A Promising Approach in the World: Tensile Structures Roofing
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Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Kırıkkale Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Civilengineering roof systems for outdoor environments find use in bazaars, car parkareas, outdoor sport facilities and places built to protect people or theirgoods from environmental effects such as sun and heavy rain. Therefore, suchroofing systems have great amount of application and each country spends hugevolumes of materials to build these roof systems to improve life quality ofpeople in cities. Thus, it is evident that further research on these civilengineering structures has the potential to decrease the cost of these roofsystems and build more efficient ones. Generally these roof systems aremanufactured employing structural steel material. As is well known, steel haspromising mechanical properties such as high strength and high stiffness whichcan be exploited in structures that expected to receive very high magnitude ofloadings, such as earthquake resistant buildings. However, there also existsome disadvantages of completely using steel in these roof systems. Forinstance, due to unit weight of material the roofs manufactured using steel arevery heavy. So, construction process requires significant labour and time. Alsosteel construction is an expensive process considering measure of covered areafor outdoor roof systems. Moreover, these kinds of roofs manufactured usingcompletely steel are not flexible in use, that is to say, when it isunnecessary for some period of time it is not possible to remove the roofcovering and re-cover it when it is necessary again. This paper investigates anovel concept in the world called as “tensile structures” used to cover wideoutdoor areas. This concept actually combines civil engineering designs andsome architectural aspects. Instead of using materials with high stiffness,tensile structures adapt membrane materials to cover wide areas. Cable elementsaccompany those membranes to transmit the internal forces and stresses tostructural columns or ground. Although membrane materials have lower strengthscompared to steel, these structures offer flexibility in use, light coverings,lower costs and faster construction time. Since these structures are builtutilizing membrane materials and cables which support tension forces only,conventional stress office methods are not capable of handling their analysesand designs. Consequently, specific computational methods must be used toperform such designs. In this paper special commercial software is used toinvestigate behaviour of tensile structures. Three different configurations areemployed to cover a wide area. Structural analysis procedures of thoseconfigurations are undertaken and stress distributions in membranes areinvestigated. Discussions pertaining to motivation behind these structures,load carrying capabilities and working principles are provided. Outcomes ofthis study illustrate that these tensile structures have the potential toreplace some applications of steel roofs to lead lighter, flexible, low costand more aesthetic structures for outdoor environments.
Açıklama
Anahtar Kelimeler
Tensile structures, outdoor roofing, structural mechanics
Kaynak
Uluslararası Mühendislik Araştırma ve Geliştirme Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
7
Sayı
3-2
