Urban Infrastructure Requalification Index: the central viaduct in Brasília

Galimi, Stefano; Buzar, Márcio Augusto Roma; Pantoja, João da Costa

doi:10.1590/2236-9996.2022-5511.e

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Sumário

dossiê: as ambivalências e contradições das redes digitais no social • Cad. Metropole 24 (55) • Sep-Dec 2022 • https://doi.org/10.1590/2236-9996.2022-5511.e copy

Urban Infrastructure Requalification Index: the central viaduct in Brasília

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Memories and pride of the past related to cultural places, often provided by the urban infrastructure itself, are resources for urban development and regional identity, which can be recreated, interpreted and re-functionalized to suit current and future generations. This work uses an urban retrofit intervention model in the central area of Brasília, represented by the Galeria dos Estados viaduct, the capital's main arterial road. The methodology adopted for the classification of urban infrastructure according to the Urban Infrastructure Requalification Index (IRU) considers a multi-criteria model based on three parameters: structural, environmental and spatial. The data point to the feasibility of implementing these parameters in the assessment of existing infrastructure, connectors of contemporary cities.

urban infrastructure requalification index; urban retrofit; road infrastructure; bridges; conservation of modern heritage

Structural – Special Work of Art
1 – Fundation blocks Structural foundation elements in reinforced concrete, which transfer the heavy load from the superstructures to the soil.
2 – Retaining walls Structural elements of soil containment (in reinforced concrete).
3 – Deck slabs Flat elements to support road traffic, supported by horizontal beam elements, such as longerons, stringers and transversines.
4 – Pillars Vertical structural element, whose function consists of absorbing the stresses originating from the superstructure and consequently unloading them to the soil+foundations infrastructure .
5 – Support system Connection and static linkage between the deck system and the vertical support system (pillar).
6 – Main girder Main horizontal elements represented by longeron stringer beams (larger span).
7 – Secondary girders Secondary horizontal elements represented by transversines (smaller span).

Installations – Special Work of Art (SWA)
8 – Internal HVAC system The purpose of the heating, ventilation and air conditioning system is to control the temperature, humidity, movement, renewal, and air quality of a given environment .
9 – Drainage system A set of structures that are installed in a given location with the purpose of retaining and transposing rainwater.
10 – Lighting system The lighting system has its projects and material specifications aimed at energy efficiency, cost reduction and compliance with the minimum photometric requirements stipulated in standards (NBR 5101:1992).
11 – Sustainable energy generation system The photovoltaic solar energy system that captures light and generates direct current (DC) as a result of photovoltaic effect, which is in turn converted to alternating current (AC). Thereby, electricity is distributed or stored on-site.
12 – Structural monitoring system Early warning system for the detection of damage to the structure, predicting critical situations and structural failures, reducing intervention times and repair costs.

Implementation - Special Work of Art (SWA)
13 – Acessibility Possibility to access a place, service, product or information in a safe and autonomous way, without any kind of architectural barrier, benefiting all people, with or without disabilities and in all stages of life.
14 – Sidewalks The sidewalk is the public space reserved for pedestrians’ daily commuting in the city.
15 – Bikeway A lane intended exclusively for bicycle circulation.
16 – Landscaping Technique for designing, planning and preserving urban spaces, in order to create micro landscapes, according to aesthetic and sustainable criteria of each place.
17 – Vegetation Urban greening, characterized by the vegetation that composes the scenery or landscape of cities, has a fundamental role in improving the quality of life of the population, providing municipalities with ecological, aesthetic, economic and social benefits.
18 – Street furniture Collective term for urban objects and equipment installed on streets and roads for various purposes.

IRU	Classification	Conditions
0,9 – 1	Maximum degree Global requalification status	All parameters of the proposed indicators totally achieved
0,7 – 0,8	Medium/maximum degree Parcial requalification status	All parameters of the proposed indicators partially achieved
0,5 – 0,6	Medium degree Structural integrity and implementation status	All structural and implementation parameters of the proposed indicators totally achieved
0,3 – 0,4	Medium degree Structural integrity status	All structural parameters of the proposed indicators totally achieved
0,1 – 0,2	Minimum/medium degree Structural criticality status	All structural parameters of the proposed indicators partially achieved
0	Minimum degree Obsolescence status	None

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