Analysis And Design Of Curved Composite Box Girder Bridges
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Analysis And Design Of Curved Composite Box Girder Bridges
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Author : Yau-shian Ho
language : en
Publisher:
Release Date : 1972
Analysis And Design Of Curved Composite Box Girder Bridges written by Yau-shian Ho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Composite construction categories.
Behavior Design And Construction Of Horizontally Curved Composite Steel Box Girder Bridges Microform
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Author : Muayad Whyib Aldoori
language : en
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
Release Date : 2004
Behavior Design And Construction Of Horizontally Curved Composite Steel Box Girder Bridges Microform written by Muayad Whyib Aldoori and has been published by Library and Archives Canada = Bibliothèque et Archives Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Horizontally curved girder bridges have been used considerably in recent years in highly congested urban areas. However, although significant research on physical testing and advanced analysis has been underway for the past decade, the practical employment of many recommendations has not been achieved by the engineering community nor have standards reflecting this work been brought into practice. The design process of curved composite bridges involves tracking the stresses and the potential failure change in the girders during erection, construction and service loading stages. For structural safety and serviceability, the designer estimates the stresses induced within the bridge and assure that they do not exceed the applicable specified limit state as required in bridge design standards. However, the designer may be concerned about the level of approximation that is used in his estimate or even the applicability of the underlying theory. To answer this question and provide the designer with more insight into the behavior of the curved bridges, the field testing during construction and service loading of a curved bridge located near Baltimore, Maryland is re-examined here using linear elastic three-dimensional finite element modeling. Comparisons are made between the finite element results and the measured results. Finally, to facilitate the finite element modeling effort for use by a designer, ANSYS Parametric Design Language (APDL) capabilities are used here to develop an analysis/design tool for "Bath-Tub" style curved steel girder bridges. This tool is then used to evaluate the effects of several important design variables on the response and behavior of the girders during the construction phase. This study demonstrates the ability of finite element modeling to assess the stiffness, serviceability performance, buckling behavior and ultimate strength of curved bridges during construction and it is a major step towards a performance based approach to design for stability. The level of safety or reliability that would be available during the erection and the construction processes of horizontally curved girder bridges represents another major concern for the designer. A three span continuous curved box girder bridge in Houston, Texas is used in this study as an example reflecting current detailing and fabricating practice and it is chosen for a detailed evaluation of the structural safety/reliability during the erection and construction process. This task involves simulating the girder erection and concrete slab placement sequence of the bridge using comprehensive nonlinear three dimensional finite element modeling.
Development Of Lrfd Specifications For Horizontally Curved Steel Girder Bridges
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Author : J. M. Kulicki
language : en
Publisher: Transportation Research Board
Release Date : 2006
Development Of Lrfd Specifications For Horizontally Curved Steel Girder Bridges written by J. M. Kulicki 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 2006 with Bridges categories.
This report contains the findings of research performed to develop design specifications for horizontally curved steel girder bridges.
Study Of A Curved Continuous Composite Box Girder Bridge
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Author :
language : en
Publisher:
Release Date : 1993
Study Of A Curved Continuous Composite 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 1993 with categories.
To better understand the behaviour of curved box girder bridges in resisting eccentric design truck loads, and the influence of plan curvature on the structural response, a model study was conducted at the University of Ottawa. In this study, the elastic response of a curved composite box girder bridge model was evaluated experimentally and confirmed analytically using the finite element method. Analytical predictions of both vertical displacements and normal stresses at critical sections compared fairly well with those evaluated experimentally. The isoparametric thin shell element employed in the analysis proved to be versatile and provided an accurate representation of the various structural components of a curved box girder bridge. Despite the eccentric nature of the applied OHBDC design truck loads and the bridge plan curvature, it was evident that in resisting the applied live loads, the girders at critical sections share equal proportions of the applied bending moments.
