Author:
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 66
Book Description
Box Beams for Prestressed Concrete Bridges: Summary of previous research and recommendations for future testing
Author:
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 66
Book Description
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 66
Book Description
Box beams for prestressed concrete bridges -- part I
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Box Beams for Prestressed Concrete Bridges: Test of a model through-voided box beam bridge
Author:
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 206
Book Description
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 206
Book Description
Box Beams for Prestressed Concrete Bridges, Part 3
Author: Pennsylvania. Department of Highways. Bureau of Testing and Research
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
Adjacent Precast Concrete Box Beam Bridges
Author: H. G. Russell
Publisher: Transportation Research Board
ISBN: 0309098300
Category : Box beams
Languages : en
Pages : 86
Book Description
At head of title: National Cooperative Highway Research Program.
Publisher: Transportation Research Board
ISBN: 0309098300
Category : Box beams
Languages : en
Pages : 86
Book Description
At head of title: National Cooperative Highway Research Program.
Concrete Box Beam Risk Assessment and Mitigation
Author: Robert J. Frosch
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages :
Book Description
Adjacent box beam bridges have a history of poor long-term performance including premature deterioration and failures. Leaking joints between box beams allow chloride-laden water to migrate through the superstructure and initiate corrosion. The nature of this deterioration leads to uncertainty of the extent and effect of deterioration on structural behavior. Due to limitations in previous research and understanding of the strength of deteriorated box beam bridges, conservative assumptions are made for the assessment and load rating of these bridges. Furthermore, the design of new box beam bridges, which can offer an efficient and economical solution, is often discouraged due to poor past performance. The objective of this research is to develop recommendations for inspection, load-rating, and design of adjacent box beam bridges. The research is presented in two volumes. Volume 1 focuses on the evolution of box beam design in Indiana to understand the lack of performance and durability. The Indiana Department of Transportation (INDOT) standards and bridge design manuals were reviewed to track the historical development of box beam bridges in the State. Two timelines were produced tracking important updates to box beam design. Adjacent box beam bridges within INDOT's bridge database were also analyzed. Superstructure ratings were compared with bridge age as well as bridge characteristics to highlight possible causes for deterioration. Analyzing the INDOT inventory, data shows that the condition of adjacent box beam bridges may be affected by location, type of wearing surface, and the use of deck membranes. Six bridges were then inspected to identify common deficiencies and specific problems. Exterior beams and beams within the wheel load path tend to have higher levels of deterioration. Furthermore, leaking joints between beams leads to corrosion of reinforcement, ultimately resulting in spalling, fracture of prestressing strands, and loss of structural capacity. Volume 2 focuses on evaluating the capacity of deteriorated adjacent box beams, the development of improved load rating procedures, and new box beam design. Through a series of bridge inspections, deteriorated box beams were identified and acquired for experimental testing. The extent of corrosion was determined through visual inspection, non-destructive evaluation, and destructive evaluation. Non-destructive tests (NDT) included the use of connectionless electrical pulse response analysis (CEPRA), ground penetrating radar (GPR), and half-cell potentials. Deteriorated capacity was determined through structural testing, and an analysis procedure was developed to estimate deteriorated behavior. A rehabilitation procedure was also developed to restore load transfer of adjacent beams in cases where shear key failures are suspected. Based on the understanding of deterioration developed through study of deteriorated adjacent box beam bridges, improved inspection and load rating procedures are provided along with design recommendations for the next generation of box beam bridges.
