Risk Response Analysis Model for Construction Method Using the Forced-Decision Method and Binary Weighting Analysis

Abstract

Although the selection of a construction method for each type of work is an important factor in determining the quality of a building, the construction duration, costs, and methods are currently being selected according to the subjective judgment of the person in charge, without sufficient consideration of the characteristics of the work type. As a response to this issue, this study proposes a process model to support decision making when selecting the most suitable construction method for major types of construction work. The study used the risk response level model, which connects the conditions of the order and the site, the constructability of the type of work within the site, a review of the economic efficiency of the work site, the forced-decision method, and binary weighting analysis in the construction planning phase. As a result of the application of this model to the construction method selection process for the construction of soil-retaining walls, the factors to be preferably considered in the field cases were analyzed in the order of the environmental, ground, design, construction, structural, and site conditions. Further, the risk response level of each construction method was calculated via risk response level analysis, subject to four applicable construction methods.