WIT Press


Robustness: Key Property Of Modern Structures

Price

Free (open access)

Paper DOI

10.2495/SAFE110261

Volume

117

Pages

12

Page Range

289 - 300

Published

2011

Size

2,542 kb

Author(s)

M. Sykora, M. Holický & J. Markova

Abstract

Recent developments of high-performance materials, construction technologies and methods of structural analysis facilitate design of increasingly complex and slender structures. These structures may be vulnerable to unfavourable effects of extreme events including man-made hazards. In most cases, failures of structures exposed to such events may hardly be completely prevented. However, for sufficiently robust structures, failure consequences can be significantly reduced and safety of occupants essentially increased. The paper summarises present achievements in present codes and technical literature. Appropriate structural models, exposure conditions and construction measures for design of new structures and assessment of existing structures are discussed. It appears that structural robustness can become a key concept in design of modern structures. Despite significance of structural robustness, its quantification and methods of assessment are not yet sufficiently developed and further improvements are urgently needed. Available experience indicates that decisions concerning structural robustness can be efficiently based on methods of risk assessment and on the theory of reliability. Keywords: construction safety, robustness, risk analysis. 1 Introduction Developments in high-performance materials, construction technologies and methods of structural analysis enable to design increasingly complex and slender structures. Such structures may be vulnerable to unfavourable effects of extreme events, human errors or excessive settlements. Failures of structures exposed to extreme events can hardly be completely prevented. However, in case of sufficiently robust structures, consequences can be significantly reduced and safety of occupants increased. Despite many significant theoretical and technological advances, structural robustness is still an

Keywords

construction safety, robustness, risk analysis