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Author : A C. Scordelis
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (639 download)
Download or read book Wheel Load Distribution in Concrete Box Girder Bridges written by A C. Scordelis and published by . This book was released on 1969 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daryl Eugene Young
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (27 download)
Download or read book A Comparison of Wheel Load Distribution Factors Used in the Design of Multibeam, Non-composite, Precast, Prestressed, Concrete Box Girder Bridge Decks written by Daryl Eugene Young and published by . This book was released on 1992 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wallace Wolfred Sanders
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.3/5 (555 download)
Download or read book Distribution of Wheel Loads on Highway Bridges written by Wallace Wolfred Sanders and published by . This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This synthesis will be useful to bridge engineers and others concerned with the design and structural evaluation of highway bridges. Information is presented on various approaches currently used to calculate the distribution of wheel loads among the supporting members in bridge superstructures."--Avant-propos.
Author : Nutt, Redfield, and Valentine
Publisher : Transportation Research Board
ISBN 13 : 030911750X
Total Pages : 97 pages
Book Rating : 4.3/5 (91 download)
Download or read book Development of Design Specifications and Commentary for Horizontally Curved Concrete Box-girder Bridges written by Nutt, Redfield, and Valentine and published by Transportation Research Board. This book was released on 2008 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Author : Anthony Ralph Cusens
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (89 download)
Download or read book Load Distribution in Concrete Bridge Decks written by Anthony Ralph Cusens and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raymond E. Davis
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (82 download)
Download or read book Live Load Distribution in Concrete Box Girder Bridges written by Raymond E. Davis and published by . This book was released on 1982* with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shady Nasry Badie Labib
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Adjacent Precast Prestressed Concrete Box Girder Bridges Transversely Post-tensioned at Top Flanges Only written by Shady Nasry Badie Labib and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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%.
Author : Ryan Robert Doerrer
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (226 download)
Download or read book Live Load Distribution for Cast-in-place Concrete Box Girder Bridges written by Ryan Robert Doerrer and published by . This book was released on 2007 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jörg Schlaich
Publisher : IABSE
ISBN 13 : 3857480319
Total Pages : 114 pages
Book Rating : 4.8/5 (574 download)
Download or read book Concrete Box-girder Bridges written by Jörg Schlaich and published by IABSE. This book was released on 1982 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James Grant Arendts
Publisher :
ISBN 13 :
Total Pages : 340 pages
Book Rating : 4.:/5 (368 download)
Download or read book Load Distribution in Simply Supported Concrete Box Girder Highway Bridges written by James Grant Arendts and published by . This book was released on 1969 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daryl Eugene Young
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.3/5 (555 download)
Download or read book Effect of Relative Flexural/torsional Beam Characteristics Upon Load Distribution in Multi-beam Bridges written by Daryl Eugene Young and published by . This book was released on 1993 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tyler W. Stillings
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (812 download)
Download or read book Load Distribution and Ultimate Strength of an Adjacent Precast, Prestressed Concrete Box Girder Bridge written by Tyler W. Stillings and published by . This book was released on 2012 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Seyed Jalaleddin Fatemi
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (953 download)
Download or read book Load Distribution Factors of Straight and Curved Steel Concrete Composite Box and I Girder Bridges written by Seyed Jalaleddin Fatemi and published by . This book was released on 2016 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present research, load distribution factors of steel-concrete composite bridges subjected to loads recommended by Australian Bridge Design Code are determined. The bridges can have straight or curved (in plan) alignments with box girder or I girder sectional configurations. The load distribution factors are quite useful in bridge design practice specifically at their preliminary design stage. These factors help a designer to quickly calculate the stress resultants (shear force or bending moment) acting on different girders of a bridge from those acting on the entire bridge section which can be estimated easily in the case of a statically determinant structure such as simply supported straight bridge treated as a beam. Unfortunately, the horizontally curved bridges are statically indeterminate even if they are idealized as a curved beam. In order to address this issue, a closed form analytical solution without having any major simplification is developed which can be conveniently used by a designer for calculating the stress resultants acting on the entire section of a curved bridge. The unit load method, a method extracted from Castigliano's second theorem, is used to derive the analytical solution. As bridge loads consist of a number of wheel loads, the use of influence line diagrams is quite common as they help to calculate the maximum values of any parameter such as bending moment conveniently. For this purpose, the analytical solution is used to obtain the influence line diagram of shear force, bending moment and torsion of curved bridges. A detailed finite element modelling of these bridge structures is used to calculate the load distribution factors. In order to have a reliable finite element model of these structural system, different types of element such as solid element, shell element and beam element are used in different combinations to find out the most suitable option that can accurately simulate the components of these bridge systems with reasonable computational efficiency. The performance of these finite element models is assessed using experimental results available in literature. These bridges can be characterized with different parameters and these parameters can vary in a wide range in real scenario. Thus there is a need for development of design formulae or charts for load distribution factors in terms of these parameters that can be readily used for designing any bridge. For this purpose, a large number of configurations of these bridges are generated by varying their different parameters and these bridges are analysed using the abovementioned finite element model. A large number of results obtained from these analyses are used to develop the design guidelines in the form of empirical expressions using multivariate regression analysis.
Author : Oris H. Degenkolb
Publisher : Iowa State Press
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.3/5 (91 download)
Download or read book Concrete Box Girder Bridges written by Oris H. Degenkolb and published by Iowa State Press. This book was released on 1977 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Clifford Wagner Elling
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (1 download)
Download or read book Distribution of Girder Loads in a Composite Highway Bridge written by Clifford Wagner Elling and published by . This book was released on 1985 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : American Association of State Highway and Transportation Officials
Publisher : AASHTO
ISBN 13 : 1560511710
Total Pages : 1054 pages
Book Rating : 4.5/5 (65 download)
Download or read book Standard Specifications for Highway Bridges written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 2002 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. Yilmaz
Publisher : Springer Science & Business Media
ISBN 13 : 9400961227
Total Pages : 447 pages
Book Rating : 4.4/5 (9 download)
Download or read book Analysis and Design of Bridges written by C. Yilmaz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the NATO Advanced Study Institute on Analysis and Design of Bridges held at ~e§me, lzmir, Turkey from 28 June 1982 to 9 July 1982 are contained in the present volume. The Advanced Study Institute was attended by 37 lecturers and participants from 10 different countries. The Organizing Committee consisted of Professors P. Gtilkan, A. C. Scordelis, S. T. Wasti and 9. Yl. lmaz. The guidelines set by NATO for the Advanced Study Institute require it to serve not only as an efficient forum for the dissemination of available advanced knowledge to a selected group of qualified people but also as a platform for the exploration of future research possibilities in the scientific or engineering areas concerned. The main topics covered by the present Advanced Study Institute were the mathematical modelling of bridges for better analysis and the scientific assessment of bridge behaviour for the introduction of improved design procedures. It has been our observation that as a result of the range and depth of the lectures presented and the many informal discussions that took place, ideas became fissile, the stimulus never flagged and many gaps in the engineering knowledge of the participants were "bridged". Here we particularly wish to mention that valuable informal presenta tions of research work were made during the course of the Institute by Drs. Friedrich, Karaesmen, Lamas and Parker.
