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IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints


IASS Symposium 2014

SESSION: Plenary Lectures

Recoverable tension anchors for structural membranes

< Table of Contents for Plenary Lectures
  • Proceedings Name: IASS-SLTE Symposium 2014: Shells, Membranes and Spatial Structures: Footprints
  • ISSN: (Electronic Version) 2518-6582
  • Session: Plenary Lectures
  • Title: Recoverable tension anchors for structural membranes
  • Author(s): José Ignacio de LLORENS DURAN
  • Keywords: soil anchors, foundations in tension, uplift capacity
Abstract
Structural membranes are highly efficient because, unlike conventional structures, they rely on shape and pretensioning rather than stiffness and weight. However, their efficiency can be partly offset by the way in which the tensions are balanced into the ground by foundations in tension. Anchoring tension to ground can be accomplished by relying on the self-weight of the foundation and involving the soil reaction. Relying on the self -weight of the foundation is inefficient because of the waste of material and the amount of excavation, replacement and compaction of the soil removed. Lightweight recoverable anchors which mobilize the soil reaction, as plant roots do, are therefore preferred. Several types of foundation in tension with different materials, geometries, manufactures, installations, efficiencies and depths have been studies and completed by recent full-scale tests. As a result, a better understanding of the uplift behavior and mode of failure have been acquire. Therefore, the pull-out capacity of anchors for tensile structures can be evaluated.

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