Author: Suhas S. ChandanePublisher:
ISBN:
Category : Bridges, Concrete
Languages : en
Pages : 324
Book Description
Static and Dynamic Performance of RC Bridge Bents with Architectural-flared Columns
Author: Suhas S. ChandanePublisher:
ISBN:
Category : Bridges, Concrete
Languages : en
Pages : 324
Book Description
Next Generation of Bridge Columns for Accelerated Bridge Construction in High Seismic Zones
Author: Mostafa TazarvPublisher:
ISBN:
Category : Columns, Concrete
Languages : en
Pages : 406
Book Description
Longitudinal bar debonding allowed spread of yielding and prevented premature failure of reinforcements in UHPC-filled duct connections and grouted coupler column pedestal. The SMA-reinforced ECC column showed superior seismic performance compared to a conventional column in which the plastic hinge damage was limited to only ECC cover spalling even under 12% drift ratio cycles. The column residual displacements were 79% lower than CIP residual displacements on average due to the superelastic NiTi SMA longitudinal reinforcement, and higher base shear capacity and higher displacement capacity were observed. The analytical modeling methods were simple and sufficiently accurate for general design and analyses of precast components proposed in the present study. The proposed symmetrical material model for reinforcing NiTi superelastic SMA was found to be a viable alternative to the more complex asymmetrical model.
Stability of Bridge Column Rebar Cages During Construction
Author: J. Camilo Builes-MejiaPublisher:
ISBN:
Category : Columns, Concrete
Languages : en
Pages : 260
Book Description
Effects of Confinement and Flares on the Seismic Performance of Reinforced Concrete Bridge Columns
Author: Nadim I. WehbePublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 432
Book Description
Investigation of Flange Failures in Falsework Cap and Sill Beams
Author: Lyle P. CardenPublisher:
ISBN:
Category : Bridge failures
Languages : en
Pages : 170
Book Description
Seismic Performance of RC Bridge Column Bents Strengthened by Infill Walls
Author: Mohamed Ragab ElbaharPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 362
Book Description
Master's Theses Directories
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 324
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Performance of RC Bridge Columns Under Cyclic Combined Loading Including Torsion
Author: Qian LiPublisher:
ISBN:
Category : Civil engineering
Languages : en
Pages :
Book Description
Reinforced concrete (RC) bridge columns, specifically in the skewed and horizontally curved bridges, the bridges with unequal spans or column heights, and the bridges with outrigger bents, can be subjected to cyclic combined loading including axial, flexure, shear, and torsion loads during earthquakes. This combined loading condition would affect the performance of RC bridge columns with respect to strength, stiffness, deformation and progression of damage, and cause complex failure modes and in turn influence the overall behavior of the bridge system. This study performed experimental and analytical studies in order to investigate the performance of RC bridge columns under cyclic combined loading including torsion. The main variables considered here were (i) the ratio of torsion-to-bending moment (T/M), (ii) cross sectional shape, and (iii) transverse reinforcement configurations. The torsional and flexural hysteretic responses, plastic hinge formation, strength and stiffness degradation, rotation and displacement ductility limits, energy dissipation characteristics, and damage progression for these columns are discussed in this dissertation. A unified damage assessment approach was proposed to assess the damage limit states for RC columns under combined loading by unifying the decoupled damage index models for flexure and torsion. Moreover, a semi-empirical model was established to predict the interaction between bending, shear and torsional loads. It was found that the strength and stiffness degradation and progression of damage were amplified by an increase in torsional moment. The damage distribution and failure modes were affected by the combined loading effect. Also the square columns experienced more localized damage due to cross sectional shape and the transverse reinforcement configuration effect.
Effects of Confinement and Flares on the Seismic Performance of Reinforced Concrete Bridge Columns
Author: Nadim I. WehbePublisher:
ISBN:
Category : Columns, Concrete
Languages : en
Pages : 958
Book Description
Effects of Flexural Strength Variations on the Seismic Performance of Reinforced Concrete Multiple Column Bridge Bents
Author: Mark Lee MarshPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 390
Book Description