Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Managing Wind Risk on Long Span Roofs ; Management des Windrisikos bei weitgespannten Überdachungen
A number of modern structures characterized by a relevant impact and elegance often coupled with lightness and irregular shapes are dramatically exposed to the wind aerodynamic action, which becomes a key factor in their safety assessment. These structures are involved into a global and complex design process in which players like the environment and social sciences join engineering in order to guarantee an optimal result under several aspects, not the last the economical aspect. In this background, it is not possible trusting into unreliable deterministic considerations, where the over-engineering would assure the result. The attention is now shifted to overall frameworks of Performance-Based Design aimed to specific performance targets and their optimization. In particular, the criteria to ensure the achievement of the results are expressed in terms of risk of failure. This work of thesis presents a general framework for calculating all the possible structural damages and subsequently economic losses after a natural catastrophic event. The framework is adjusted and applied to the specific case study of the covering of the Stadium of Braga in Portugal, where the hazard of a windstorm, the loads that the latter enforces on the covering, the structural response, the resulting damages and other consequences are hierarchically calculated. Particular emphasis, and original contribution of the work, is paid on the evaluation of the dynamic response of the structure. Pressure fluctuations on buildings produced by storms have a complex temporal and spatial organization and their study, keeping under control the whole physical phenomena, is quite difficult. Accordingly, some suitable tools like the orthogonal decomposition are adopted in order to handle the huge amount of data. Moreover a consistent and operative procedure aimed at enhancing the assessment of the aerodynamic wind pressure on the covering is provided. This work addresses a fundamental topic for the risk assessment; the results achieved by the duly ...
Managing Wind Risk on Long Span Roofs ; Management des Windrisikos bei weitgespannten Überdachungen
A number of modern structures characterized by a relevant impact and elegance often coupled with lightness and irregular shapes are dramatically exposed to the wind aerodynamic action, which becomes a key factor in their safety assessment. These structures are involved into a global and complex design process in which players like the environment and social sciences join engineering in order to guarantee an optimal result under several aspects, not the last the economical aspect. In this background, it is not possible trusting into unreliable deterministic considerations, where the over-engineering would assure the result. The attention is now shifted to overall frameworks of Performance-Based Design aimed to specific performance targets and their optimization. In particular, the criteria to ensure the achievement of the results are expressed in terms of risk of failure. This work of thesis presents a general framework for calculating all the possible structural damages and subsequently economic losses after a natural catastrophic event. The framework is adjusted and applied to the specific case study of the covering of the Stadium of Braga in Portugal, where the hazard of a windstorm, the loads that the latter enforces on the covering, the structural response, the resulting damages and other consequences are hierarchically calculated. Particular emphasis, and original contribution of the work, is paid on the evaluation of the dynamic response of the structure. Pressure fluctuations on buildings produced by storms have a complex temporal and spatial organization and their study, keeping under control the whole physical phenomena, is quite difficult. Accordingly, some suitable tools like the orthogonal decomposition are adopted in order to handle the huge amount of data. Moreover a consistent and operative procedure aimed at enhancing the assessment of the aerodynamic wind pressure on the covering is provided. This work addresses a fundamental topic for the risk assessment; the results achieved by the duly ...
Managing Wind Risk on Long Span Roofs ; Management des Windrisikos bei weitgespannten Überdachungen
Olivato, Giuseppe (Autor:in) / Dinkler, Dieter
06.05.2010
Hochschulschrift
Elektronische Ressource
Englisch
Managing Wind Risk on Long Span Roofs ; Management des Windrisikos bei weitgespannten Überdachungen
| BASE | 2010
Managing wind risk on long span roofs
| UB Braunschweig | 2010