Shear wall layout optimization for conceptual design of tall buildings
Shear wall layout optimization for conceptual design of tall buildings
复制标题
高层建筑概念设计中剪力墙布置的优化
DOI：
10.1016/j.engstruct.2017.02.059
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发表时间：
2017-06
影响因子：
5.5
通讯作者：
Yu Zhang;C. Mueller
中科院分区：
文献类型：
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作者：
Yu Zhang;C. Mueller
在高层建筑的设计中，抵抗风和地震荷载的侧向体系通常在结构工程中占主导地位，因此，优化的侧向体系设计对于提高材料的使用效率非常重要。在基于剪力墙的建筑中，传统的设计过程从建筑师生成平面图开始，然后将平面图传递给结构工程师，结构工程师根据知识和先前的经验，尝试放置剪力墙以平衡相互冲突的要求：最小的结构重量、令人满意的结构强度和适用性、符合建筑布局。此设计过程可能缓慢且效率低下，需要一种反复尝试的方法，而这种方法不太可能产生最佳解决方案。本文介绍的工作旨在通过一个包括地基结构程序制定、改进的进化算法和创新的计算技术的优化系统来加速这一过程。与现有的只关注结构性能或建筑布局的工作不同，本研究将两者结合在一起。介绍了剪力墙平面布置的一种高效计算设计方法。该方法在扭转、弯曲强度、剪切强度、漂移、开孔和可访问性的约束下将结构重量最小化。它可以从楼层平面设计的一开始就应用，也可以在生成建筑楼层平面之后应用。本文通过各种案例研究论证了这种方法的潜力。主要贡献包括地基结构法的新应用、快速和稳健的改进进化算法以及简化的钢筋混凝土设计自动计算系统。
In the design of tall buildings, the lateral system that resists wind and seismic loading usually dominates the structural engineering effort; therefore, optimal lateral system design is important for material efficiency. In a shear-wall-based building, the conventional design process starts with an architect generating a floor plan, which is then passed to a structural engineer, who, based on knowledge and prior experience, tries to place shear walls to balance conflicting requirements: minimum structural weight, satisfactory structural strength and serviceability, conformity to architectural layout. This design process can be slow and inefficient, requiring a trial-and-error approach that is unlikely to lead to the best solution. The work presented in this paper intends to accelerate the process with an optimization system involving a ground structure program formulation, a modified evolutionary algorithm, and innovative computational techniques. Unlike existing work that focuses either exclusively on structural performance or architectural layout, this research integrates both. An efficient computational design methodology for shear wall layout in plan is introduced. The method minimizes structural weight with constraints on torsion, flexural strength, shear strength, drift, and openings and accessibility. It can be applied from the very beginning of floor plan design or after generating an architectural floor plan. This paper demonstrates the potential of this approach through a variety of case studies. Key contributions include a novel application of the ground structure method, a fast and robust modified evolutionary algorithm, and a simplified auto-calculation system for reinforced concrete design.