Dynamic Bending Stresses near the Ends of Parallel-Bundle Stay Cables

Prato, Carlos A.; Ceballos, Marcelo A.

doi:10.2749/101686603777965008

Cited by 19 publications

(5 citation statements)

References 2 publications

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“…The authors suggest that the grout acts as an abrasive that reduces fatigue life resulting from fretting. Prato and Ceballos (2003) studied dynamic bending stresses near anchorage sockets for grouted cables with HDPE pipes, but with bituminous epoxy replacing grout just before the anchorage ( Figure 38). The authors show that the dynamic stresses in wires are higher, and stress concentration occurs, when such a discontinuity is present (i.e., grout is replaced by bituminous epoxy).…”

Section: Fatiguementioning

confidence: 99%

Inspection and Maintenance of Bridge Stay Cable Systems

Tabatabai¹

2005

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Systematic, well-designed research provides the most effective approach to the solution of many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation develops increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research. In recognition of these needs, the highway administrators of the American Association of State Highway and Transportation Officials initiated in 1962 an objective national highway research program employing modern scientific techniques. This program is supported on a continuing basis by funds from participating member states of the Association and it receives the full cooperation and support of the Federal Highway Administration, United States Department of Transportation. The Transportation Research Board of the National Academies was requested by the Association to administer the research program because of the Board's recognized objectivity and understanding of modern research practices. The Board is uniquely suited for this purpose as it maintains an extensive committee structure from which authorities on any highway transportation subject may be drawn; it possesses avenues of communications and cooperation with federal, state, and local governmental agencies, universities, and industry; its relationship to the National Research Council is an insurance of objectivity; it maintains a full-time research correlation staff of specialists in highway transportation matters to bring the findings of research directly to those who are in a position to use them. The program is developed on the basis of research needs identified by chief administrators of the highway and transportation departments and by committees of AASHTO. Each year, specific areas of research needs to be included in the program are proposed to the National Research Council and the Board by the American Association of State Highway and Transportation Officials. Research projects to fulfill these needs are defined by the Board, and qualified research agencies are selected from those that have submitted proposals. Administration and surveillance of research contracts are the responsibilities of the National Research Council and the Transportation Research Board. The needs for highway research are many, and the National Cooperative Highway Research Program can make significant contributions to the solution of highway transportation problems of mutual concern to many responsible groups. The program, however, is intended to complement rather than to substitute for or duplicate other highway research programs.

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Section: Fatiguementioning

confidence: 99%

Inspection and Maintenance of Bridge Stay Cable Systems

Tabatabai¹

2005

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“…The methods for calculating and analysing classical suspension bridges with flexible cables for estimating local flexure are discussed in works by (Caballero & Pose, 2010;Furst et al, 2001;Gimsing & Georgakis, 2012;Juozapaitis & Norkus, 2005, 2007. The authors of the article (Prato & Ceballos, 2003) also pointed out the behavioural peculiarities of the main cables of suspension bridges and identified they were subject to the structure of the anchors of the cables and sufficiently large bending moments taking place at the bearing sections. Hence, a structural method for reducing the bending moments of the bearing sections of the main cables has been proposed.…”

Section: Introductionmentioning

confidence: 99%

The Simplified Analysis of the Asymmetric Single-Pylon Suspension Bridge With Rigid Cables

Grigorjeva

Paeglītis

2021

Engineering Structures and Technologies

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Suspension bridges are characterized by exceptional architectural expressions and excellent technical and economic properties. However, despite all advantages, suspension bridges have a few negative features. Suspension bridges with flexible cables share excessive deformation caused by the displacement of kinematic origin. In order to increase the stiffness of suspension bridges, an innovative structural solution refers to rigid cables used instead of the flexible ones. The paper describes a methodology for calculating an asymmetric single-pylon suspension bridge with rigid cables considering installation features. Also, the article presents the numerical simulation of the bridge and determines the accuracy of the proposed methodology.

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“…Both the constructions joints of such rigid cables are simple and reliable. Contrary to the cables made of high strength wires, dangerous local strains are not produced (Fürst et al 2001;Gimsing, Georgakis 2012;Prato, Ceballos 2003;Strasky 2005). The cross-sections of rigid cables are remarkably resistant to the impact of corrosion.…”

Section: Introductionmentioning

confidence: 99%

Analysis of innovative two-span suspension bridges

Juozapaitis

Merkevicius

Daniūnas

et al. 2015

The Baltic Journal of Road and Bridge Engineering

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Recently, two-span, or the so-called single pylon suspension bridges, due to their constructing structure, have been widely applied. A reduction in deformation seems to be the main problem of the behaviour and design of such bridges. The deformation of suspension bridges is mainly determined by cable kinematic displacements caused by temporary loadings rather than by elastic deformations. Not all known methods for the stabilization of the initial form of suspension bridges are suitable for single pylon bridges. The employment of the so-called rigid cables that increase the general stiffness of the suspension bridge appears to be one of the innovative methods for stabilizing the initial form of single pylon suspension bridges. Rigid cables are designed from standard steel profiles and, compared to the common ones made of spiral and parallel wires, are more resistant to corrosion. Moreover, the construction joints, in terms of fabrication and installation, have a simpler form. However, calculation methods for such single pylon suspension bridges with rigid cables are not sufficiently prepared. Only single publications on the analysis of the behaviour of one or three-span suspension bridges with rigid cables have been available so far. The paper presents analytical expressions to calculate the displacements and internal forces of suspension bridges with rigid cables thus assessing the sequence of cable installation. Also, the paper describes the sequence of iterative calculation.

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Dynamic Bending Stresses near the Ends of Parallel-Bundle Stay Cables

Cited by 19 publications

References 2 publications

Inspection and Maintenance of Bridge Stay Cable Systems

Inspection and Maintenance of Bridge Stay Cable Systems

The Simplified Analysis of the Asymmetric Single-Pylon Suspension Bridge With Rigid Cables

Analysis of innovative two-span suspension bridges

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