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The optimization of a truss facade

机译：桁架门面的优化

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This paper presents the study of a facade. One of the aims of the designing team is the minimisation of the weight of the facade. Due to architectural constraints, the geometry of the facade is fixed to a highly statically indeterminate truss. Therefore, the minimisation of the weight of the facade is limited to a section optimisation. The objective function is the indicator of volume. Since the number of members is of the order of 1000, exhaustive search methods are impractical. We used a simple iterative process to find optimal sections. In the first iteration all sections are equal. This allows the forces to flow through the facade as if the facade has a constant stiffness. In the next iterations sections are adapted to the forces that arise from the previous iteration. This method quickly converges to an optimal section layout. The results of this method are corroborated by a genetic algorithm. We find that the truss facade with optimal sections consumes less material than an arch with push rods, that transfer the forces to the arch. Furthermore, the influence of buckling can be ignored.
机译：本文介绍了对立面的研究。设计团队的一个目标是最小化立面的重量。由于建筑限制，外观的几何形状被固定到高度静态的托管。因此，立面重量的最小化限于截面优化。目标函数是体积的指标。由于成员数量为1000，但是详尽的搜索方法是不切实际的。我们使用简单的迭代过程来查找最佳部分。在第一次迭代中，所有部分都是相等的。这允许力流过立面，就像外观一样具有恒定的刚度一样。在下一个迭代部分中，部分适应从前一个迭代中产生的力。该方法很快收敛到最佳部分布局。该方法的结果通过遗传算法证实。我们发现具有最佳部分的桁架外观比带推杆的拱形消耗更少的材料，从而将力传递到拱门。此外，可以忽略屈曲的影响。

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