Assessment Of Seismic Response And Steel Jacket Retrofit Of Squat Circular Reinforced Concrete Bridge Columns PDF Download
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Author | : Ravindra Verma |
Publisher | : |
Total Pages | : 820 |
Release | : 1993 |
Genre | : |
ISBN | : |
Download Assessment of Seismic Response and Steel Jacket Retrofit of Squat Circular Reinforced Concrete Bridge Columns Book in PDF, ePub and Kindle
Author | : Konstantinos G. Megalooikonomou |
Publisher | : Cambridge Scholars Publishing |
Total Pages | : 387 |
Release | : 2019-02-27 |
Genre | : Technology & Engineering |
ISBN | : 1527530361 |
Download Seismic Assessment and Retrofit of Reinforced Concrete Columns Book in PDF, ePub and Kindle
Reinforced concrete columns play a very important role in structural performance. As such, it is essential to apply a suitable analytical tool to estimate their structural behaviour considering all failure mechanisms such as axial, shear, and flexural failures. This book highlights the development of a fiber beam-column element accounting for shear effects and the effect of tension stiffening through reinforcement-to-concrete bond, along with the employment of suitable constitutive material laws.
Author | : Yuk Hon Chai |
Publisher | : |
Total Pages | : 594 |
Release | : 1991 |
Genre | : Bridges |
ISBN | : |
Download Steel Jacketing of Circular Reinforced Concrete Bridge Columns for Enhanced Flexural Performance Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 12 |
Release | : 1990 |
Genre | : |
ISBN | : 9780921303152 |
Download Seismic Retrofit of Circular Reinforced Concrete Bridge Columns Book in PDF, ePub and Kindle
Inadequate flexural strength and ductility or shear strength of concrete bridge columns has resulted in collapse or severe damage of a number of California bridges in recent moderate earthquakes. In general, these bridges were designed prior to the new seismic design methods which were implemented in the mid-seventies. Bridges constructed in accordance with the new design methods have performed well in recent earthquakes. However, the large number of older bridges that are in service, particularly freeway overpasses designed and constructed in the 1950s and 1970s, are now recognized to have substandard design details and to constitute a cause for major concern. This paper reports the results of a theoretical and experimental program investigating retrofit techniques for circular columns by encasing the critical regions within a steel jacket. The jacket is bonded to the column using grout. Results from six large-scale column tests show that the casing acts efficiently as confinement reinforcement, enabling a displacement ductility factor of greater than 6 to be achieved. The casing also inhibits bond failures at the laps of longitudinal reinforcement in the critical regions of the column by restraining the dilation and spalling of the cover concrete which degenerates into bond failure. Comparisons of 'as-built' and retrofitted columns are presented, and experimental strengths and ductilities are compared with analytical predictions. For the covering abstract of the Conference see IRRD Abstract no. 807839.
Author | : M. J. N. Priestley |
Publisher | : |
Total Pages | : 132 |
Release | : 1993 |
Genre | : Bridges |
ISBN | : |
Download Seismic Shear Strength of Reinforced Concrete Columns Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1998 |
Genre | : |
ISBN | : |
Download Seismic Evaluation and Retrofit of Existing Reinforced Concrete Bridge Columns Book in PDF, ePub and Kindle
Author | : Jacques Sarrazin |
Publisher | : |
Total Pages | : 336 |
Release | : 2004 |
Genre | : University of Ottawa theses |
ISBN | : |
Download A Comparative Analysis of Seismic Retrofit Techniques for Reinforced Concrete Bridge Columns Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 462 |
Release | : 2004 |
Genre | : Concrete |
ISBN | : |
Download ACI Structural Journal Book in PDF, ePub and Kindle
Author | : Sean McGuiness |
Publisher | : |
Total Pages | : 139 |
Release | : 2021 |
Genre | : Bridges |
ISBN | : |
Download Experimental Characterization of Steel Jacket Retrofitted Reinforced Concrete Bridge Column Behavior in Cascadia Subduction Zone Earthquakes Book in PDF, ePub and Kindle
Research on seismic retrofitting of Reinforced Concrete (RC) bridge columns in the United States (U.S.) was motivated by damage observed following the 1971 San Fernando, 1989 Loma Prieta, and 1994 Northridge earthquakes of California. The research resulted in a retrofitting procedure that consisted of installing steel jackets around RC bridge columns to enhance the lateral deformation capacity. Although the research focused on the development of this retrofit strategy for bridge columns in California, the Washington State Department of Transportation (WSDOT) implemented the program in 1991. Unlike the strike-slip faults in California, seismicity in western Washington is generally dominated by the Cascadia Subduction Zone fault. The 1964 Alaska, U.S., 2010 Maule, Chile and 2011 Tohoku, Japan are examples of mega-thrust long duration earthquakes emanating from a subduction zone fault and producing ground motions with longer durations of strong shaking than strike-slip faults. The research conducted in this study was motivated by the need to assess performance of the existing retrofit strategy when subjected to the expected demands of subduction zone earthquakes. The research conducted herein was an experimental study on the behavior of steel jacket retrofitted bridge columns subjected to demands from long duration earthquakes. Six reduced scale column specimens were designed, constructed, and tested as cantilevers. WSDOT's inventory was characterized to inform the values used for the column parameters, such that the six columns were intended to reasonably cover the range of values for critical parameters. Five of six tests utilized a modified fully reversed-cyclic lateral loading protocol to include additional cycles characteristic of long duration earthquakes. The sixth test used an earthquake protocol, obtained from the response of a single degree of freedom model to a synthetic Cascadia Subduction Zone ground motion in western Washington. Study results indicated stable drifts, including minimal pinching in the load-displacement response indicative of favorable hysteretic energy dissipation, at drifts in excess of the 4\\% expectation set forth in the steel jacket retrofit design guidelines. Total deformation was primarily a result of longitudinal reinforcement bond slip and elongation at the footing-column interface with strength degradation due to low-cycle fatigue fracture.
Author | : Jin-Guang Teng |
Publisher | : Taylor & Francis |
Total Pages | : 998 |
Release | : 2001-11-15 |
Genre | : Technology & Engineering |
ISBN | : 9780080439457 |
Download FRP Composites in Civil Engineering Book in PDF, ePub and Kindle
This Proceedings contains the papers presented at the International Conference on FRP Composites in Civil Engineering, held in Hong Kong, China, on 12-15 December 2001. The papers, contributed from 24 countries, cover a wide spectrum of topics and demonstrate the recent advances in the application of FRP (Fibre-reinforced polymer) composites in civil engineering, while pointing to future directions of research in this exciting area.