Download or read book Investigation and Rehabilitation of Prestressed Adjacent Box Beam Bridges written by Ahmad W. Faqiri and published by . This book was released on 1995 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rehabilitation of a Prestressed Concrete Box Beam Bridge written by Curtis James Wood and published by . This book was released on 2006 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: There are a large number of prestressed concrete box beam bridges in service. Currently there are no satisfactory methods to rehabilitate deteriorated prestressed concrete box beam bridges. The standard operating procedure within government agencies is to monitor the deterioration until it is required to replace the entire superstructure of the bridge. This is not a cost effective solution because many of the box beam bridges have a small number of deteriorated beams. The design of a cost effective rehabilitation of a deteriorated prestressed box beam bridge is presented. Several options were considered, including the use of fiber reinforced polymer (FRP) reinforcement, replacing the superstructure, and replacing only the damaged beams, among others. The most cost effective and technically feasible option was determined and presented. The best solution for the rehabilitation of the prestressed concrete bridge was to remove and replace only the damaged beams. Removal and construction sequencing and details were developed that will prevent damage to adjacent box beams and allow the connection of the new box beams to the existing adjacent beams.

Download or read book Adjacent Box Beam Connections Performance and Optimization written by Jiqiu Yuan and published by . This book was released on 2018 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precast prestressed concrete adjacent box beam bridges are widely utilized for short- and medium-span bridges throughout North America. However, a recurring issue with this bridge type is the deterioration of the shear key connection, resulting in substandard performance of the overall bridge system. This research investigated partial- and full-depth connection designs utilizing conventional non-shrink grout and ultra-high performance concrete (UHPC) by conducting full-scale structural testing. Quantitative measures to evaluate the connection performance that may assist in examining similar types of bridges are suggested in this study. A model to calculate the shear force in the connection is proposed, and both the shear and tensile stresses at the connection are analyzed. The findings can be used to assist in the design of connections for this bridge type. The performance of conventionally grouted and UHPC connections are presented and compared. It was found that the adjacent box beam bridges with UHPC connections can be a resilient bridge superstructure system, providing an innovative solution that can advance the state of the practice in bridge construction. This report corresponds to the accompanying TechBrief, Adjacent Box Beam Connections: Performance and Optimization.

Download or read book Condition Assessment and Methods of Abatement of Prestressed Concrete Box beam Deterioration Phase II written by and published by . This book was released on 2009 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side-by-side box-beam bridge constitutes approximately 17 percent of bridges built or replaced annually on public roads and there is a renewed thrust to use this bridge type for rapid construction under the Highway for LIFE program. Further, failure of a fascia girder of Lakeview Drive bridge in Pennsylvania on December 27, 2005 and with a large number of aging bridges in the U.S., highway agencies are concerned about the safety of similar bridges. This project was developed to evaluate the capacity of distressed box-beam through load testing; investigate the impact of distress types identified during phase I of this project on flexure and shear capacities of a beam in a structural system; identify proper materials and methods for long lasting repairs to improve the structural integrity of distressed box-beam bridges; and by performing simulations of the construction process using finite element (FE) models investigate stresses developed in components during each stage of construction and under operation, develop recommendations for changes or modifications to the design procedures, construction process, material specifications, and to the maintenance and repair techniques of side-by-side boxbeam bridge deck. Six tasks were performed in this project ranging from literature review, instrumentation and load testing of a severely deteriorated fascia beam, laboratory investigation of fresh and hardened (durability) properties of shear key grout and repair materials, evaluation of mechanical properties of shear key grout and repair materials, construction process simulation, and evaluation of flexural and shear capacities of distressed beams considering structural system behavior. Recommendations of this project include selection of repair and shear key material, development of comprehensive inspection procedures to assure bridge safety and implementation of the rational design procedure given in the report for improved durability.

Download or read book Adjacent Precast Concrete Box Beam Bridges written by H. G. Russell and published by Transportation Research Board. This book was released on 2009 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: At head of title: National Cooperative Highway Research Program.

