Optimal design of reinforced concrete beams for rectangular sections with straight haunches
Abstract Objective of this research is to present a mathematical model for optimal design of rectangular cross-section beams with straight haunches under the criterion of minimum cost considering the concrete cost and reinforcing steel cost, and taking into account the equations of the regulation (A...
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Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
2020
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oai:scielo:S0718-915X20200001000902020-05-26Optimal design of reinforced concrete beams for rectangular sections with straight haunchesLuévanos-Rojas,ArnulfoLópez-Chavarría,SandraMedina-Elizondo,ManuelKalashnikov,Vitaliy V. Optimal design straight haunches minimum cost rectangular cross-section beams uniformly distributed load concentrated load Abstract Objective of this research is to present a mathematical model for optimal design of rectangular cross-section beams with straight haunches under the criterion of minimum cost considering the concrete cost and reinforcing steel cost, and taking into account the equations of the regulation (ACI 318S-14). This model presents the equations for a uniformly distributed load and a concentrated load located anywhere on the beam. Two examples are developed by the proposed model, one for uniformly distributed load and another for concentrated load showing the best solution for each case. The results show the following: a) The prismatic beams for uniformly distributed load have a total cost of the 8% greater, a total volume and a total weight of the 9% greater with respect to the non-prismatic beams; b) The prismatic beams for concentrated load have a total cost, a total volume and a total weight of the 6% greater with respect to the non-prismatic beams. The main conclusions are: For a smaller b width the optimal design for both models is presented. The non-prismatic beams are more economical, also these have less volume and less weight with respect to prismatic beams.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.19 n.1 20202020-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000100090en10.7764/rdlc.19.1.90-102 |
| institution |
Scielo Chile |
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Scielo Chile |
| language |
English |
| topic |
Optimal design straight haunches minimum cost rectangular cross-section beams uniformly distributed load concentrated load |
| spellingShingle |
Optimal design straight haunches minimum cost rectangular cross-section beams uniformly distributed load concentrated load Luévanos-Rojas,Arnulfo López-Chavarría,Sandra Medina-Elizondo,Manuel Kalashnikov,Vitaliy V. Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| description |
Abstract Objective of this research is to present a mathematical model for optimal design of rectangular cross-section beams with straight haunches under the criterion of minimum cost considering the concrete cost and reinforcing steel cost, and taking into account the equations of the regulation (ACI 318S-14). This model presents the equations for a uniformly distributed load and a concentrated load located anywhere on the beam. Two examples are developed by the proposed model, one for uniformly distributed load and another for concentrated load showing the best solution for each case. The results show the following: a) The prismatic beams for uniformly distributed load have a total cost of the 8% greater, a total volume and a total weight of the 9% greater with respect to the non-prismatic beams; b) The prismatic beams for concentrated load have a total cost, a total volume and a total weight of the 6% greater with respect to the non-prismatic beams. The main conclusions are: For a smaller b width the optimal design for both models is presented. The non-prismatic beams are more economical, also these have less volume and less weight with respect to prismatic beams. |
| author |
Luévanos-Rojas,Arnulfo López-Chavarría,Sandra Medina-Elizondo,Manuel Kalashnikov,Vitaliy V. |
| author_facet |
Luévanos-Rojas,Arnulfo López-Chavarría,Sandra Medina-Elizondo,Manuel Kalashnikov,Vitaliy V. |
| author_sort |
Luévanos-Rojas,Arnulfo |
| title |
Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| title_short |
Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| title_full |
Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| title_fullStr |
Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| title_full_unstemmed |
Optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| title_sort |
optimal design of reinforced concrete beams for rectangular sections with straight haunches |
| publisher |
Escuela de Construcción Civil, Pontificia Universidad Católica de Chile |
| publishDate |
2020 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2020000100090 |
| work_keys_str_mv |
AT luevanosrojasarnulfo optimaldesignofreinforcedconcretebeamsforrectangularsectionswithstraighthaunches AT lopezchavarriasandra optimaldesignofreinforcedconcretebeamsforrectangularsectionswithstraighthaunches AT medinaelizondomanuel optimaldesignofreinforcedconcretebeamsforrectangularsectionswithstraighthaunches AT kalashnikovvitaliyv optimaldesignofreinforcedconcretebeamsforrectangularsectionswithstraighthaunches |
| _version_ |
1714206304649609216 |