Premium
Conceptual design of externally posttensioned curved structures for live loads
Author(s) -
Cañada PérezSala Javier,
Todisco Leonardo
Publication year - 2020
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201900536
Subject(s) - structural engineering , discretization , parametric statistics , bending moment , moment (physics) , set (abstract data type) , bending , work (physics) , structural system , structural load , connection (principal bundle) , computer science , engineering , mathematics , mathematical analysis , mechanical engineering , physics , statistics , classical mechanics , programming language
Bending moments due to permanent loads can be strongly reduced in a generally shaped structure by introducing a set of additional forces through an external posttensioning system. The response of these structures under live loads has not been studied yet; therefore, this work investigates the behavior of these structural systems under load distributions that differ from the permanent ones. First, a definition of a moment‐based efficiency is proposed. Next, a parametric analysis is carried out to evaluate the performance of these structural systems by varying the two main design variables and other relevant parameters (strut connection and orientation, discretization, efficiency definition, etc.). Finally, the methodology is applied to a case of study where several posttensioned alternatives are compared to the standard one (i.e., without posttensioning) to prove the benefits of adopting external posttensioning in terms of material‐saving.