Static and Dynamic Behaviours of an 85-year-old Steel Railway Bridge PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
This paper presents the results of an investigation regarding the static and dynamic behaviours of a railway bridge being in service for more than 85 years. The age of the bridge and the recent introduction of a new type of freight train to operate at high speeds (above 95 km/h) made the bridge testing necessary. A full-scale railway bridge test is a complex and expensive undertaking involving cooperation of various departments in a railway organization. This fact limits this type of bridge evaluation to a few very important cases each year. A computerized data acquisitionsystem permitted recording strains and deflections from 21 strain guage circuits and 6 displacement transducers. A special test train was used to study the behaviour of the bridge under controlled loads and speeds. Measurements were also carried out for regular traffic (passenger and freight trains). This paper covers the following topics: (i) instrumentation and test loads; (ii) test results (static and dynamic stresses and deflections); (iii) comparisons of measured static stresses and deflections with theoretical values; and (iv) dynamic characteristics of the tested span (influence of train speed on stresses, deflections, and lateral forces).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
This paper presents the results of an investigation regarding the static and dynamic behaviours of a railway bridge being in service for more than 85 years. The age of the bridge and the recent introduction of a new type of freight train to operate at high speeds (above 95 km/h) made the bridge testing necessary. A full-scale railway bridge test is a complex and expensive undertaking involving cooperation of various departments in a railway organization. This fact limits this type of bridge evaluation to a few very important cases each year. A computerized data acquisitionsystem permitted recording strains and deflections from 21 strain guage circuits and 6 displacement transducers. A special test train was used to study the behaviour of the bridge under controlled loads and speeds. Measurements were also carried out for regular traffic (passenger and freight trains). This paper covers the following topics: (i) instrumentation and test loads; (ii) test results (static and dynamic stresses and deflections); (iii) comparisons of measured static stresses and deflections with theoretical values; and (iv) dynamic characteristics of the tested span (influence of train speed on stresses, deflections, and lateral forces).
Author: Björn Åkesson
Publisher: CRC Press
ISBN: 0203847768
Category : Technology & Engineering
Languages : en
Pages : 170
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Book Description
Many old riveted railway bridges are replaced too soon due to a general lack of knowledge about the expected life span. This indicates the need for more information on fatigue and brittle fracture of riveted bridges. This book unveils extensive research and literature results on riveted bridges' fatigue live and shows how to take fatigue properly i
Author:
Publisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 572
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Book Description
Author: Ladislav Frýba
Publisher: Thomas Telford Publishing
ISBN:
Category : Science
Languages : en
Pages : 340
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Book Description
Provides a survey of the dynamic stresses in railway bridges under moving vehicles. This book investigates both bridge and moving railway vehicles and describes the effect of parameters, such as the speed of vehicles, track irregularities, on the dynamic behaviour of bridges, and is useful for civil and railway engineers and researchers.
Author:
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 484
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Book Description
Author: Jack G. Bouwkamp
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 88
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Book Description
Author: Carlo Pellegrino
Publisher: Springer Nature
ISBN: 3030918777
Category : Technology & Engineering
Languages : en
Pages : 1454
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Book Description
This book gathers the latest advances and innovations in the field of quality control and improvement of bridges and structures, as presented by international researchers and engineers at the 1st Conference of the European Association on Quality Control of Bridges and Structures (EUROSTRUCT 2021), held in Padua, Italy on August 29 – September 1, 2021. Contributions include a wide range of topics such as testing and advanced diagnostic techniques for damage detection; SHM and AI, IoT and machine learning for data analysis of bridges and structures; fiberoptics and smart sensors for long-term SHM; structural reliability, risk, robustness, redundancy and resilience for bridges; corrosion models, fatigue analysis and impact of hazards on infrastructure components; bridge and asset management systems, and decision-making models; Life-Cycle Analysis, retrofit and service-life extension, risk management protocols; quality control plans, sustainability and green materials.
Author: John W. Fisher
Publisher: Wiley-Interscience
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 344
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Book Description
This book provides a detailed review and summary of twenty-two case studies of fracture and fatigue in bridge structures. Its two parts cover cracks formed as a result of low fatigue resistant details, and cracks resulting from unanticipated secondary or displacement induced stresses.
Author:
Publisher:
ISBN:
Category : Building materials
Languages : en
Pages : 560
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Book Description
Author: W. Weibull
Publisher: Elsevier
ISBN: 1483154165
Category : Technology & Engineering
Languages : en
Pages : 322
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Book Description
Fatigue Testing and Analysis of Results discusses fundamental concepts of fatigue testing and results analysis. The book begins with a description of the symbols and nomenclature selected for the present book, mainly those proposed by the ASTM Committee E-9 on Fatigue. Fatigue testing methods are then discussed including routine tests, short-life and long-life tests, cumulative-damage tests, and abbreviated and accelerated tests. Separate chapters cover fatigue testing machines and equipment; instruments and measuring devices; and test pieces used in fatigue testing. The factors affecting test results are considered, including material, types of stressing, test machine, environment, and testing technique. The final two chapters cover the planning of test programs and the presentation of results. Test program planning involves the statistical design of a test series; specification and sampling of test pieces; and choice of test pieces, testing machines, and test conditions. The chief purpose of most fatigue tests is the experimental determination of the relation between the endurance and the magnitude of the applied stress range for the material and the specimen under consideration, and final results can be condensed into a table, graph, or analytical expression.
