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Generating initial reinforcement layouts using graphic statics

Alic, Vedad LU and Persson, Kent LU (2018) IASS Symposium 2018
Abstract
A key step to the strut-and-tie method is the selection of an appropriate truss model, due to the static indeterminacy of reinforced concrete there are often several suitable models possible. A method for automatically generating a suitable truss model by using graphic statics is presented. Optimal layouts are found by minimizing the total load path. A formulation of constraints suitable for generating an initial strut-and-tie model confined to an arbitrary polygon with holes is also presented. The performance by using derivative based and derivative free solvers is compared. The method is applied to several examples and the results are compared to existing methods from literature as well as to the principal stress patterns based on finite... (More)
A key step to the strut-and-tie method is the selection of an appropriate truss model, due to the static indeterminacy of reinforced concrete there are often several suitable models possible. A method for automatically generating a suitable truss model by using graphic statics is presented. Optimal layouts are found by minimizing the total load path. A formulation of constraints suitable for generating an initial strut-and-tie model confined to an arbitrary polygon with holes is also presented. The performance by using derivative based and derivative free solvers is compared. The method is applied to several examples and the results are compared to existing methods from literature as well as to the principal stress patterns based on finite element analysis. All of the presented examples yield good results and the optimal layouts found can be used as a starting point for further design with the strut-and-tie method. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
graphic statics, strut-and-tie, reinforcement layout, optimization
host publication
Proceedings of the IASS Symposium 2018
publisher
International Association for Shell and Spatial Structures (IASS)
conference name
IASS Symposium 2018
conference location
Boston, United States
conference dates
2018-07-16 - 2018-07-20
language
English
LU publication?
yes
id
691bef3a-fc0c-43e4-8bc6-53843bb2ea9d
date added to LUP
2018-10-29 13:55:15
date last changed
2018-11-21 21:42:49
@inproceedings{691bef3a-fc0c-43e4-8bc6-53843bb2ea9d,
  abstract     = {A key step to the strut-and-tie method is the selection of an appropriate truss model, due to the static indeterminacy of reinforced concrete there are often several suitable models possible. A method for automatically generating a suitable truss model by using graphic statics is presented. Optimal layouts are found by minimizing the total load path. A formulation of constraints suitable for generating an initial strut-and-tie model confined to an arbitrary polygon with holes is also presented. The performance by using derivative based and derivative free solvers is compared. The method is applied to several examples and the results are compared to existing methods from literature as well as to the principal stress patterns based on finite element analysis. All of the presented examples yield good results and the optimal layouts found can be used as a starting point for further design with the strut-and-tie method.},
  author       = {Alic, Vedad and Persson, Kent},
  keyword      = {graphic statics,strut-and-tie,reinforcement layout,optimization},
  language     = {eng},
  location     = {Boston, United States},
  publisher    = {International Association for Shell and Spatial Structures (IASS)},
  title        = {Generating initial reinforcement layouts using graphic statics},
  year         = {2018},
}