National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Analysis of membrane structures
Motyčka, Tomáš ; Zajac, Zbyněk (referee) ; Lang, Rostislav (advisor)
This thesis focuses on a comprehensive analysis and design of membrane structures that are one of the most dynamically developing areas in structural engineering. These structures, that are characterised by their ability to cover large spans with a minimum number of supporting elements and provide high levels of natural light due to their translucency, are examined in this thesis from theoretical and practical perspectives. In the theoretical part of the thesis, the basic principles of their design and analysis are described, including detailed A detailed discussion of the materials and technologies used. Special attention is paid to mechanical properties of fabrics, which are crucial for the functionality and durability of these structures. The second chapter deals with the numerical analysis of membrane structures, with an emphasis on the non linear mechanics, the form-finding process for determining the optimal shape of the structure, and methods for calculation of cutting patterns. In the practical part, case studies are presented, including the analysis of prestressed membrane of the Anthropos dance pavilion and the ETFE cushion roof structure. These studies offer insights into the challenges and solutions associated with the design and analysis of membrane structures, including detailed descriptions of the structures, calculation models and load analyses. Specific emphasis is placed on Analysis of the 'ponding' effect, a common cause of failure in these structures.
Construction Stages Analysis of a Membrane Structure with Respect to Wind Load
Zajac, Zbyněk
This paper deals with an analysis of a membrane structure loaded with wind pressure with respect to the construction stages. Modern tools allow analysis of structural response to the prestressing of membrane surfaces in the predefined sequence. So far, analytical models of the membrane structures have been simplified and the sequence of construction has been designed afterwards. This process may lead to the oversized elements, because it is not possible to estimate the structural response to the unexpected load on the structure under construction. Besides, the aim of this paper is to point out the meaning of the construction stages analysis of the membrane structures with respect to the safety on a building site.

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