Thrall, AP.; Adriaenssens, S.; Paya-Zaforteza, I.; Zoli, T. (2012). Linkage-based movable bridges: Design methodology and three novel forms. Engineering Structures. 37:214-223. https://doi.org/10.1016/j.engstruct.2011.12.031
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/46326
Title:
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Linkage-based movable bridges: Design methodology and three novel forms
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Author:
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Thrall, Ashley P.
Adriaenssens, Sigrid
Paya-Zaforteza, I.
Zoli, Theodore
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería de la Construcción y de Proyectos de Ingeniería Civil - Departament d'Enginyeria de la Construcció i de Projectes d'Enginyeria Civil
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Issued date:
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Abstract:
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Linkages have been widely used in machines and deployable structures, but these mechanisms have rarely been employed in the design of movable bridges. This paper explores the use of linkages both to actuate the kinematic ...[+]
Linkages have been widely used in machines and deployable structures, but these mechanisms have rarely been employed in the design of movable bridges. This paper explores the use of linkages both to actuate the kinematic motion and to serve as structural elements of movable bridges. First, the design methodology for these forms is presented which includes (1) physical shape-finding to develop a conceptual design, (2) generation of a parametric model and kinematic equations, and (3) multi-objective structural optimization for minimum self-weight and minimum force for operation. This optimization procedure includes shape optimization to determine the lengths and relative angles of members and sizing optimization to design the section profiles of members to meet the specifications of current American bridge design code. Heuristic algorithms, including descent local search and multi-objective simulated annealing, are employed. Three novel linkage-based forms, featuring 38. m movable spans, that were designed using this methodology are presented. This research suggests the beginning of an investigation into alternative forms for movable bridges using linkages. © 2011 Elsevier Ltd.
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Subjects:
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Descent local search
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Linkage
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Movable bridge
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Multi-objective simulated annealing
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Structural optimization
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Bridge design
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Deployable structure
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Design Methodology
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Kinematic equations
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Local search
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Multi objective
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Optimization procedures
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Parametric models
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Section profiles
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Self-weight
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Sizing optimization
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Structural elements
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Conceptual design
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Heuristic algorithms
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Kinematics
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Shape optimization
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Simulated annealing
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Movable bridges
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Algorithm
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Bridge
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Methodology
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Numerical model
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Optimization
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Parameterization
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Copyrigths:
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Cerrado |
Source:
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Engineering Structures. (issn:
0141-0296
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DOI:
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10.1016/j.engstruct.2011.12.031
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.engstruct.2011.12.031
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Project ID:
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info:eu-repo/grantAgreement/MICINN//EX2008-0669/ES/EX2008-0669/
info:eu-repo/grantAgreement/NSF//0646086/US/GRADUATE RESEARCH FELLOWSHIP PROGRAM/
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Thanks:
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This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-0646086. Dr. Thrall is also grateful for support from the Norman J. Sollenberger Fellowship. ...[+]
This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-0646086. Dr. Thrall is also grateful for support from the Norman J. Sollenberger Fellowship. Dr. Paya-Zaforteza has been involved with this research project while on appointment as a Postdoctoral Fellow under the Program for Postdoctoral Stays administered by the Spanish Ministry of Education(Contract Number EX-2008-0669). The authors are grateful for the advice of Professors Maria E.M. Garlock (Princeton University), David P. Billington (Princeton University), and James K. Guest (Johns Hopkins University). The authors would also like to thank the anonymous reviewers for their helpful comments and suggestions.
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Type:
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Artículo
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