Journal: CAADRIA

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Association for Computer Aided Architectural Design Research in Asia

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2020 - 20255
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Publications1 - 5 of 5
  • Automatic Assembly of Jointed Timber Structure using Distributed Robotic Clamps
    Item type: Conference Paper
    Leung, Pok Yin; Apolinarska, Aleksandra Anna; Tanadini, Davide; et al. (2021)
    CAADRIA ~ PROJECTIONS – Proceedings of the 26th International Conference of the Association for Computer-Aided Architectural Design
    This paper presents a novel robotic assembly method for timber structures with integral timber joints, specifically, crossed-half-lap joints. The proposed method uses a set of custom-built, remote-controlled, high-force robotic clamps to operate in collaboration with an industrial robotic arm to overcome challenges of robotic timber joint assembly, such as providing large assembly forces and correcting misalignments. This method enables automatic assembly of non-repetitive and spatially connected timber structures. We developed custom software for modelling, visualization and feasibility-checking for structures compatible with the proposed assembly method. As a proof of concept, we designed and robotically assembled a spatial frame structure (4.8 x 3.0m footprint, 3.4m tall) comprising 40 pieces of 100x100mm profile timber elements.
  • Generative Modelling with Design Constraints – Reinforcement Learning for Object Generation
    Item type: Conference Paper
    Akizuki, Yuta; Bernhard, Mathias; Kladeftira, Marirena; et al. (2020)
    CAADRIA ~ RE: Anthropocene, Design in the Age of Humans – Proceedings of the 25th CAADRIA Conference
  • Advancing Precision
    Item type: Conference Paper
    Amicarelli, Fabio; Quadranti, Elia; Paglia, Christian; et al. (2025)
    CAADRIA ~ Architectural Informatics: Proceedings of the 30th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2025), Volume 2
    Standardization in concrete construction has reduced design flexibility and increased environmental impact. This research addresses the challenges associated with the construction of highly customized building elements, such as staircases, by combining three innovations: flexible and recyclable paper-based formwork, augmented reality (AR)-guided rebar assembly, and a concrete mix using recycled aggregates. These innovations are integrated for the construction of a real-size demonstrator consisting of three precast stair steps. Structural optimization methods, computational tools, and digital fabrication processes are used for the design, production, testing, and assessment of the demonstrator. Results indicate that the combination of paper-based formwork, AR-guided rebar assembly, and recycled concrete significantly reduces environmental impact, improves production efficiency, and enhances design flexibility. Comparative analysis reveals a 50% reduction in concrete usage and a 32% decrease in CO2-equivalent emissions relative to conventional precast stairs. The methodology presented is applicable for new and existing building projects and opens new pathways for further integration of digital technologies in concrete construction workflows.
  • Enabling Component Reuse From Existing Buildings Using Machine Learning - Using Google Street View to Enhance Building Databases
    Item type: Conference Paper
    Raghu, Deepika; Markopoulou, Areti; Marengo, Mathilde; et al. (2022)
    CAADRIA ~ Proceedings of the 27th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2022)
    Intense urbanization has led us to rethink construction and demolition practices on a global scale. There is an opportunity to respond to the climate crisis by moving towards a circular built environment. Such a paradigm shift can be achieved by critically examining the possibility of reusing components from existing buildings. This study investigates approaches and tools needed to analyse the existing building stock and methods to enable component reuse. Ocular observations were conducted in Google Street View to analyse two building-specific characteristics: (1) façade material and (2) reusable components (window, doors, and shutters) found on building facades in two cities: Barcelona and Zurich. Not all products are equally suitable for reuse and require an evaluation metric to understand which components can be reused effectively. Consequently, tailored reuse strategies that are defined by a priority order of waste prevention are put forth. Machine learning shows promising potential to visually collect building-specific characteristics that are relevant for component reuse. The data collected is used to create classification maps that can help define protocols and for urban planning. This research can upscale limited information in countries where available data about the existing building stock is insufficient.
  • Robotic 3D Printing of Mineral Foam for a Lightweight Composite Facade Shading Panel
    Item type: Conference Paper
    Bedarf, Patrick; Martinez Schulte, Dinorah; Senol Güngör, Ayca; et al. (2021)
    CAADRIA ~ PROJECTIONS – Proceedings of the 26th International Conference of the Association for Computer-Aided Architectural Design
    This paper presents the design and fabrication of a lightweight composite facade shading panel using 3D printing (3DP) of mineral foams. Albeit their important role in industrial construction practice as insulators and lightweight materials, only little research has been conducted to use foams in 3DP. However, the recent development of highly porous mineral foams that are very suitable for extrusion printing opens a new chapter for development of geometrically complex lightweight building components with efficient formwork-free additive manufacturing processes. The work documented in this paper was based on preliminary material and fabrication development of a larger research endeavor and systematically explored designs for small interlocking foam modules. Furthermore, the robotic 3D Printing setup and subsequent processing parameters were tested in detail. Through extensive prototyping, the design space of a final demonstrator shading panel was mapped and refined. The design and fabrication process is documented and shows the potential of the novel material system in combination with fiber-reinforced ultra-high performance concrete (UHPC). The resulting composite shading panel highlights the benefits of using mineral foam 3DP to fabricate freeform stay-in-place formwork for lightweight facade applications. Furthermore, this paper discusses the challenges and limitations encountered during the project and gives a conclusive outlook for future research.
Publications1 - 5 of 5