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A preference-based multi-objective building performance optimization method for early design stage

Building Simulation 2021年第3期14卷 477-494页

作者： Borong Lin Hongzhong Chen Yanchen Liu Qiushi He Ziwei Li Department of Building Science Tsinghua UniversityBeijing 100084China College of Civil Engineering Guangzhou UniversityGuangzhou 510006China College of Architecture&Urban Planning Beijing University of TechnologyBeijing 100124China

A large number of cases show that the multi-objective optimization method can significantly improve building *** method for multi-objective building performance optimization(BPO)design has achieved rapid development in recent ***,the BPO method still needs to be ***,weak interaction between the optimization process and the decision-making process results in low optimization efficiency,which limits the widespread application of the optimization method in early design *** this paper,a new interactive BPO mode is explored to strengthen the interaction between the optimization process and decisionmaking process,and a preference-based multi-objective BPO method is proposed to account for designers'decision preferences during the optimization process,making the objective more controllable,improving the optimization efficiency and ensuring the diversity of ***,this paper illustrates the proposed method in detail,defines the concept of performance preference,expounds the flow of the preference-based multi-objective optimization algorithm,and proposes three indicators to evaluate the algorithm,which includes convergence speed,preference satisfaction rate,and diversity ***,through testing and comparison,it is found that the proposed preference-based algorithm has advantages over the non-preference optimization algorithm(represented by the NSGA-II algorithm).The proposed method leads to faster convergence and higher preference satisfaction,so it is more suitable for the BPO process in the early design ***,the proposed method can achieve 100%preference satisfaction rate with only 2400 simulations,while the non-preference method can only achieve 20%preference satisfaction rate after 5800 *** this paper,a preference-based multi-objective BPO method is proposed to make the optimization process closely interact with the decision-making process and make the design preferences be accoun

关键词： building performance optimization(BPO) preference oriented design Pareto-front early design stage

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Exploring the synergy of building massing and façade design through evolutionary optimization

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Frontiers of Architectural Research 2022年第4期11卷 761-780页

作者： Likai Wang Han Zhang Xuehan Liu Guohua Ji School of Architecture and Urban Planning Nanjing UniversityNanjing 210093China

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.

关键词： Performance-based design Building massing Façade Daylighting Solar irradiation Discomfort glare design exploration early design stage design optimization EvoMass

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A graphical multi-objective performance evaluation method with architect-friendly mode

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Frontiers of Architectural Research 2021年第2期10卷 420-431页

作者： Lingjiang Huang Changchao Fan Zhiqiang(John)Zhai Department of Architecture Wuhan UniversityWuhan 430072China Department of Civil Environmental and Architectural EnsineeringUniversity of ColoradoBoulderCO 80309USA

In response to the inadaptation and difficulties for architects in the use of engineering simulation tools and optimization methods,a method is proposed for graphical performance evaluation achieved with a developed plugin for Grasshopper as an architect-friendly tool to support design exploration in early *** proposed method follows forward work-flow for interactive feedback of performance,focusing on thermal and visual comfort upon a variety of design options.A case study of shading design is *** demonstration illustrated an intuitive and graphical process for qualitative performance evaluation,which is assisted by an overall ratio ranking the integrated performance of design options for a quantitative *** with engineering optimization methods that focus on optimal performance-based solutions,the proposed method presented graphical feedbacks on design performance that are interactive with the designer for performance-informed decision *** this way,the proposed method stimulates the effective and positive application of engineering tools and judgment at the early stage of iterative design.

关键词： Performance evaluation early design stage Shading Thermal comfort Visual comfort

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Parametric wind design

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Frontiers of Architectural Research 2018年第3期7卷 383-394页

作者： Lenka Kormarrikova Henri Achten Milos Kopriva Stanislav Kmet Faculty of Civil Engineering Institute of Architectural Engineering Technical University of Kosice Vysokoskolska 4 042 00 Slovakia Faculty of Architecture Czech Technical University in Prague Thakurova 9 160 00 Czech Republic Faculty of Civil Engineering Czech Technical University in Prague Thakurova 7 160 00 Czech Republic Faculty of Civil Engineering Institute of Structural Engineering Technical University of Kosice Vysokoskolska 4 042 00 Slovakia

Although gradual, the changes in the weather patterns are also noticeable and impactful to architectural design. If the local microclimate is taken into account early in the conceptual stage of design, the longevity of the ultimate structure can be greatly enhanced, despite challenging environmental factors. Parametric designing enables to discover the optimal architectural shape based on specific weather data. The paper intends to investigate how this design approach, coupled with Computational Fluid Dynamics simulations, can be used to create a wind-induced architecture. Both the benefits and the limitations of this approach are explored in detail. The interaction between an architectural shape and wind flow is tested in a study called ‘FlowBrane’. The process of （1） designing a parametrically changeable geometry, （2） testing its behavior in the wind, and （3） evaluating the results allows looping back to the initial geometric design, continuing to improve the design and ultimately the performance of the architecture in the specific wind conditions of the chosen site. However, the need to test multiple geometries separately and to adjust the wind simulation for each test （and for every wind direction） remains a disadvantage that should be addressed in further research.

关键词： Parametric architecture Computational Fluid Dynamics Wind Performance early design stage

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