Estudo comparativo de uma ponte de embarque utilizando sistemas estruturais em concreto armado e estrutura metálica: estudo de caso

Abstract

In order to compare two or more structural systems, we must approach the study in the most comprehensive way possible, considering essential elements such as dimensions, demands, financial viability, logistics, completion time and all other related factors. This requires a broad perspective and systemic and impersonal thinking as a decision support tool. The study carried out, of comparative merit, must be duly grounded in current standards, in national and international certification bodies, as well as in theoretical and practical knowledge acquired in the field of civil construction. The case study carried out on a boarding bridge executed at the President Castro Pinto International Airport, initially designed in a metallic structure and later in reinforced concrete for comparative purposes, with the objective of supporting the choice of construction method, always aiming at lower costs and deadlines with in view of the best performance. For the case study, despite the disadvantages related to specialized labor and high costs of direct expenses resulting in a 40% more expensive budget, this metallic structure still proved to be more advantageous due to its short execution time. The execution time of the metallic structure represented 1/3 of the execution time of the same reinforced concrete structure. This option has become more advantageous because of its logistics that reduces waste, overcomes larger spans, is lighter and consequently more economical in the foundation.