Relative Efficiency of External Prestressing
Publication: Journal of Structural Engineering
Volume 121, Issue 12
Abstract
In this paper, the efficiency of tendon profiles is examined for the internal and external prestressing of statically indeterminate structures. The statically indeterminate component of the total prestressing moment is shown to be significant for both parabolic and linear tendon profiles. However, although linear profiles are more effective in counteracting gravity moments in support regions, their efficiency within the spans can be significantly reduced. Therefore, for these profiles, it is more difficult to optimize the effective eccentricity of the prestressing force all along the members. On the other hand, internal prestressing with parabolic tendons offers a more uniform efficiency throughout the structure. Recommendations indicate how localized linear tendons can improve the efficiency of external prestressing.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 121 • Issue 12 • December 1995
Pages: 1832 - 1841
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Dec 1, 1995
Published in print: Dec 1995
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