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Author : David I. McLean
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (1 download)
Download or read book Seismic Performance and Retrofit of Multi-column Bridge Bents written by David I. McLean and published by . This book was released on 1998 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott Edward Kuebler
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.:/5 (385 download)
Download or read book Evaluation of Seismic Retrofit Strategies for Multi-column Bridge Bents written by Scott Edward Kuebler and published by . This book was released on 1997 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Cole C. McDaniel
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.3/5 (555 download)
Download or read book Seismic Assessment and Retrofit of Existing Multi-column Bent Bridges written by Cole C. McDaniel and published by . This book was released on 2006 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research was to assess the seismic vulnerability of typical pre-1975 WSDOT prestressed concrete multi-column bent bridges. Additional objectives included determining the influence of soil-structure-interaction on the bridge assessment and evaluating the effects of non-traditional retrofit schemes on the global response of the bridges. Overall this research highlighted the vulnerability of non-monolithic bridge decks and shear-dominating bridge columns in pre-1975 WSDOT prestressed concrete multi-column bent bridges as well as the importance of including soil-structure-interaction, calibrating the force/displacement characterization of the columns to experimental test data and detailed modeling of the bridges such as expansion joint/girder interaction. In the end, the seismic assessment of bridges is a cost/efficiency issue. Each bridge is different, therefore, investing in improved analyses up front will enable an efficient use of the limited funds for bridge improvement, resulting in a significant savings overall.
Author : Abu Hena MD Muntasir Billah
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Seismic Performance Evaluation of Multi Column Bridge Bent Retrofitted with Different Alternatives written by Abu Hena MD Muntasir Billah and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 566 pages
Book Rating : 4.:/5 (1 download)
Download or read book Seismic Performance and Retrofitting of Reinforced Concrete Bridge Bents written by and published by . This book was released on 2002 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary available via the World Wide Web as of 8/29/2002 from the Bridge Research and Information Center web site,
Author : Sri Sritharan
Publisher :
ISBN 13 :
Total Pages : 368 pages
Book Rating : 4.F/5 ( download)
Download or read book Seismic Design and Performance of Concrete Multi-column Bents for Bridges written by Sri Sritharan and published by . This book was released on 1997 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the seismic design and performance of two concrete multi-column bents. The first unit contained a precast fully prestressed cap beam while the second unit was designed with a reinforcement concrete cap beam. A mix of conventional and headed reinforcement and mechanical couplers were used in detailing the cap beam of the second unit. Tests were performed with the objective of examining the most efficient cap beam/column details, which were established in previous joint tests, under the maximum feasible shear demand. Tests results showed that both units produced a satisfactory response when subjected to simulated seismic loading.
Author : Cody Jay Cox
Publisher :
ISBN 13 :
Total Pages : 616 pages
Book Rating : 4.:/5 (645 download)
Download or read book Seismic Assessment and Retrofit of Existing Multi-column Bent Bridges written by Cody Jay Cox and published by . This book was released on 2005 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Claudia P. Pulido-Collantes
Publisher :
ISBN 13 :
Total Pages : 1104 pages
Book Rating : 4.:/5 (525 download)
Download or read book Seismic Performance and Retrofitting of Reinforced Concrete Bridge Bents written by Claudia P. Pulido-Collantes and published by . This book was released on 2001 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. K. M. Golam Murtuz
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (123 download)
Download or read book Seismic Performance Design Criteria for Bridge Bent Plastic Hinge Regions written by A. K. M. Golam Murtuz and published by . This book was released on 2020 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research was to quantify the material strain limits for seismic assessment of existing sub-standard reinforced concrete bridge bents considering operational performance design criteria. Limited confidence exists in the current material strain limit state for operational performance criteria due to lack of experimental results considering the typical detailing of Oregon bridges and the cumulative damage effect resulting from an anticipated long-duration Cascadia Subduction Zone (CSZ) event. Component details for bridge bents such as geometry and reinforcing details were determined through a statistical analysis of available bridge drawings built prior to 1990 in the State of Oregon. Three full-scale bridge bent column-footing subassembly specimens were constructed and subjected to reverse cyclic lateral deformations utilizing a traditional loading protocol and a protocol representing the demands expected from a CSZ earthquake. The tests were designed so that variable axial loading could be applied in order to simulate the secondary effects experienced in a column that is part of a multi-column bent during an earthquake event. Material strains along with global and local deformation quantities were measured with a suite of external and internal sensors mounted to and embedded in the specimens. Despite having sub-standard seismic detailing, all three specimens exhibited ductile behavior under reverse cyclic lateral loading, achieving a minimum displacement ductility of 8.0. The obtained results also suggest that the material strain limits currently used for the seismic evaluation of existing bridges in Oregon considering operational performance criteria are conservative, but may still require further experimental validation. Finally, strain limits based on previous research at Portland State University (PSU) were compiled and combined with the results from this study to propose recommended strain limit values.
