally acknowledged that life-cycle bridge analysis can be a systematic tool to address efficient and effective bridge management under uncertainty life-cycle management at the bridge network level can lead to an improvement in the allocation of limited financial resources, ensuring the safety and functionality of the bridge network life-cycle management of bridges and bridge networks based on resilience and sustainability can improve their resistance and robustness to extreme events such as earthquakes, tsunamis, floods, and hurricanes bridge management should consider the impact of environmental conditions and climate change This book addresses important concepts and approaches developed recently on bridge safety, maintenance, and management in a life-cycle context. Bridge life-cycle performance and cost analysis, prediction, optimization, and decision making under uncertainty are discussed. The major topics include bridge safety and service life prediction; bridge inspection and structural health monitoring; bridge maintenance; life-cycle bridge and bridge network management; optimum life-cycle bridge management planning; resilience and sustainability of bridges and bridge networksunder hazards; and bridge management considering climate change. By providing practical applications of the presented concepts and approaches, this book can help students, researchers, practitioners, infrastructure owners and managers, and transportation officials to build up their knowledge of life-cycle bridge performance and cost management at bothproject level and network level under various deteriorating mechanisms, hazards and climate change effects.

Life-Cycle Cost and Performance of Civil Infrastructure Systems
Life-Cycle Cost and Performance of Civil Infrastructure Systems

Author: Hyo-Nam Cho

Publisher: CRC Press

Published: 2007-07-18

Total Pages: 332

ISBN-13: 0415413567

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This bookcontains papers covering a wide range of studies on life-cycle performance analysis, design, maintenance, monitoring, management, and cost of civil infrastructure systems. Topics include reliability and optimization as design basis tools, monitoring systems, life-cycle cost analysis and management, bridge management systems, and quality control acceptance criteria. The book also discusses seismic reliability analysis of deteriorating structures, bridge inspection strategies, life-cycle cost analysis of structures on a network level, optimal risk-based design of infrastructures, updating bridge reliability using load monitoring data and statistics of extremes, rehabilitation of bridges, and lifetime analysis and structural repair of civil infrastructure systems.

Computational Stochastic Mechanics
Computational Stochastic Mechanics

Author: P.D. Spanos

Publisher: CRC Press

Published: 1999-11-09

Total Pages: 628

ISBN-13: 9789058090393

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Proceedings of the June, 1998 conference. Seventy contributions discuss Monte Carlo and signal processing methods, random vibrations, safety and reliability, control/optimization and modeling of nonlinearity, earthquake engineering, random processes and fields, damage/fatigue materials, applied prob

Bridge Maintenance, Safety, Management and Life-Cycle Optimization
Bridge Maintenance, Safety, Management and Life-Cycle Optimization

Author: Dan Frangopol

Publisher: CRC Press

Published: 2010-07-07

Total Pages: 744

ISBN-13: 1000006816

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Bridge Maintenance, Safety, Management and Life-Cycle Optimization contains the lectures and papers presented at IABMAS 2010, the Fifth International Conference of the International Association for Bridge Maintenance and Safety (IABMAS), held in Philadelphia, Pennsylvania, USA from July 11 through 15, 2010.All major aspects of bridge maintenance, s

Safety and Security Engineering VII
Safety and Security Engineering VII

Author: Lombardi, M.

Publisher: WIT Press

Published: 2018-01-29

Total Pages: 495

ISBN-13: 1784662119

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Papers presented at the 7th in a series of interdisciplinary conferences on safety and security engineering are contained in this book. The papers include the work of engineers, scientists, field researchers, managers and other specialists involved in one or more of the theoretical and practical aspects of safety and security. Safety and Security Engineering, due to its special nature, is an interdisciplinary area of research and application that brings together in a systematic way, many disciplines of engineering, from the traditional to the most technologically advanced. This volume covers topics such as crisis management, security engineering, natural and man-made disasters and emergencies, risk management, and control, protection and mitigation issues. Specific themes include: Risk analysis, assessment and management; System safety engineering; Incident monitoring; Information and communication security; Disaster management; Emergency response; Critical infrastructure protection; Counter terrorism issues; Human factors; Transportation safety and security; Modelling and experiments; Security surveillance systems; Cyber security / E security; Loss prevention; BIM in Safety and Security.

Hydro-Environmental Analysis
Hydro-Environmental Analysis

Author: James L. Martin

Publisher: CRC Press

Published: 2013-12-04

Total Pages: 5742

ISBN-13: 1138000868

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Focusing on fundamental principles, Hydro-Environmental Analysis: Freshwater Environments presents in-depth information about freshwater environments and how they are influenced by regulation. It provides a holistic approach, exploring the factors that impact water quality and quantity, and the regulations, policy and management methods that are necessary to maintain this vital resource. It offers a historical viewpoint as well as an overview and foundation of the physical, chemical, and biological characteristics affecting the management of freshwater environments. The book concentrates on broad and general concepts, providing an interdisciplinary foundation. The author covers the methods of measurement and classification; chemical, physical, and biological characteristics; indicators of ecological health; and management and restoration. He also considers common indicators of environmental health; characteristics and operations of regulatory control structures; applicable laws and regulations; and restoration methods. The text delves into rivers and streams in the first half and lakes and reservoirs in the second half. Each section centers on the characteristics of those systems and methods of classification, and then moves on to discuss the physical, chemical, and biological characteristics of each. In the section on lakes and reservoirs, it examines the characteristics and operations of regulatory structures, and presents the methods commonly used to assess the environmental health or integrity of these water bodies. It also introduces considerations for restoration, and presents two unique aquatic environments: wetlands and reservoir tailwaters. Written from an engineering perspective, the book is an ideal introduction to the aquatic and limnological sciences for students of environmental science, as well as students of environmental engineering. It also serves as a reference for engineers and scientists involved in the management, regulation, or restoration of freshwater environments.

Bridge Maintenance, Safety, Management, Resilience and Sustainability
Bridge Maintenance, Safety, Management, Resilience and Sustainability

Author: Fabio Biondini

Publisher: CRC Press

Published: 2012-06-21

Total Pages: 4119

ISBN-13: 0203103386

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Bridge Maintenance, Safety, Management, Resilience and Sustainability contains the lectures and papers presented at The Sixth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2012), held in Stresa, Lake Maggiore, Italy, 8-12 July, 2012. This volume consists of a book of extended abstracts (800 pp) Extensive collection of revised expert papers on recent advances in bridge maintenance, safety, management and life-cycle performance, representing a major contribution to the knowledge base of all areas of the field.