Behavior Of Adjacent Precast Prestressed Concrete Box Girder Bridges

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Behavior Of Adjacent Precast Prestressed Concrete Box Girder Bridges

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Author : Kromel E. Hanna
language : en
Publisher:
Release Date : 2008

Behavior Of Adjacent Precast Prestressed Concrete Box Girder Bridges written by Kromel E. Hanna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Box girder bridges categories.

Adjacent Precast Prestressed Concrete Box Girder Bridges Transversely Post Tensioned At Top Flanges Only

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Author : Shady Nasry Badie Labib
language : en
Publisher:
Release Date : 2021

Adjacent Precast Prestressed Concrete Box Girder Bridges Transversely Post Tensioned At Top Flanges Only written by Shady Nasry Badie Labib and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.

Adjacent precast, prestressed concrete box girders are widely used in short and medium span bridges in North America. Adjacent box girders are connected at their interface using partial- or full-depth grouted shear keys. Typically, transverse post-tensioning (TPT) is applied through diaphragms at discrete locations along the bridge span to improve the transverse load distribution and control differential deflections. Nevertheless, diaphragms only reduce the differential deflection between girders and do not eliminate it. In addition, the provision of transverse diaphragms is associated with an increased cost and time. The main objective of this research program is to investigate the feasibility of eliminating the transverse diaphragms by applying TPT in the top flange of the girders. The effect of applying TPT in the top flange of the girders, instead of being accommodated in discrete rigid diaphragms, on the transverse load distribution is studied. The research program comprised two phases: experimental and numerical. The experimental phase consisted of four different tests on a one-third scale bridge model, (1) Strain distribution test - uncracked shear key, (2) Load distribution test - uncracked shear key, (3) Load distribution test - cracked shear key, and (4) Ultimate load test. On the other hand, the numerical phase included the construction of a finite element model (FEM) to validate the experimental results of the tested bridge. The validated FEM was then used to study the influence of varying several parameters including the presence of concrete topping, wheel load location and the width of the bridge on the transverse load distribution behavior of box girder bridges. Results demonstrated the efficiency of distributing the TPT force at a shorter spacing along the length of the bridge in producing the minimum required concrete prestress. In addition, the influence of TPT force and spacing on the transverse load distribution behavior was found insignificant during the simulated service condition (fully-intact or partially-cracked shear keys). However, at failure, the presence of TPT added redundancy to the bridge model and mitigated any sudden failure when shear keys were fully cracked. Furthermore, the presence of concrete topping reduced mid-span deflection up to 25%.

Adjacent Precast Concrete Box Beam Bridges

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Author : H. G. Russell
language : en
Publisher: Transportation Research Board National Research
Release Date : 2009

Adjacent Precast Concrete Box Beam Bridges written by H. G. Russell 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 2009 with Social Science categories.

At head of title: National Cooperative Highway Research Program.

Structural Behavior Characteristics Of Prestressed Concrete Box Beam Bridges

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Author : David A. VanHorn
language : en
Publisher:
Release Date : 1969

Structural Behavior Characteristics Of Prestressed Concrete Box Beam Bridges written by David A. VanHorn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Box girder bridges categories.

Development Of Design Specifications And Commentary For Horizontally Curved Concrete Box Girder Bridges

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Author : Nutt, Redfield, and Valentine
language : en
Publisher: Transportation Research Board
Release Date : 2008

Development Of Design Specifications And Commentary For Horizontally Curved Concrete Box Girder Bridges written by Nutt, Redfield, and Valentine and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Box girder bridges categories.

This report provides specifications, commentary, and examples for the design of horizontally curved concrete box-girder highway bridges. The report details the development of the design procedures. Recommended Load and Resistance Factor Design (LRFD) specifications and design examples illustrating the application of the design methods and specifications are included in appendixes (available on the TRB website at http://trb.org/news/blurb_detail.asp?id=9596).

Structural Model Of A Prestressed Concrete Box Girder Bridge

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Author :
language : en
Publisher:
Release Date : 1972

Structural Model Of A Prestressed Concrete Box Girder Bridge written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Box girder bridges categories.

Extending Span Ranges Of Precast Prestressed Concrete Girders

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Author : Reid Wilson Castrodale
language : en
Publisher: Transportation Research Board
Release Date : 2004

Extending Span Ranges Of Precast Prestressed Concrete Girders written by Reid Wilson Castrodale and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Concrete bridges categories.

At head of title: National Cooperative Highway Research Program.

Load Distribution And Ultimate Strength Of An Adjacent Precast Prestressed Concrete Box Girder Bridge

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Author : Tyler W. Stillings
language : en
Publisher:
Release Date : 2012

Load Distribution And Ultimate Strength Of An Adjacent Precast Prestressed Concrete Box Girder Bridge written by Tyler W. Stillings and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

A decommissioned, adjacent precast, prestressed concrete box girder bridge constructed in 1967 was load tested to destruction in August and September of 2010. The bridge, which crossed Paint Creek approximately nine miles (14.5 km) northeast of Washington Court House, Ohio, consisted of three simple spans, each 47 ft. 10 in. (14.6 m) long. Each span was comprised of nine, 21 in. (533.4 mm) deep by 36 in. (914.4 mm) wide prestressed concrete box beams for a total width of up to 27 ft. 4 in. (8.3 m) with a 15° left-forward skew. Prior to testing, the bridge appeared to be in good condition, with the vast majority of deterioration limited to concrete spalling from the exterior webs of the fascia girders. Of the three spans tested, this thesis details testing and analysis of the first two. In addition to environmental deterioration, the first span was damaged by researchers, whereas no additional damage was done to the second. Loads were applied via three, 350 kip (1557 kN) hydraulic cylinders supported by steel load frames. Test data collected from pressure transducers, wire potentiometers, and strain gauges were compared to predictions from a reinforced concrete modeling program. Beam capacity and bridge distribution factors were compared to values calculated from the AASHTO LRFD Bridge Design Specifications. Data analysis shows that the response of the bridge was predicted well by the analysis program for both low-level destructive and ultimate destructive loads. It was determined that bridge capacity could be found by summing the capacity of each individual beam, as long as the calculated capacity is reduced for the effects of damage. The bridge maintained its ability to transmit load between girders even after cracking of shear keys, indicating that steel tie rods play a major role in transmitting load from one beam to the next.

Structural Behavior Of A Prestressed Concrete Box Beam Bridge Hazleton Bridge

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Author : Yan-liang Chen
language : en
Publisher:
Release Date : 1970

Structural Behavior Of A Prestressed Concrete Box Beam Bridge Hazleton Bridge written by Yan-liang Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.

Analytical And Experimental Studies On The Static And Fatigue Behavior Of Precast Prestressed Concrete Multi Box Beam Bridge System

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Author : Ramkumar Kozhikote
language : en
Publisher:
Release Date : 1989

Analytical And Experimental Studies On The Static And Fatigue Behavior Of Precast Prestressed Concrete Multi Box Beam Bridge System written by Ramkumar Kozhikote and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Box beams categories.