Geometrical and structural design development of an active-bending structure from natural fibre pultruded profiles: The LightPRO shell

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Developments in the Built Environment Pub Date : 2024-11-19 DOI:10.1016/j.dibe.2024.100577

Evgenia Spyridonos , Yanan Guo , Marta Gil Pérez , Hanaa Dahy

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Abstract

The utilisation of bio-based materials has significantly increased in recent years, driven by a growing awareness of environmentally friendly alternatives in the construction industry. This study introduces innovative natural fibre pultruded profiles for load-bearing applications in structural systems. By employing pultrusion technology with flax fibres and customised plant-based matrix, linear and unidirectional biocomposite profiles were developed. These profiles were used in the creation of LightPRO Shell, an active-bending structure combining biocomposite profiles with a membrane outer skin, demonstrating their mechanical properties and suitability for such applications. The paper focuses on the geometrical and structural design development of the structure employing computational design tools for optimisation, ensuring design parameters and performance requirements were met. The final structure, a 10-m span doubly curved gridshell, features a continuous perimeter beam and consists of 44 profiles ranging from 6 to 12.5 m, showcasing the potential of natural fibre biocomposites as sustainable alternatives in construction.

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利用天然纤维拉挤型材进行主动弯曲结构的几何和结构设计开发：LightPRO 外壳

近年来，由于建筑行业对环保型替代品的认识不断提高，生物基材料的使用量大幅增加。本研究介绍了用于结构系统承重应用的创新型天然纤维拉挤型材。通过采用亚麻纤维拉挤技术和定制的植物基基体，开发出了线性和单向生物复合材料型材。这些型材被用于制作 LightPRO Shell，这是一种将生物复合材料型材与薄膜外皮结合在一起的主动弯曲结构，证明了它们的机械性能以及在此类应用中的适用性。论文重点介绍了该结构的几何和结构设计开发，采用计算设计工具进行优化，确保满足设计参数和性能要求。最终的结构是一个跨度为 10 米的双曲面网格壳，具有连续的周边梁，由 44 个 6 米到 12.5 米不等的型材组成，展示了天然纤维生物复合材料作为可持续建筑替代品的潜力。

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.