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Multiobjective Aerodynamic Optimization of Tall Building Openings for Wind-Induced Load Reduction
| 题名： | Multiobjective Aerodynamic Optimization of Tall Building Openings for Wind-Induced Load Reduction |
| 其他题名： | Aboshosha,H.,A.Elshaer,G.T.Bitsuamlak,and A.El Damatty.2015."Consistent inflow turbulence generator for LES evaluation of windinduced responses for tall buildings."J.Wind Eng.Ind.Aerodyn.142:198-216.https://doi.org/10.1016/j.jweia.2015.04.004. |
| 正文语种： | 英文 |
| 作者： | Ahmed Elshaer |
| 关键词： | Tall building;Wind load;Vibration;Wind direction;Turbulence;Aerodynamics;Large eddy simulation (LES);Genetic algorithm;Neural network;Multiobjective optimization |
| 摘要： | The dependency of wind forces and responses on the outer shape of tall buildings provides a unique opportunity to reduce wind effects through the aerodynamic optimization of the outer shape. The current study presents a multiobjective aerodynamic optimization procedure (AOP) by introducing horizontal openings to reduce wind load. The adopted method joins an optimization algorithm, large eddy simulation (LES), and an artificial neural network (ANN) surrogate model. The base building geometry is the Commonwealth Advisory Aeronautical Research Council (CAARC) building. The present optimization process is carried out by introducing three openings along the height of the building. However, the adopted method is useful for any shape modifications. In all cases, opening volumes are maintained at 10％ of the total building volume to enable a simple comparative performance assessment. The objective of the optimization process is to identify the optimal aspect ratio and distances between the openings that produce the best aerodynamic performance. Three optimization problems are presented. The first two follow single-objective optimization to reduce the peak base moment coefficients about the x- and y-directions, respectively. Reductions of 47％ and 42％ are achieved for the moments about the x- and y-directions, respectively. The third optimization is a multiobjective optimization problem, which aims to simultaneously reduce the two base moments. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N10037 |
| 英文栏目名称： | ANNIVERSARY PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002199 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 10 |
| 页码： | 481-491 |
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