In performance-based architectural design optimization, the design of building massings and façades is commonly separated, which weakens the effectiveness in performance improvement. In response, this study proposes a hybrid massing-façade integrated design generation and optimization workflow to integrate the two elements in an evolutionary design process. Compared with the existing approaches, the proposed workflow emphasizes the diversity of building design generation, with which various combinations of building massing forms and façade patterns can be systematically explored. Two case studies and a corresponding comparison study are presented to demonstrate the efficacy of the proposed workflow. Results show that the optimization can produce designs coupling the potential of building massings and façades in performance improvement. In addition, the optimization can provide information that supports early-stage architectural design exploration. Such information also enables the architect to understand the performance implications associated with the synergy of building massing and façade design.

在基于性能的建筑设计优化中，建筑体量和立面的设计通常是分开的，这削弱了性能提升的有效性。作为回应，本研究提出了一种混合体量-立面集成设计生成和优化工作流程，以将这两个元素集成到一个进化设计过程中。与现有方法相比，所提出的工作流程强调了建筑设计生成的多样性，可以系统地探索建筑体量形式和立面模式的各种组合。提出了两个案例研究和相应的比较研究，以证明所提出的工作流程的有效性。结果表明，优化可以产生结合建筑体量和外墙潜力的设计，以提高性能。此外，优化可以提供支持早期架构设计探索的信息。这些信息还使建筑师能够了解与建筑体量和立面设计的协同作用相关的性能影响。