Design for Robustness: Burden or Opportunity?

Author:

Tanner Peter1,Hingorani Ramón2,Bellod Juan Luis3,Sanz David3

Affiliation:

1. Dr, Eduardo Torroja Institute for Construction Science and Cesma Ingenieros, Madrid, Spain

2. Dr, Norwegian University of Science and Technology, Trondheim, Norway

3. Civil Engineer, Cesma Ingenieros, Madrid, Spain

Abstract

<p>Since the successful translation of many constraints into an aesthetically appealing as well as reliable, functional and cost-effective structure is primarily a question of sound conceptual design, the importance of this step in the design process as a whole cannot be overstated. Nonetheless, the growing complexity of analysis and verification methods, materials technology and construction procedures is driving ever greater specialisation against a backdrop of increasingly extensive and opaque standardisation and control systems. Such specialisation comes at the expense of conceptual design training in engineering schools and consequently of structural engineers’ creativity and other skills necessary to create compelling designs for structures. The rules for ensuring robustness reflect the increasing complexity and opacity characterising structural design codes. While the practical importance of designing and building robust structures is universally acknowledged, the codes presently in place are often vague or confusing. Cross-referencing, in turn, may lead to loops around rules that, confounding engineers, are counterproductive. At the same time, however, that lack of clarity may afford opportunities for innovative solutions by building items that ensure robustness into the conceptual design of a structure. This paper proposes an operational design process that deals appropriately with all factors of structural performance, including robustness, without compromising bridge economy or elegance. That process, which combines several robustness strategies, including risk- based considerations, is illustrated with a case study.</p>

Publisher

Asociación Española de Ingeniería Estructural

Reference16 articles.

1. LEONHARDT F., Brücken – Bridges, The Architectural Press Ltd, London, 1982, ISBN 0851397646.

2. Muttoni, Aurelio (2004), "L' art des structures: Une introduction au fonctionnement des structures en architecture", pp. 271

3. prEN 1990:2020, Eurocode – Basis of structural and geotechnical design, Enquiry Draft, European Committee for Standardization, CEN, Brussels, 2020.

4. CEN/TC 250/WG6.T2, Robustness rules in material related Eurocode Parts, Report of Project Team WG6.T2, European Committee for Standardization, CEN, Brussels, 2020.

5. Progressive Collapse of Structures

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