Typology Selection of Retaining Walls Based on Multicriteria Decision-Making Methods

Abstract

In civil engineering and construction, in the selection of the most adequate and sustainable alternative, all of the alternatives and selection criteria, such as the requirements of the construction process (which are often overlooked) and the preferences of designers, clients, or contractors, are not always taken into account. The purpose of this article is to suggest a methodology that may allow studying all of the possible alternatives to find the most ideal solution among all of the existing possibilities for the selection of retaining walls to be built in infrastructures in different environments. For this purpose, all typologies of retaining walls and selection criteria (external requirements, construction requirements, characteristics of the natural land and economic criteria) are first identified. Subsequently, a simple methodological method is proposed, allowing the relative importance of each criterion to be established and allowing us to select the most suitable solution for each situation by successively applying different multicriteria decision-making methods. Finally, the methodology developed is applied to two projects in different locations with different constraints. The results obtained provide a set of compromise solutions that remain as best-rank alternatives when the weights of the criteria change. Therefore, the methodology developed can be applied to the selection of typologies of other structures in future projects.

General deformation behavior of deep excavation support systems: A review

“…Retaining systems can be classified according to several different criteria: construction method (fill or cut systems), load support mechanism (externally or internally stabilized systems), system stiffness (rigid or flexible systems), stability mechanism, applications, and lifespan (permanent or temporary systems) [1]. Based on load support mechanism, O' Rourke and Jones classified the retaining systems into three main categories: Internally Stabilized Systems (ISS), Externally Stabilized Systems (ESS), and Hybrid Systems (HS) [2].…”

“…Clough and O'Rourke [21] suggested profiles of lateral wall deformation and the ground surface movement behind it due to excavation activities, as illustrated in Fig. (1). During the initial stages of excavation and before installing the lateral supports, the wall will be deformed as a cantilever, as shown in Fig.…”

Robust Analysis and Design of Bored Pile Considering Uncertain Parameters

“…They concluded that the use of computational methods minimizes uncertainties arising from limited number of soil properties. Muñoz-Medina et al [28] searched for a suitable methodology for the selection of retaining walls for different infrastructures and environments.…”

Proposta de diretrizes para escolha de contenções de solo

“…Mesmo que exista uma investigação geotécnica subsequente ao início das concepções de projeto, a incerteza é algo inevitável em projetos com solos e rochas, fazendo com que o profissional defina algumas características pré-projeto que raramente condizem com as condições atuais do terreno [9]. No que tange à escolha de contenções existem alguns métodos e critérios já avaliados na literatura científica em diversos países como Espanha [10], Reino Unido [11] e Malásia [12]. Os métodos avaliam indicadores de impacto ambiental, ciclo de custos, impacto social e populacional que, por vezes, são medidas pertinentes apenas ao próprio contexto da pesquisa em que são aplicados e avaliados somente após o término da obra, não avaliando fatores incluídos em premissas adotadas na fase de concepção do projeto geotécnico.…”