Seismic Design And Performance Of Precast Concrete Segmental Bridge Columns
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Seismic Design And Performance Of Precast Concrete Segmental Bridge Columns
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Author : Joshua T. Hewes
language : en
Publisher:
Release Date : 2002
Seismic Design And Performance Of Precast Concrete Segmental Bridge Columns written by Joshua T. Hewes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Precast Segmental Post Tensioned Concrete Bridge Columns For Seismic Regions
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Author : Yu-Chen Ou
language : en
Publisher:
Release Date : 2007
Precast Segmental Post Tensioned Concrete Bridge Columns For Seismic Regions written by Yu-Chen Ou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
A simplified analytical model for static pushover analysis and a three-dimensional detailed finite element model for cyclic analysis of the proposed bridge columns are developed in this research. In addition, a stiffness degrading hysteretic model is proposed for response-history analysis. With the analytical models, a parametric study is conducted to examine the seismic performance of the proposed columns with different design parameters.
Seismic Performance Of Precast Segmental Bridge Superstructures
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Author :
language : en
Publisher:
Release Date : 2002
Seismic Performance Of Precast Segmental Bridge Superstructures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Bridges categories.
Seismic Response Of Precast Bridge Columns With Energy Dissipating Joints
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Author : Sarira Motaref
language : en
Publisher:
Release Date : 2011
Seismic Response Of Precast Bridge Columns With Energy Dissipating Joints written by Sarira Motaref and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Columns, Concrete categories.
Seismic Performance Of Precast Segmental Bridge Superstructures
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Author : Manu Garg
language : en
Publisher:
Release Date : 2002
Seismic Performance Of Precast Segmental Bridge Superstructures written by Manu Garg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Seismic Performance Of Stainless And Conventional Steel Energy Dissipation Bars In Precast Segmental Bridge Columns
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Author : Yihui Zhou
language : en
Publisher:
Release Date : 2011
Seismic Performance Of Stainless And Conventional Steel Energy Dissipation Bars In Precast Segmental Bridge Columns written by Yihui Zhou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The use of stainless steel reinforcing bars in seismic applications has recently attracted much attention in the civil engineering community due to its superior material properties, including high corrosion resistance and high specific strength. However, as with all new materials, a number of shortcomings are unavoidable, such as high initial costs, unknown low-cycle fatigue behavior, uncertain ductility properties and unidentified bond-slip behavior between the embedded bar and grouted duct in precast concrete element for use in segmental bridge members. The performance of precast segmental post-tensioned concrete bridge columns in seismic regions has been investigated by many other researchers. Mild steel energy dissipation bars (ED bars) that were continuous across the column segment joints were added into the columns to increase the hysteretic energy dissipation capacity.^In phase Iexperimental study, mechanical properties and low-cycle fatigue behavior of Talley S24100, Talley 316LN, Talley 2205 and Arminox UNS S32304 stainless reinforcing steel, A706 carbon black reinforcing steel, and MMFX II high strength, corrosion resistant reinforcing steel were investigated. Talley S24100 was found to obtain the highest ductility and the best low-cycle fatigue performance among the steels investigated. Therefore, compared to A706, Talley S24100 was considered to be the superior substitute material for ED bars. Succeeding phase II and phase III study on the bond-slip response of stainless steel reinforcing bars in grouted ducts of precast concrete element was then carried out with a focus on the influence of various duct/bar diameter ratios and different embedment lengths.^A seriesof monotonic pull-out and tension cyclic tests were conducted to investigate the constitutive bond-slip relationship between the bar and duct confined grout and their further applications under seismic loadings. Results showed that for A706 and Talley S24100 steels, both the duct/bar diameter ratio and embedment length influenced the bond-slip behavior in the monotonic pull-out tests. A one-dimensional nonlinear bond spring model exhibited a good performance in simulating the test results. In addition to the conventional bond-slip model, an "end-slip model" is also proposed in this study to describe the loaded end slip behavior of a bar anchored in grouted duct with a relatively deep embedment (12,16and 24 db). Each bond-slip and end-slip model has a five segment structure (each segment is linear). Recommended design equations were developed for development lengths for A706 and Talley S24100 reinforcing steels, respectively.^The local ED bar strains at different column top drift levels were investigated.
Seismic Response Of Unbonded Post Tensioned Precast Concrete Segmental Bridge Columns
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Author : Joshua Tyler Hewes
language : en
Publisher:
Release Date : 2000
Seismic Response Of Unbonded Post Tensioned Precast Concrete Segmental Bridge Columns written by Joshua Tyler Hewes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Application Of Accelerated Bridge Construction Connections In Moderate To High Seismic Regions
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Author :
language : en
Publisher: Transportation Research Board National Research
Release Date : 2011
Application Of Accelerated Bridge Construction Connections In Moderate To High Seismic Regions written by and has been published by Transportation Research Board National Research this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Technology & Engineering categories.
TRB’s National Cooperative Highway Research Program (NCHRP) Report 698: Application of Accelerated Bridge Construction Connections in Moderate-to-High Seismic Regions evaluates the performance of connection details for bridge members in accelerated bridge construction in medium-to-high seismic regions and offers suggestions for further research.
Visual Inspection Capacity Assessment Of Earthquake Damaged Reinforced Concrete Bridge Elements
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Author :
language : en
Publisher:
Release Date : 2008
Visual Inspection Capacity Assessment Of Earthquake Damaged Reinforced Concrete Bridge Elements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Bridges categories.
Seismic Design And Analysis Of A Precast Segmental Concrete Bridge Model
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Author : Myrto Anagnostopoulou
language : en
Publisher:
Release Date : 2011
Seismic Design And Analysis Of A Precast Segmental Concrete Bridge Model written by Myrto Anagnostopoulou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Concrete bridges categories.
"The primary objective of this study is to investigate the response of precast segmental concrete bridge structures, designed according to Accelerated Bridge Construction (ABC) techniques, when subjected to earthquake loading. A large-scale model of a single-span segmental bridge was designed to be tested on the dual six-degree of freedom shake tables of the Structural Engineering and Earthquake Simulation Laboratory (SEESL) at the University at Buffalo. The AASHTO LRFD Bridge Design Specifications and the PCI Bridge Design Manual were used for the design of the bridge model. A key concept incorporating post-tensioned internal unbounded tendons acting as the only continuous reinforcement between adjacent segments of both the superstructure and substructure was introduced in the design. Unbonded tendons can allow the triggering of a gap opening mechanism between adjacent segments and the system's self-centering response when subjected to seismic loads. In a companion effort, a two-dimensional numerical model of the segmental bridge superstructure was developed to verify its behavior under vertical seismic loads. The numerical model was analyzed under a series of vertical seismic excitations using nonlinear time-history dynamic analysis methods and its seismic response was evaluated considering different seismic intensities. The development and design of the segmental bridge model as well as the response of the superstructure's numerical model under vertical seismic loads are presented in this report"--Pages iii-iv.