Preliminary Design of Post-Tensioned Transfer Girders
Publication: Practice Periodical on Structural Design and Construction
Volume 25, Issue 4
Abstract
Posttensioned transfer girders offer elegant solutions to support vertical members that do not extend below lower levels of high-rise buildings. The design of a posttensioned transfer girder involves selection of a preliminary section, and then optimization of girder size and the prestressing force to satisfy serviceability and ultimate design requirements. In practice, typical span-to-depth ratios are used for preliminary sizing of structures. However, in the case of transfer girders, it is not easy to set a rule-of-thumb because the depth of the member depends on the transferred load and many other parameters. Herein, a simple approach is suggested to practicing engineers for determining the depth of simply supported transfer girders with minimal trial and error. It is shown that the proposed expression gives reasonable preliminary dimensions to achieve an acceptable design in terms of serviceability.
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Data Availability Statement
No data, models, or code were generated or used during the study.
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 25 • Issue 4 • November 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Oct 23, 2019
Accepted: Jun 10, 2020
Published online: Aug 11, 2020
Published in print: Nov 1, 2020
Discussion open until: Jan 11, 2021
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