Design Of Horizontally Curved Composite Box Girder Bridges
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Author :
language : en
Publisher:
Release Date : 1995
Design Of Horizontally Curved Composite Box Girder Bridges written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Because of their excellent torsional capacity, box girders are used extensively in modern bridge construction having curved alignments. Applications of most design codes have been limited to bridges where the radius of curvature is much greater than the span length and cross-sectional dimensions. To meet the practical requirements arising during the design process, simple design methods are needed for curved bridges. This paper presents the results of a parametric study on the relative behaviour of curved and straight box-girder bridges and on the development of a simplified design method for the combined longitudinal moment of curved bridges. The combined moment includes the effects of flexure, torsion, and distortion. Three simply supported concrete-steel composite bridge models, including single-cell, twin-cell, and three-cell box giders and subjected to loadings as specified in the Ontario Highway Bridge Design Code, were analyzed using the finite strip method. The parameters considered in the study include types of cross section: types, locations, and magnitudes of loads; span lengths; and radius of curvature. Preliminary analysis of the results suggests that the behaviour of horizontally curved box-girder bridges is dependent of a variety of parameters, but most importantly on the span-to-radius ratio. Empirical relationships for combined longitudinal moment between curved and straight box-girder bridges are also proposed.
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).
Analysis And Design Of Curved Box Girder Bridges
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Author : Christian Meyer
language : en
Publisher:
Release Date : 1970
Analysis And Design Of Curved Box Girder Bridges written by Christian Meyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Box girder bridges categories.
Improved Design Specifications For Horizontally Curved Steel Girder Highway Bridges
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Author : Dann H. Hall
language : en
Publisher: Transportation Research Board
Release Date : 1999
Improved Design Specifications For Horizontally Curved Steel Girder Highway Bridges written by Dann H. Hall 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 1999 with Technology & Engineering categories.
Experimental Investigation And Finite Element Nonlinear Analysis Of Continuous Composite Curved Multi Cell Box Girder Bridges
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Author : GuoQiang Xi
language : en
Publisher:
Release Date : 1999
Experimental Investigation And Finite Element Nonlinear Analysis Of Continuous Composite Curved Multi Cell Box Girder Bridges written by GuoQiang Xi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Studies on ultimate limit states and nonlinear behaviors of bridges will greatly enhance the understanding of bridge engineers on the moment and shear distribution and the general performance of bridges under load. Described herein is an experimental and theoretical investigation of ultimate loads and nonlinear behaviors of two-span continuous composite curved multi-cell box-girder bridges with a single column as middle support and subjected to OHBDC design truck loadings. The curved bridges are modeled by using the finite element methods. The deck slab, webs, the bottom plate and diaphragms are modeled by 4-node shell elements while the shear connectors and the single middle column are modeled by 3-D beam elements. The existing software COSMOS/M is used for the analysis. A model test of a two-span continuous composite curved multi-cell box-girder bridge with a single column at the middle support is conducted to verify the finite element method. Idealized bridges with different parameters are also studied. Consideration is given to many of the variables that significantly influence ultimate loads and nonlinear behaviors of such bridges. Several rational suggestions are made to enhance the design of two-span continuous composite curved four-cell box-girder bridges.
Composite Action During Construction Of Steel Trapezoidal Box Girder Bridges
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Author :
language : en
Publisher:
Release Date : 2005
Composite Action During Construction Of Steel Trapezoidal Box Girder Bridges written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Box girder bridges categories.
In steel trapezoidal box girder bridge systems, the U-shaped steel girder is designed to act compositely with the concrete deck to form a closed box for live loading. During the construction stage, however, the behavior is not well understood. The usual practice of assuming the system to be non-composite during construction requires substantial top flange bracing to form a quasi-closed box section. Composite box girders with live loading, and girders during construction, have to be evaluated during the design of curved steel trapezoidal box girder bridges. Considering both cases, the design for construction loading is the least understood and is the most important. Stresses due to construction loading can reach up to 60-70 percent of the total design stress for a given cross section. A three-phase study was undertaken to investigate the behavior of curved trapezoidal box girders during construction.