Effects Of Fabrication Process On Prestressed Composite Arches

    Authors

    A. Mirmiran;A. M. Amde

    Comments

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    Abbreviated Journal Title

    J. Struct. Eng.-ASCE

    Keywords

    Construction & Building Technology; Engineering, Civil

    Abstract

    Previous studies suggest that intentional buckling of wide shallow members as a fabrication method for arches and domes could result in buckling loads much lower than the conventional rigid (i.e., nonprestressed) structures of the same shape and weight. A modified prestressing technique is discussed in which single-layer struts are separately but simultaneously buckled into arch shape, and then attached to each other and to the supports to form a sandwich composite section. A nonlinear finite-element model is developed to study the effects of this technique on the stability behavior of prestressed sandwich arches. Equivalent rigid arches of elastica shape are studied by initializing the residual stresses prior to loading. A prestressed homogeneous arch that is twice as thick as each face layer of the sandwich section is used for comparison. Prestressing forces that were known to reduce the buckling loads of homogeneous arches by as much as 25%, are shown to have negligible effect on the stability of sandwich arches. Those negative effects almost completely vanish as the thickness of the core layer is increased relative to the overall thickness of the sandwich section.

    Journal Title

    Journal of Structural Engineering-Asce

    Volume

    121

    Issue/Number

    1

    Publication Date

    1-17-1995

    Document Type

    Article

    Language

    English

    First Page

    124

    Last Page

    131

    WOS Identifier

    WOS:A1995PZ05500011

    ISSN

    0733-9445

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