Ruiz-Vélez Andrés, Alcalá Julián, Yepes Víctor
Institute of Concrete Science and Technology (ICITECH), Universitat Politècnica de València, 46022 València, Spain.
Materials (Basel). 2023 Jan 18;16(3):931. doi: 10.3390/ma16030931.
This paper addresses a study of cost-optimal road modular hinged frames. The performance of three hybrid metaheuristics is assessed through a fractional factorial design of experiments. The results allow for selecting and calibrating the hybrid simulated annealing to solve the combinatorial optimization problem. By varying the horizontal span from 8 to 16 meters and the earth cover from 1 to 5 meters, 25 different structural configurations are studied. The calibrated methodology is applied to obtain nine different frames with optimal costs for each configuration. The study of the economic, environmental and geometrical characteristics of the 225 optimum structures allows for the development of a regression analysis. With R2 correlation coefficients close to the unit, the expressions form a valuable tool for calculating the final cost, associated emissions, embodied energy and particular geometric characteristics. The optimum structures present slender and densely reinforced designs. In addition, some structures show considerable reductions in the shear reinforcement, something solved by localized increases in longitudinal reinforcement.
本文探讨了成本最优的道路模块化铰接框架的研究。通过分数析因实验设计评估了三种混合元启发式算法的性能。结果有助于选择和校准混合模拟退火算法来解决组合优化问题。通过将水平跨度从8米变化到16米，覆土从1米变化到5米，研究了25种不同的结构配置。应用校准后的方法为每种配置获得九个具有最优成本的不同框架。对225个最优结构的经济、环境和几何特征的研究有助于开展回归分析。由于R2相关系数接近1，这些表达式成为计算最终成本、相关排放、隐含能源和特定几何特征的有价值工具。最优结构呈现出细长且配筋密集的设计。此外，一些结构的抗剪钢筋有显著减少，这可通过局部增加纵向钢筋来解决。
