To compute or not to compute?
In a previous paper “to retrofit or not to retrofit?” (Nuti and Vanzi, 2003) a straightforward procedure able to forecast the economic return of seismic structural upgrading was presented. More recently, the authors realized that the final mathematical results can be much simplified so as to allow b...
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Series: | Journal of Traffic and Transportation Engineering (English ed. Online) |
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doaj-0527175de46e48ed9a5a897662a8982b2021-02-02T07:41:22ZengKeAi Communications Co., Ltd.Journal of Traffic and Transportation Engineering (English ed. Online)2095-75642019-02-01618593To compute or not to compute?Alessandra Fiore0Ivo Vanzi1Camillo Nuti2Cristoforo Demartino3Rita Greco4Bruno Briseghella5Department of Engineering and Geology, University of Chieti-Pescara “G. d'Annunzio”, Pescara 65127, Italy; DICAR, Department of Civil Engineering and Architecture, Polytechnic University of Bari, Bari 70125, Italy; Corresponding author. DICAR, Department of Civil Engineering and Architecture, Polytechnic University of Bari, Bari 70125, Italy. Tel.: +39 08 0596 3875.Department of Engineering and Geology, University of Chieti-Pescara “G. d'Annunzio”, Pescara 65127, Italy; College of Civil Engineering, Fuzhou University, Fuzhou 350116, ChinaDepartment of Architecture, Roma Tre University, Roma 00153, ItalyCollege of Civil Engineering, Nanjing Tech University, Nanjing 210800, ChinaDICATECH, Department of Civil Engineering, Environment, Territory, Building and Chemical, Polytechnic University of Bari, Bari 70125, ItalyCollege of Civil Engineering, Fuzhou University, Fuzhou 350116, ChinaIn a previous paper “to retrofit or not to retrofit?” (Nuti and Vanzi, 2003) a straightforward procedure able to forecast the economic return of seismic structural upgrading was presented. More recently, the authors realized that the final mathematical results can be much simplified so as to allow back-of-an-envelope computation. The title of this paper tries to highlight precisely this aspect, namely that for many a regular seismic structural upgrading cases, nearly no computation is needed (apart from one subtraction and one multiplication) to assess their economic convenience. These findings are presented and discussed in this paper, together with a state of the art on the cost-studies available in literature and technical codes. The mathematical formulation leading to the proposed approximation is suitably explained, underlining its applicability field and comparing it with the rigorous solution. Also a table and a formula are furnished that alternatively allows to calculate the maximum estimation errors, in order to obtain an upper and lower bound for the maximum amount of money which should be allocated for seismic structural upgrading.Finally an application example is described, dealing with retrofitting of reinforced concrete viaducts, a widespread bridge typology in Italy. The adopted upgrading solution consists of a concrete jacket at the base of some piers, particularly suitable in order to increase their ductility. Keywords: Seismic retrofitting, Structural reliability, Safety, Optimization, Cost minimizationhttp://www.sciencedirect.com/science/article/pii/S2095756418305312 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alessandra Fiore Ivo Vanzi Camillo Nuti Cristoforo Demartino Rita Greco Bruno Briseghella |
spellingShingle |
Alessandra Fiore Ivo Vanzi Camillo Nuti Cristoforo Demartino Rita Greco Bruno Briseghella To compute or not to compute? Journal of Traffic and Transportation Engineering (English ed. Online) |
author_facet |
Alessandra Fiore Ivo Vanzi Camillo Nuti Cristoforo Demartino Rita Greco Bruno Briseghella |
author_sort |
Alessandra Fiore |
title |
To compute or not to compute? |
title_short |
To compute or not to compute? |
title_full |
To compute or not to compute? |
title_fullStr |
To compute or not to compute? |
title_full_unstemmed |
To compute or not to compute? |
title_sort |
to compute or not to compute? |
publisher |
KeAi Communications Co., Ltd. |
series |
Journal of Traffic and Transportation Engineering (English ed. Online) |
issn |
2095-7564 |
publishDate |
2019-02-01 |
description |
In a previous paper “to retrofit or not to retrofit?” (Nuti and Vanzi, 2003) a straightforward procedure able to forecast the economic return of seismic structural upgrading was presented. More recently, the authors realized that the final mathematical results can be much simplified so as to allow back-of-an-envelope computation. The title of this paper tries to highlight precisely this aspect, namely that for many a regular seismic structural upgrading cases, nearly no computation is needed (apart from one subtraction and one multiplication) to assess their economic convenience. These findings are presented and discussed in this paper, together with a state of the art on the cost-studies available in literature and technical codes. The mathematical formulation leading to the proposed approximation is suitably explained, underlining its applicability field and comparing it with the rigorous solution. Also a table and a formula are furnished that alternatively allows to calculate the maximum estimation errors, in order to obtain an upper and lower bound for the maximum amount of money which should be allocated for seismic structural upgrading.Finally an application example is described, dealing with retrofitting of reinforced concrete viaducts, a widespread bridge typology in Italy. The adopted upgrading solution consists of a concrete jacket at the base of some piers, particularly suitable in order to increase their ductility. Keywords: Seismic retrofitting, Structural reliability, Safety, Optimization, Cost minimization |
url |
http://www.sciencedirect.com/science/article/pii/S2095756418305312 |
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AT alessandrafiore tocomputeornottocompute AT ivovanzi tocomputeornottocompute AT camillonuti tocomputeornottocompute AT cristoforodemartino tocomputeornottocompute AT ritagreco tocomputeornottocompute AT brunobriseghella tocomputeornottocompute |
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