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Design and analysis of a self-supporting bamboo roof structure applying flexible connections

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The present study investigates a mobile textile bamboo roof structure applying flexible connections. The developed ultralight structural system built with modular space frames, tensile pantographic grids, lashed joints in polyester ropes and biocomposites, presents a self-supporting behavior. Prefabricated hinged lashed connections (HLC) designed for the structure allow a deployable mechanism, free of torsion stresses in the bamboo bars. Nonlinear analysis using the finite element method (FEM) presents forces applied in the structure. Static loading patterns for wind loads were investigated and showed that forces can be safety absorbable by the structural members. A numerical model, physical models and full-scale prototypes, simultaneously, investigated the complex mechanical behavior of the bamboo structure, drafting its overall operation and introducing design guidelines.

Keywords: Bamboo; deployable; design; hinged lashed connection (HLC); pantographic; roof structure; self-supporting space frame (SSF); structural analysis; textile; ultralight

Document Type: Research Article

Affiliations: 1: Bambutec Design and Pontifical Catholic University of Rio de Janeiro PUC-Rio, Arts & Design Department. R. Marquâs de S. Vicente 225, Gávea, Rio de Janeiro, Brazil, Email: [email protected] 2: Federal University of Minas Gerais UFMG, Structural Engineering Department (DEES), Email: [email protected] 3: Bambutec Design, Rio de Janeiro, Brazil 4: Pontifical Catholic University of Rio de Janeiro PUC-Rio, Arts & Design Department

Publication date: July 16, 2018

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