Download or read book Condition Assessment and Methods of Abatement of Prestressed Concrete Box beam Deterioration Phase II written by and published by . This book was released on 2009 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side-by-side box-beam bridge constitutes approximately 17 percent of bridges built or replaced annually on public roads and there is a renewed thrust to use this bridge type for rapid construction under the Highway for LIFE program. Further, failure of a fascia girder of Lakeview Drive bridge in Pennsylvania on December 27, 2005 and with a large number of aging bridges in the U.S., highway agencies are concerned about the safety of similar bridges. This project was developed to evaluate the capacity of distressed box-beam through load testing; investigate the impact of distress types identified during phase I of this project on flexure and shear capacities of a beam in a structural system; identify proper materials and methods for long lasting repairs to improve the structural integrity of distressed box-beam bridges; and by performing simulations of the construction process using finite element (FE) models investigate stresses developed in components during each stage of construction and under operation, develop recommendations for changes or modifications to the design procedures, construction process, material specifications, and to the maintenance and repair techniques of side-by-side boxbeam bridge deck. Six tasks were performed in this project ranging from literature review, instrumentation and load testing of a severely deteriorated fascia beam, laboratory investigation of fresh and hardened (durability) properties of shear key grout and repair materials, evaluation of mechanical properties of shear key grout and repair materials, construction process simulation, and evaluation of flexural and shear capacities of distressed beams considering structural system behavior. Recommendations of this project include selection of repair and shear key material, development of comprehensive inspection procedures to assure bridge safety and implementation of the rational design procedure given in the report for improved durability.

Download or read book Restoration of Strength in Adjacent Prestressed Concrete Box Beams written by H. Kent Preston and published by . This book was released on 1987 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Evaluation Repair and Rehabilitation written by A.S. Nowak and published by Springer. This book was released on 1990-10-31 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Baltimore, Maryland, USA, April 30-May 2, 1990

Download or read book Forensic Investigation of Prestressed Concrete Box Beams from LIC 310 Bridge written by Aziz A. Gulistani and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Inspection and Rehabilitation written by Parsons Brinckerhoff and published by John Wiley & Sons. This book was released on 1993-01-12 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than a third of America's bridges are considered substandard--either structurally deficient, functionally obsolete or both. Offers first-rate, practical guidance regarding the inspection and rehabilitation of aging bridge infrastructure including all elements involving structure, various materials and design types. Features seismic retrofit and coverage of environmental issues. Each chapter is written by an authority on the subject. Contains top-quality, detailed line illustrations plus photographs of actual rehab projects.

Download or read book Behavior of Adjacent Prestressed Concrete Box Beam Bridges Containing Ultra High Performance Concrete UHPC Longitudinal Joints written by Ali A. Semendary and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Destructive Testing of a Full scale 43 Year Old Adjacent Prestressed Concrete Box Beam Bridge written by Jonathan M. Huffman and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Response of Skewed Composite Adjacent Box Beam Bridge to Live and Environmental Load Conditions written by Rana O. Mutashar and published by . This book was released on 2020 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary types of deterioration in skewed composite adjacent box beam bridges are cracking in the deck and longitudinal reflective cracking above the shear keys. Possible causes include early age conditions, temperature, and traffic loads. Eliminating or reducing these types of damage is expected to lead to increased service life and reduced maintenance costs for this type of bridge. In this research, a skewed composite adjacent box beam bridge built in November 2015 on Dry Creek Road in Granville, Licking County, Ohio, was instrumented with embedded and attached sensors, including strain gauges, thermocouples, and linear variable differential transformers (LVDTs). These sensors were then monitored during the construction of the bridge on-site, and service, including during arranged field tests with a controlled vehicle load. The bridge was also analyzed using a validated threedimensional finite element model (FEM). Non-uniform temperature through the bridge superstructure and shrinkage cause high tensile strains at the bottom surface of the deck during the early aging of the concrete. The highest measured strains were near the supports and parallel to the skewed angle. Radial cracks were observed at the concrete deck ten months after bridge construction. Measurements made at the box beam fabrication facility showed a lack of uniformity in beam dimensions. Even if the variation in the beam dimensions was within tolerance, there was contact between adjacent beams at isolated spots where thermal expansion led to compressive stress at contact areas. Placing box beams at a slight angle to create a transverse slope and facilitate drainage also creates potential contact areas along the bottom edges of adjacent beams. The FEM showed that under uniform temperature and temperature gradient conditions, the stresses exceeded the concrete design strength at certain contact points along the beams’ length. The skew geometry had a significant effect on the distribution of stresses at contact zones. The failure modes and locations of greatest deterioration identified in the FEM compared well with those found in past research.

Download or read book Structural Condition Assessment and Service Load Performance of Deteriorated Pretensioned Deck Beam Bridges written by Neil Middleton Hawkins and published by . This book was released on 2003 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Adjacent Precast Concrete Box Beam Bridge Systems written by Richard A. Miller (Professional engineer) and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structural Behavior Characteristics of Prestressed Concrete Box beam Bridges written by David A. VanHorn and published by . This book was released on 1969 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Slab Behavior of a Prestressed Concrete Box beam Bridge Bartonsville Bridge written by Anton W. Wegmuller and published by . This book was released on 1971 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: