{"id":1292,"date":"2021-07-04T05:09:19","date_gmt":"2021-07-04T05:09:19","guid":{"rendered":"http:\/\/bambutec.com.br\/?p=1292"},"modified":"2023-07-21T21:46:06","modified_gmt":"2023-07-21T21:46:06","slug":"design-and-analysis-of-a-self-supporting-bamboo-roof-structure-applying-flexible-connections","status":"publish","type":"publicacao","link":"https:\/\/bambutec.com.br\/en\/publicacao\/design-and-analysis-of-a-self-supporting-bamboo-roof-structure-applying-flexible-connections\/","title":{"rendered":"Design and analysis of a self-supporting bamboo roof structure applying flexible connections"},"content":{"rendered":"<p>Proceedings of the IASS Symposium, Creativity in Structural Design, Massachusetts Institute of Technology (MIT), Boston, USA, 2018. <a href=\"https:\/\/www.ingentaconnect.com\/content\/iass\/piass\/2018\/00002018\/00000020\/art00021\" target=\"_blank\" rel=\"noopener noreferrer\">Access<\/a>\u00a0&gt;&gt;<\/p>\n<p>M. Seixas; L.E. Moreira; J. Bina; J.L.M. Ripper<\/p>\n<p><strong>Abstract: The creep behavior of bamboo culms under long-term loadings was investigated in the present work.\u00a0Phyllostachys aurea\u00a0bamboo samples were subjected to four-point flexural creep tests at loads corresponding to 30%, 50%, and 80% of the bamboo's short-term bending strength. Creep and recovery behavior were evaluated for each loading level at room temperature over 398\u00a0days, allowing the attainment of primary, secondary, and tertiary creep stages. The failure of one creep test sample occurred at 73\u00a0MPa, and the failure mode due to creep was described. Creep mechanisms assessed included node flexibility, cylindrical bending, and shear. Node flexibility contributed 50\u201374% of total deflection, cylindrical bending contributed 24\u201348%, while shear contributed less than 2%. A four-element Burgers mechanical model was proposed, matching the experimental results for all loading levels. A viscous coefficient parameter of 4.3 to 30\u00d7\u2009103\u00a0GPa.day was inferred, corresponding to the linear dashpot\u00a0n1. These models estimated the bamboo culm deflection over time and predicted failure at a 40% increase in deflection. Overall, this study provided comprehensive insights into the long-term structural behavior of bamboo culms for use in design and engineering applications.<\/strong> The present study investigates a mobile textile bamboo roof structure applying flexible connections. This ultralight structural system built with modular space frames, tensile pantographic grids and lashed joints in polyester ropes and biocomposites, presents a self-supporting behavior. Prefabricated hinged lashed connections (HLC) designed for the structure present a deployable mechanism, free of torsion stresses in the bamboo bars. The study presents research results on the structural design and analysis of the developed self-supporting bamboo structure for the tropical climate. 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.<\/p>","protected":false},"excerpt":{"rendered":"<p>Proceedings of the IASS Symposium, Creativity in Structural Design, Massachusetts Institute of Technology (MIT), Boston, USA, 2018. Clique para acessar\u00a0&gt;&gt; M. Seixas; L.E. Moreira; J. Bina; J.L.M. Ripper Resumo: The present study investigates a mobile textile bamboo roof structure applying flexible connections. This ultralight structural system built with modular space frames, tensile pantographic grids and [&hellip;]<\/p>","protected":false},"featured_media":1298,"template":"","format":"standard","categories":[52],"tags":[16,38,30,93,37,85,84,83,94,86],"class_list":["post-1292","publicacao","type-publicacao","status-publish","format-standard","has-post-thumbnail","hentry","category-publicacoes","tag-bamboo","tag-deployable","tag-design","tag-hinged-lashed-connection-hlc","tag-pantographic","tag-roof-structure","tag-self-supporting-space-frame-ssf","tag-structural-analysis","tag-textile","tag-ultralight"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao"}],"about":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/types\/publicacao"}],"version-history":[{"count":15,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1292\/revisions"}],"predecessor-version":[{"id":1893,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/publicacao\/1292\/revisions\/1893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/media\/1298"}],"wp:attachment":[{"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/media?parent=1292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/categories?post=1292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bambutec.com.br\/en\/wp-json\/wp\/v2\/tags?post=1292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}