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 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 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 Ultra high Performance Concrete Bridge Applications in Ohio written by Elné Barnard and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research reviewed the current and future uses of Ultra-High Performance Concrete (UHPC) for bridge applications in the state of Ohio. Since most designers, owners and contractors are unfamiliar with the material and only a small percentage of all bridges utilize it, UHPC is still considered a relatively new material. Monitoring and understanding its performance in current applications will undoubtedly provide useful insights for future applications. Advantages of UHPC discussed include rapid strength gain that can be utilized in Accelerate Bridge Construction, fiber content which provides post cracking strength, high bond strength which shortens development lengths of reinforcement, and the flowable material which allows UHPC to better penetrate tighter spaces. Disadvantages of UHPC such as material cost, increased labor and time are also discussed. In addition, recommendations for future UHPC applications are provided that would benefit designers, owners and contractors through valuable insight that was gained during these research objectives. The first objective was to review the performance of UHPC in the Sollars Road adjacent prestressed concrete box beam bridge in Fayette County. The design of the UHPC longitudinal joint (shear keys) included dowel bars but eliminated intermediate diaphragms, transverse post-tensioning, and a composite deck. Comparing truck loading data from 2014 shortly after bridge construction was completed and 2017 during this study, the load distribution has improved to some extent and the bridge is responding to loading in a similar manner which implies minimal to no cracking of the UHPC shear keys. This simplified design may be a realistic alternative to solve the typical issue of cracking in the longitudinal joints (shear keys) and associated reflective cracking in composite decks for adjacent prestressed concrete box beam bridges. This improved behavior with UHPC joints may result in longer service life performance of these popular bridge designs. The research also monitored and evaluated the 2017 UHPC closure placement for the Hazelton-Etna road bridge over I-70, since this was a new application of UHPC for Ohio and the United States at the time. Data was collected during placement and during different seasonal periods to monitor daily and seasonal thermal effects. Comparing the data collected from 2017 to 2018 (approximately one year after the UHPC placement), the UHPC is responding in a similar manner which implies no cracking occurred. The final objective of the research was to provide review and advisement to ODOT related to the GAL 160-18.84 UHPC deck panel connections. However, the Department ultimately directed the contractor to construct a traditional cast-in-place deck for reasons unrelated to UHPC. The proposed end panels had a unique connection to deal with a large skew of the bridge alignment. At the time, the project would have been the largest placement of UHPC material in Ohio.
Download or read book Optimal Design and Performance of Longitudinally Spliced Precast prestressed Concrete Bridges written by Pimpida Surakomol and published by . This book was released on 2005 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Flexual Behavior of Carbon Fiber Reinforced Polymer Prestressed Concrete Box beam Bridges written by Saju Sachidanandan and published by . This book was released on 2004 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Behaviour of Ultra high performance Concrete in Precast Concrete Bridge Deck Connections written by Heather Stefaniuk and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the behaviour of ultra-high-performance concrete (UHPC) in the precast concrete bridge deck connections. The experimental program consisted of shear pocket push-out testing and full-scale bridge deck testing. The main objective was to study the UHPC performance in the shear pocket and joint connections. All specimens were statically loaded until failure. The push-out test specimens consisted of two small 45 MPa concrete slabs on either side of a built-up steel section, joined together by shear studs and UHPC shear pockets. There were three 6-stud specimens, two 3-stud specimens and two 0-stud specimens. The 6-stud specimens reached ultimate loads of 2642 kN, 2892 kN, and 3045 kN. The 3-stud specimens reached ultimate loads of 1445 kN and 1674 kN. The 0-stud specimens reached ultimate loads of 4.91 kN and 3.44 kN. The failure modes for the 6-stud and 3-stud specimens were stud failure or concrete crushing, while the 0-stud specimens failed when the UHPC and steel section surface debonded. The push-out specimens were instrumented with LVDTs, pi-gauges and strain gauges to collect data on the displacements, debonding, and shear stud strains throughout testing. The bridge deck testing included a full panel deck (FPD) and jointed panel deck (JPD). The FPD was cast monolithically with regular strength concrete and had UHPC shear pocket connections to the steel support girders. The JPD was cast as two half-size regular strength panels connected together with a UHPC joint, and connected to the steel support girders with UHPC shear pockets. The FPD and JPD reached ultimate loads of 1926 kN and 1878 kN, respectively. Both decks failed by concrete punching under the load point. The bridge decks were instrumented with LVDTs, pi-gauges, and strain gauges to collect data on the deflections, crack widths, steel strains, concrete strains, and shear stud strains throughout testing. The experimental results implied the number and length of the studs in the shear pockets may be reduced. The better performance of the FPD also indicated the circular pockets were superior and the use of UHPC in precast deck connections does not significantly improve the overall performance.
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 Structural Behavior of a Prestressed Concrete Box beam Bridge Hazleton Bridge written by Yan-liang Chen and published by . This book was released on 1970 with total page 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:
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 Overload Testing of an Experimental Prestressed Concrete Bridge written by Robert Mark Barnoff and published by . This book was released on 1977 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behaviour of Ultra high Performance Concrete as a Joint fill Material for Precast Bridge Deck Panels Subjected to Negative Bending written by David Rodrigues Coelho Amorim and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Overload and Ultimate Behavior of a Prestressed Concrete Multi beam Bridge written by Everett Pierce Loppacker Jr and published by . This book was released on 1961 with total page 73 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 Structural Performance of Joints in Precast Concrete Segmental Bridges written by Mourad M. Bakhoum and published by . This book was released on 1989 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