Author : M. Shahria Alam
Publisher : Springer Nature
ISBN 13 : 3031632761
Total Pages : 463 pages
Book Rating : 4.0/5 (316 download)
Download or read book Proceedings of the 2nd International Conference on Advances in Civil Infrastructure and Construction Materials (CICM 2023), Volume 1 written by M. Shahria Alam and published by Springer Nature. This book was released on with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark Lee Marsh
Publisher :
ISBN 13 :
Total Pages : 390 pages
Book Rating : 4.:/5 (245 download)
Download or read book Effects of Flexural Strength Variations on the Seismic Performance of Reinforced Concrete Multiple Column Bridge Bents written by Mark Lee Marsh and published by . This book was released on 1991 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pedram Farokh
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (13 download)
Download or read book Seismic Vulnerability Assessment of Bridges for Retrofitting and New Design written by Pedram Farokh and published by . This book was released on 2017 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many bridges in North Eastern region of U.S. were designed prior to the adoption of the AASHTO LRFD Guide Specifications for seismic design and may be vulnerable to damage during an earthquake event. This study evaluates the seismic vulnerabilities of those bridges and the structural factors that could affect their performance during a seismic event. The effects of load demands and age deteriorations were also studied. Aging of certain bridge components such as bearings, columns, and bent caps can affect the capacity and demands of these components and accordingly might affect the global behavior and capacity of a bridge during an earthquake event. The concept of fragility curves was studied as a potential tool for evaluating the seismic performance of new bridges, existing bridges and retrofitted bridges for various bridge types subjected to different peak ground acceleration levels. Fragility curves represent the probability of a structure to experience damage levels higher than specific damage state at different peak ground acceleration. Possible retrofit measures for various bridge components were reviewed, and analyzed for their effectiveness. These include superstructure restrainers, stoppers, shear keys, isolation bearings, bent cap strengthening and column jacketing. Existing research shows that the concept of fragility curves can be used to identify bridge vulnerability and level of damage. They can also be used to identify performance and level of damage of various retrofit measures. The effect of aging of certain components such as stiffening and locking of bearings and corrosion of confining steel in columns need to be included when evaluating bridge load demands and capacities. Different types of concrete bridges (typical in North Eastern United States) were analyzed using elastic response spectrum and nonlinear push-over analysis for low, medium-to-high, and high seismicity levels. The effects of pier configuration, continuity between the superstructure and the substructure, and the number of spans were investigated. Analysis results showed that in the longitudinal direction, the displacement demand increased for multi-column bents compared to single-column bents. However, the overall D/C ratio dropped in both transverse and longitudinal directions. The results also showed that in the longitudinal direction the benefit of having multi-column bent over single-column bents in integral bridges is dependent on the seismicity levels. The D/C (demand/capacity) ratio for single column bents in the longitudinal direction was much lower for integral (monolithic) bents compared to non-integral bents. In the transverse directions, the difference in the D/C ratio was not significant. For multi-column bents, the percent change by having integral bents over non-integral bents was dependent on the seismicity levels. For high seismicity zones, the benefits of having Integral bents becomes more significant. This investigation presents guidance on incorporating the effects of aging and retrofitting in the finite element modeling of bridges subjected to various levels of earthquake ground motions.
Author : Laura N. Lowes
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.F/5 ( download)
Download or read book Seismic Behavior and Retrofit of Older Reinforced Concrete Bridge T-joints written by Laura N. Lowes and published by . This book was released on 1995 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of experimental tests investigating the seismic response of reinforced concrete beam-column T-joints was recently completed at the University of California, Berkeley. The evaluated connection was representative of an interior beam- column joint from a multi-column bridge frame built in the late 1950's. Three one-third scale models, representing the as-built connection and two retrofit connections, were tested. The results of this research project are an improved understanding of the seismic behavior of lightly reinforced bridge T-joints as well as verification of a design procedure for retrofitting this type of connection.
Author : M. J. N Priestley
Publisher :
ISBN 13 :
Total Pages : 350 pages
Book Rating : 4.:/5 (318 download)
Download or read book Design Guidelines for Assessment Retrofit and Repair of Bridges for Seismic Performance written by M. J. N Priestley and published by . This book was released on 1992 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kosalram Krishnan
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.3/5 (91 download)
Download or read book Seismic Response of Concrete Bridges written by Kosalram Krishnan and published by . This book was released on 1999 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.3/5 (91 download)
Download or read book NIST Special Publication written by and published by . This book was released on 1994 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohamed Ragab Elbahar
Publisher :
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.:/5 (63 download)
Download or read book Seismic Performance of RC Bridge Column Bents Strengthened by Infill Walls written by Mohamed Ragab Elbahar and published by . This book was released on 2004 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
