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## Ocena możliwości wykorzystania konstrukcji tensegrity w budownictwie mostowym

### Andrzej Kasprzak

#### Abstract

The concept of tensegrity was first described about 50 years ago. It refers to a particular type of structure, in which the compression and tensile components stabilize each other, despite the existence of mechanisms in the structure. A question, whether and to what extent it is possible to use the idea of tensegrity in building constructions, especially in bridges, was raised in the dissertation. To answer it, the author elaborated on both theoretical basis and practical aspects of the design of this type of structures. Two own definitions, based on mechanics of structures are presented. These are “pure tensegrities” and “structures having tensegrity features” definitions. The main features of tensegrity, such as the existence of infinitesimal mechanisms and self-stress states were defined. This made it possible to develop a mathematical description of this type of structures and to propose a new form-finding method. Computational methods appropriate for aforementioned properties were chosen. Static and dynamic properties of the basic tensegrity modules were analyzed using the selected methods. The possibility of combining modules for the use in bridge structures was discussed, as well as the impact of connection type on the properties of thus obtained structures. The most important technological issues associated with the use of tensegrity in bridges were discussed. The response of selected structures on the static and dynamic loads was examined in the context of their use in construction of footbridges. Existing projects and realizations of bridges called tensegrity were classified and evaluated. The analysis allowed to conclude, that there is a possibility of using tensegrity in bridge structures, limited mainly to the structures having tensegrity features. The use of “pure tensegrities” may be justified in the case of special-purpose structures, such as adaptive and deployable bridges.
Record ID
WUTa5d90e6a365e41869e0d8574e96b54d4
Diploma type
Doctor of Philosophy
Author
Andrzej Kasprzak Andrzej Kasprzak,, Faculty of Civil Engineering (FCE)
Title in Polish
Ocena możliwości wykorzystania konstrukcji tensegrity w budownictwie mostowym
Language
(pl) Polish
Certifying Unit
Faculty of Civil Engineering (FCE)
Discipline
construction / (technology domain) / (technological sciences)
Status
Finished
Start date
19-04-2013
Defense Date
24-06-2014
Title date
25-06-2014
Supervisor
Internal reviewers
Wojciech Antoni Radomski Wojciech Antoni Radomski,, The Institute of Roads and Bridges (FCE/IRB)Faculty of Civil Engineering (FCE)
External reviewers
Krzysztof Wilde Krzysztof Wilde,, External affiliation of publication: Silesian University of Technology
Pages
231
Keywords in English
xxx
Abstract in English
The concept of tensegrity was first described about 50 years ago. It refers to a particular type of structure, in which the compression and tensile components stabilize each other, despite the existence of mechanisms in the structure. A question, whether and to what extent it is possible to use the idea of tensegrity in building constructions, especially in bridges, was raised in the dissertation. To answer it, the author elaborated on both theoretical basis and practical aspects of the design of this type of structures. Two own definitions, based on mechanics of structures are presented. These are “pure tensegrities” and “structures having tensegrity features” definitions. The main features of tensegrity, such as the existence of infinitesimal mechanisms and self-stress states were defined. This made it possible to develop a mathematical description of this type of structures and to propose a new form-finding method. Computational methods appropriate for aforementioned properties were chosen. Static and dynamic properties of the basic tensegrity modules were analyzed using the selected methods. The possibility of combining modules for the use in bridge structures was discussed, as well as the impact of connection type on the properties of thus obtained structures. The most important technological issues associated with the use of tensegrity in bridges were discussed. The response of selected structures on the static and dynamic loads was examined in the context of their use in construction of footbridges. Existing projects and realizations of bridges called tensegrity were classified and evaluated. The analysis allowed to conclude, that there is a possibility of using tensegrity in bridge structures, limited mainly to the structures having tensegrity features. The use of “pure tensegrities” may be justified in the case of special-purpose structures, such as adaptive and deployable bridges.
Thesis file
• File: 1
Andrzej Kasprzak.pdf
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Citation count
2

Uniform Resource Identifier
https://repo.pw.edu.pl/info/phd/WUTa5d90e6a365e41869e0d8574e96b54d4/
URN
urn:pw-repo:WUTa5d90e6a365e41869e0d8574e96b54d4

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