EXPERIMENTAL EVALUATION AND SIMULATION OF GEODESIC STRUCTURES OF BAMBOO RE-INFORCED WITH TIES
DSpace Repository
EXPERIMENTAL EVALUATION AND SIMULATION OF GEODESIC STRUCTURES OF BAMBOO RE-INFORCED WITH TIES
| Title: | EXPERIMENTAL EVALUATION AND SIMULATION OF GEODESIC STRUCTURES OF BAMBOO RE-INFORCED WITH TIES; SIMULAÇÃO E AVALIAÇÃO EXPERIMENTAL DE ESTRUTURAS GEODÉSICAS DE BAMBU REFORÇADAS COM CABOS |
| Author: | Ostapiv, Fabiano; Castro, Gustavo Correa; Stahlschmidt, Joamilton; Ostapiv, Gabriel |
| Description: |
The objective of this work is to analyze the behavior of geodesic structures built with cylindrical bamboo bars reinforced with nylon cables by means of loading tests and computer simulation. Geodesic domes were modeled in the shape of a half truncated icosahedron and was built with solid commercial bamboo bars Phyllostachys pubescens,with 4 mm in diameter and 175 mm in length. ANSYS computer simulation software was used to model three-dimensionally and to simulate a dome structure under the action of vertical loads, with reinforcement of cables and also to simulate a wind action on a solid geodetic. With a reformed structure, loads were made, for each load was measured or vertical displacement of the upper surface in relation to the base. The numerical model was simulated with the same chargers and, afterwards, comparisons were made between the numerical results and the experiments. The tests show hat the structure supports a load of 38 times its own weight, presenting a great deflection without breaking. Resistant to comparison or double the final vertical load, with only 40% deflection. Published by the structure without reinforcement, showing the effectiveness of using nylon cables as tied reinforcement. Such behavior was predicted by numerical simulation. After carrying out the usage tests and running a computer simulation, it was possible to locate the regionswith the highest stresses and to identify the possible break points of the structure. In this work it was also simulated or the behavior of the geodesic structure covered by a shell, under a wind action with different movements, showing the distribution of the pressure exerted by the flow of a structure. O objetivo deste trabalho é analisar o comportamento do reforço feito com cabos de nylon trançado feito em estruturas geodésicas construída com barras de bambu cilíndricas e maciças unidas com resina de poliéster com carga mineral. As cúpulas geodésicas estudadas têm a forma de meio icosaedro truncado e foram construídas com barras comerciais de bambu Phyllostachys pubescens com 4mm de diâmetro e comprimento de 175mm. O software de simulação de engenharia ANSYS foi usado para desenhar e simular a estrutura da cúpula sob carga, com e sem o reforço de cabos. O modelo geodésico construído e testado através de carregamento vertical, mostrou resultados de deflexão no regime elástico muito semelhantes ao comportamento previsto pelo modelo computacional. Enquanto a estrutura sem reforço apresentou grandes deformações e resistiu 14,8 vezes o seu próprio peso com comportamento linear e 23 vezes o seu próprio peso sem ruptura; a estrutura reforçada com cabos amarrados resistiu comparativamente o dobro de carga vertical final com apenas 40% da deflexão apresentada pela estrutura sem reforço, mostrando a efetividade do uso dos cabos de nylon como reforço amarrado. Comportamento previsto pela simulação numérica. |
| URI: | https://repositorio.ufsc.br/handle/123456789/246494 |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
| 3867-Article Text-14111-1-10-20200617.pdf | 2.059Mb |
View/ |
This item appears in the following Collection(s)
-
Mix Sustentável [625]
Periódico Científico Interdisciplinar: Arquitetura e Urbanismo, Design e Engenharias
