As cascas têm uma vasta gama de aplicações em Engenharia Civil, desde torres, postes, torres eólicas chaminés para reservatórios, tais como silos, tanques e biodigestores, assim como em fundações por estacas e estruturas de proteção. A estrutura em casca oferece grande resistênciapara a quantidade de material nela aplicada, e é altamente otimizada para cada aplicação especifica.
No entanto, esta eficiência e otimização trazem consigo a suscetibilidade a falhas por encurvadura, o maior e mais complexo comportamentoa qualquer classe de estrutura.
Este livro fornece ao projetista um guia completo para o projeto de grandes estruturas metálicas em casca, usando metodologias de cálculo, algumas recorrendo a cálculo computacional de várias complexidades. Baseia-se rigorosamente na norma líder mundial de projeto estrutural em casca, Eurocódigo 3 Parte 1.6 (PT 1993/01/06), a qual inclui regras gerais extensivas para o universo das cascas metálicas.
Este livro expõe matérias relativas a cálculo de cascas, assim como expõe detalhadamente as regras enunciadas no EC3-1-6. Utilizando este livro, o projestista pode adquirir a orientação para projetar grandes cascas metálicas para uma ampla gama de aplicações em Engenharia Civil.
PART I:
General recommendations for design against buckling
1. Introduction 01
2. Shell buckling behaviour and design concepts
3. Scope, conventions, definitions, units, symbols and
sign conventions 02
4. Modelling of the shell 03
5. Material assumptions 04
6. Geometric tolerances and imperfections 05
7. Rules for the plastic limit state assessment 06
8. Rules for the buckling limit state assessment using design
by global numerical an-alysis 07
9. Rules for the buckling limit state assessment using
stress design 08
PART II:
Recommendations for particular shells
10. Cylindrical shells of constant wall thickness under general loading 09
11. Cylindrical shells of stepwise variable wall thickness 10
12. Cylindrical shells under wind loading 11
13. Conical shells and truncated conical shells under general loading 12
14. Liquid–filled conical shells supported from below 13
15. Spherical shells under uniform external pressure 14
16. Toriconical and torispherical shells under uniform external and
internal pressure 15
17. Cylindrical shells with ring stiffeners under uniform
external pressure 16
18. Cylindrical shells with longitudinal stiffeners under uniform
meridional compres-sion 17
19. Conical shells with longitudinal stiffeners under meridional
compression 18
20. Saddle or ring supported cylindrical shells 19
John Michael Rotter was born in Chesterfield, England on 31 October 1948. He was educated at Clare College, Cambridge University, graduating with a first in the Mechanical Sciences Tripos in 1970.
Michael has held appointments as Visiting Professor at the Technical University of Graz, Austria, the Technical University of Vienna, Austria, the Institut National des Sciences Appliquées de Lyon, France, the Henri Poincare Université de Nancy, France, and the Hong Kong Polytechnic University, China.
Michael has been awarded fellowships by the Institution of Civil Engineers, the Institution of Structural Engineers, the American Society of Civil Engineers, and the Institution of Engineers, Australia. More significantly, he was elected Fellow of the Royal Academy of Engineering in 2004 and Fellow of the Royal Society of Edinburgh in 2005.
Herbert Schmidt
1957-1962 civil engineering studies at TU Braunschweig, thereafter bridge design engineer with MAN Gustavsburg,
1965-1977 scientific assistant, later on chief engineer at the Institute for Steel Structures at TU Braunschweig,
1970 obtaining a doctor’s degree (Dr.-Ing),
1974/75 visiting research fellow at Lehigh University / USA,
1978-1981 professor at Stuttgart University, head of construction engineering division of Otto-Graf-Institute (FMPA Baden-Württemberg),
1982-2001 professor for steel structures at Essen University,
1989-2004 approved proof engineer for structural steel design, member in many German and European expert and working committees,
1995 co-founder of the engineering consultants partnership Prof. Schmidt & Partner.
Two decades of dedicated and productive teaching and research activities followed in Essen. Under the guidance of Prof. Schmidt, 16 doctoral theses and a great number of publications and conference papers were produced (publication list IML UniDuE). Many of the results being worked out in Essen found their way into engineering handbooks, recommendations and standards. H. Schmidt contributed significantly to the development of the series of standards DIN 18800. In 1990 and 1998 he stayed as a guest professor at Australian universities. His scientific achievements were appreciated by appointing him to honorary positions in many German and European panels and committees, amongst others the expert committees for metal and composite structures at the German Institute for Construction Technology (DIBt) in Berlin, the German Scientific Board for Steel Structures (DASt), and the working group on shell stability of the European Convention for Constructional Steelwork (ECCS) (as their long-time chairman).
Since 2001, Herbert Schmidt is officially retired. After his legal approval as a proof engineer for structural steel design has expired in 2004, he addresses himself more intensively to his role as a scientifically consulting senior partner in the engineering consultants partnership PSP that he founded in 1995 together with Ufuk Kocabiyik and Peter Swadlo. Apart from this, he writes technical papers and books (e.g. the Beuth Commentary „Execution of Steel Structures“ as co-author in charge), gives lectures and is in certain demand as a forensic engineering expert.