Publicada By V铆ctor Yepes Piqueras - Material
Para empezar este a帽o 2017, nada mejor que te comuniquen la publicaci贸n de un art铆culo de investigaci贸n el mismo d铆a 1. Se trata en este caso de la utilizaci贸n de algoritmos heur铆sticos h铆bridos para optimizar el coste de muros de contrafuertes. Se ha publicado en la revista Engineering Structures.
Como suele ser habitual en la editorial Elsevier, os pod茅is descargar GRATUITAMENTE el art铆culo hasta el 20 de febrero accediendo al siguiente enlace:
This paper represents an economic optimization of buttressed earth-retaining walls. We explore the optimum solutions using a harmony search with an intensification stage through threshold accepting. The calibration of the resulting algorithm has been obtained as a result of several test runs for different parameters. A design parametric study was computed to walls in series from 4 to 16 m total height. The results showed different ratios of reinforcement per volume of concrete for three types of ground fill. Our main findings confirmed that the most sensitive variable for optimum walls is the wall-friction angle. The preference for wall-fill friction angles different to 0 in project design is confirmed. The type of fill is stated as the main key factor affecting the cost of optimum walls. The design parametric study shows that the soil foundation bearing capacity substantially affects costs, mainly in coarse granular fills (F1). In that sense, cost-optimum walls are less sensitive to the bearing capacity in mixed soils (F2) and fine soils of low plasticity (F3). Our results also showed that safety against sliding is a more influential factor for optimum buttressed walls than the overturning constraint. Finally, as for the results derived from the optimization procedure, a more suitable rule of thumb to dimension the footing thickness of the footing is proposed.
Structural design; Heuristics; Harmony search; Cost optimization; Concrete structures
MOLINA-MORENO, F.; GARC脥A-SEGURA, T.; MART脥, J.V.; YEPES, V. (2017).聽Optimization of buttressed earth-retaining walls using hybrid harmony search algorithms. Engineering Structures, 134:205-216.聽http://dx.doi.org/10.1016/j.engstruct.2016.12.042