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Author : Geraldine Soh Sim Cheok
Publisher :
ISBN 13 :
Total Pages : 648 pages
Book Rating : 4.:/5 (153 download)
Download or read book Circular, Spirally Reinforced Concrete Bridge Columns Under Seismic Loads written by Geraldine Soh Sim Cheok and published by . This book was released on 1986 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mahmoud Mohamad Hachem
Publisher :
ISBN 13 :
Total Pages : 484 pages
Book Rating : 4.:/5 (34 download)
Download or read book Seismic Performance of Circular Reinforced Concrete Bridge Columns Under Bidirectional Earthquake Loading written by Mahmoud Mohamad Hachem and published by . This book was released on 2002 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Suriya Prakash Shanmugam
Publisher :
ISBN 13 :
Total Pages : 634 pages
Book Rating : 4.:/5 (614 download)
Download or read book Seismic Behavior of Circular Reinforced Concrete Bridge Columns Under Combined Loading Including Torsion written by Suriya Prakash Shanmugam and published by . This book was released on 2009 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Reinforced concrete (RC) columns of skewed and curved bridges with unequal spans and column heights can be subjected to combined loading including axial, flexure, shear, and torsion loads during earthquakes. The combination of axial loads, shear force, and flexural and torsional moments can result in complex failure modes of RC bridge columns. This study carried out experimental and analytical studies to investigate the seismic performance of circular RC columns under combined loading including torsion. The main variables considered here were (i) the ratio of torsion-to-bending moment (T/M), (ii) the ratio of bending moment-to-shear (M/V) or shear span (H/D), and (iii) the level of detailing for high and moderate seismicity (high or low spiral ratio). In particular, the effects of the spiral reinforcement ratio and shear span on strength and ductility of circular RC columns under combined loading were addressed. In addition, the effects of torsional loading on the bending moment-curvature, ductility, and energy dissipation characteristics were also considered. The analytical investigation examined the development of existing models for flexure and pure torsion. Interaction diagrams between bending, shear and torsional loads were established from a semi-empirical approach. A damage-based design approach for circular RC columns under combined loads was proposed by decoupling damage index models for flexure and torsion. Experimental and analytical results showed that the progression of damage was amplified by an increase in torsional moment. An increase in the transverse spiral reinforcement ratio delayed the progression of damage and changed the torsional-dominated behavior to flexural-dominated behavior under combined flexural and torsional moments"--Abstract, leaf iii.
Author : Mahmoud M. Hachem
Publisher :
ISBN 13 :
Total Pages : 496 pages
Book Rating : 4.:/5 (1 download)
Download or read book Performance of Circular Reinforced Concrete Bridge Columns Under Bidirectional Earthquake Loading written by Mahmoud M. Hachem and published by . This book was released on 2003 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the dynamic testing of 4 circular reinforced concrete bridge columns. The specimens were divided into 2 pairs, with each pair subjected to a different ground motion. Within each pair, one specimen was subjected to one component of the ground motion, while the other was subjected to 2 components. Two analytical studies were carried out for a wide array of column heights, diameters, and axial load intensities. The columns were subjected to large suites of ground motions scaled to match on average the design response spectrum.
Author : Gianmario Benzoni
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (318 download)
Download or read book Seismic Performance of Circular Reinforced Concrete Columns Under Varying Axial Load written by Gianmario Benzoni and published by . This book was released on 1996 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The behavior of four circular reinforced concrete bridge columns, with different axial load regimes, is investigated. The first unit was tested under constant compressive axial load corresponding to an axial load ratio of 0.35. The second specimen was subjected to a constant tensile axial force equivalent to 0.087 axial load ratio. Two specimens were tested under varying regime of axial load, ranging between the two previous load limits, in order to simulate realistic seismic conditions of outer columns of multi-column bents. Extended comparison between experimental and predicted shear response, from different current equations, is provided.
Author : Ravindra Verma
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.:/5 (318 download)
Download or read book Optimization of Seismic Design of Single Column Circular Reinforced Concrete Bridge Piers written by Ravindra Verma and published by . This book was released on 1990 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9780921303152
Total Pages : 12 pages
Book Rating : 4.3/5 (31 download)
Download or read book Seismic Retrofit of Circular Reinforced Concrete Bridge Columns written by and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Yuhao Feng
Publisher :
ISBN 13 :
Total Pages : 187 pages
Book Rating : 4.:/5 (88 download)
Download or read book Numerical Simulation and Analysis of Circular Reinforced Concrete Bridge Columns for Investigating the Effect of Seismic Load History on Longitudinal Bar Buckling written by Yuhao Feng and published by . This book was released on 2013 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Taylor & Francis US
ISBN 13 : 9789054100652
Total Pages : 574 pages
Book Rating : 4.1/5 (6 download)
Download or read book Earthquake Engineer 10th World written by and published by Taylor & Francis US. This book was released on 1992-01-01 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Clay Joshua Naito
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (318 download)
Download or read book Experimental and Computational Evaluation of Reinforced Concrete Bridge Beam-column Connections for Seismic Performance written by Clay Joshua Naito and published by . This book was released on 2001 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuk Hon Chai
Publisher :
ISBN 13 :
Total Pages : 594 pages
Book Rating : 4.:/5 (318 download)
Download or read book Steel Jacketing of Circular Reinforced Concrete Bridge Columns for Enhanced Flexural Performance written by Yuk Hon Chai and published by . This book was released on 1991 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ngan Ha D. Vu
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (318 download)
Download or read book The Seismic Response of Well-confined Circular Reinforced Concrete Columns with Low Aspect Ratios written by Ngan Ha D. Vu and published by . This book was released on 1999 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Trejo
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (91 download)
Download or read book Seismic Performance of Circular Reinforced Concrete Bridge Columns Constructed with Grade 80 Reinforcement written by David Trejo and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project assessed the use of ASTM A706 Grade 80 reinforcing bars in reinforced concrete columns. Grade 80 is not currently allowed in reinforced concrete columns due to lack of information on the material characteristics and column performance. Six half-scale, circular columns were tested: three constructed with Grade 60 reinforcement and three constructed with Grade 80 reinforcement. Designs followed standard design methodologies used by State Highway Agencies (including AASHTO). Results indicate that columns constructed with Grade 80 reinforcement performed similar to columns constructed with conventional ASTM A706 Grade 60 reinforcement. Computational modeling was performed using OpenSees for all six columns. Results indicate that the columns constructed with Grade 80 reinforcement achieved similar resistance and displacement and curvature ductility values when compared with the reference columns constructed with Grade 60 reinforcement. The columns constructed with Grade 60 reinforcement showed larger hysteretic energy dissipation than the columns constructed with Grade 80 reinforcement.
Author : Ravindra Verma
Publisher :
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.0/5 ( download)
Download or read book Assessment of Seismic Response and Steel Jacket Retrofit of Squat Circular Reinforced Concrete Bridge Columns written by Ravindra Verma and published by . This book was released on 1993 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Regan Thomas Potangaroa
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (153 download)
Download or read book Ductility of Spirally Reinforced Concrete Columns Under Seismic Loading written by Regan Thomas Potangaroa and published by . This book was released on 1979 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yuk Hon Chai
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.F/5 ( download)
Download or read book Flexural Retrofit of Circular Reinforced Concrete Bridge Columns by Steel Jacketing written by Yuk Hon Chai and published by . This book was released on 1991 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. J. N. Priestley
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.0/5 ( download)
Download or read book Seismic Shear Strength of Reinforced Concrete Columns written by M. J. N. Priestley and published by . This book was released on 1993 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
