Abstract

Abstract A major part of this issue deals with topics that have recently attracted the attention of CIB working group W23, which is concerned with loadbearing walls. Beginning this section, the following paper presents an analysis of the problem of instability in large structures and develops some critical general propositions related to the phenomenon of instability. A set of four principal strategies for an engineering design philosophy are then proposed. It is suggested that any method of stability control in structural systems must incorporate one or more of these strategies. The author works at the Scottish Laboratory of the UK Building Research Establishment. Une grande part de ce numéro est consacrée à des sujets qui ont récemment retenu l'attention de la commission de travail CIB W23 qui s'occupe des murs porteurs. Vous trouverez tout d'abord l'article de M. Armer qui travaille au Scottish Laboratory du BRE (RU). Il analyse le problème de l'instabilité des grandes structures et développe certaines propositions générales et fondamentales relatives à ce phénomène, puis expose un ensemble de quatre stratégies essentielles pour une philosophie des projets de génie civil. Selon l'auteur, toute méthode de contrôle de la stabilité des systèmes de construction doit intégrer une ou plusieurs de ces stratégies.

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