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages :
Book Description
Adjacent box beam bridges have a history of poor long-term performance including premature deterioration and failures. Leaking joints between box beams allow chloride-laden water to migrate through the superstructure and initiate corrosion. The nature of this deterioration leads to uncertainty of the extent and effect of deterioration on structural behavior. Due to limitations in previous research and understanding of the strength of deteriorated box beam bridges, conservative assumptions are made for the assessment and load rating of these bridges. Furthermore, the design of new box beam bridges, which can offer an efficient and economical solution, is often discouraged due to poor past performance. The objective of this research is to develop recommendations for inspection, load-rating, and design of adjacent box beam bridges. The research is presented in two volumes. Volume 1 focuses on the evolution of box beam design in Indiana to understand the lack of performance and durability. The Indiana Department of Transportation (INDOT) standards and bridge design manuals were reviewed to track the historical development of box beam bridges in the State. Two timelines were produced tracking important updates to box beam design. Adjacent box beam bridges within INDOT's bridge database were also analyzed. Superstructure ratings were compared with bridge age as well as bridge characteristics to highlight possible causes for deterioration. Analyzing the INDOT inventory, data shows that the condition of adjacent box beam bridges may be affected by location, type of wearing surface, and the use of deck membranes. Six bridges were then inspected to identify common deficiencies and specific problems. Exterior beams and beams within the wheel load path tend to have higher levels of deterioration. Furthermore, leaking joints between beams leads to corrosion of reinforcement, ultimately resulting in spalling, fracture of prestressing strands, and loss of structural capacity. Volume 2 focuses on evaluating the capacity of deteriorated adjacent box beams, the development of improved load rating procedures, and new box beam design. Through a series of bridge inspections, deteriorated box beams were identified and acquired for experimental testing. The extent of corrosion was determined through visual inspection, non-destructive evaluation, and destructive evaluation. Non-destructive tests (NDT) included the use of connectionless electrical pulse response analysis (CEPRA), ground penetrating radar (GPR), and half-cell potentials. Deteriorated capacity was determined through structural testing, and an analysis procedure was developed to estimate deteriorated behavior. A rehabilitation procedure was also developed to restore load transfer of adjacent beams in cases where shear key failures are suspected. Based on the understanding of deterioration developed through study of deteriorated adjacent box beam bridges, improved inspection and load rating procedures are provided along with design recommendations for the next generation of box beam bridges.
Load Testing of Bridges
Author: Eva Lantsoght
Publisher: CRC Press
ISBN: 0429556489
Category : Technology & Engineering
Languages : en
Pages : 429
Book Description
Load Testing of Bridges, featuring contributions from almost fifty authors from around the world across two interrelated volumes, deals with the practical aspects, the scientific developments, and the international views on the topic of load testing of bridges. Volume 13, Load Testing of Bridges: Proof Load Testing and the Future of Load Testing, focuses first on proof load testing of bridges. It discusses the specific aspects of proof load testing during the preparation, execution, and post-processing of such a test (Part 1). The second part covers the testing of buildings. The third part discusses novel ideas regarding measurement techniques used for load testing. Methods using non-contact sensors, such as photography- and video-based measurement techniques are discussed. The fourth part discusses load testing in the framework of reliability-based decision-making and in the framework of a bridge management program. The final part of the book summarizes the knowledge presented across the two volumes, as well as the remaining open questions for research, and provides practical recommendations for engineers carrying out load tests. This work will be of interest to researchers and academics in the field of civil/structural engineering, practicing engineers and road authorities worldwide.
Publisher: CRC Press
ISBN: 0429556489
Category : Technology & Engineering
Languages : en
Pages : 429
Book Description
Load Testing of Bridges, featuring contributions from almost fifty authors from around the world across two interrelated volumes, deals with the practical aspects, the scientific developments, and the international views on the topic of load testing of bridges. Volume 13, Load Testing of Bridges: Proof Load Testing and the Future of Load Testing, focuses first on proof load testing of bridges. It discusses the specific aspects of proof load testing during the preparation, execution, and post-processing of such a test (Part 1). The second part covers the testing of buildings. The third part discusses novel ideas regarding measurement techniques used for load testing. Methods using non-contact sensors, such as photography- and video-based measurement techniques are discussed. The fourth part discusses load testing in the framework of reliability-based decision-making and in the framework of a bridge management program. The final part of the book summarizes the knowledge presented across the two volumes, as well as the remaining open questions for research, and provides practical recommendations for engineers carrying out load tests. This work will be of interest to researchers and academics in the field of civil/structural engineering, practicing engineers and road authorities worldwide.
Box Beams for Prestressed Concrete Bridges: Through-voided and conventional box beams subjected to combined bending and torsion
Author:
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 140
Book Description
Publisher:
ISBN:
Category : Box beams
Languages : en
Pages : 140
Book Description
Inelastic Analysis of Prestressed Concrete Spread Box Beam Bridges
Author: Terry D. Hand
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages : 444
Book Description
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages : 444
Book Description
Theoretical Analysis of Load Distribution in Prestressed Concrete Box-beam Bridges
Author: Daryoush Motarjemi
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages : 312
Book Description
Publisher:
ISBN:
Category : Box girder bridges
Languages : en
Pages : 312
Book Description