Karafan Journal

Karafan Journal

Optimizing the Life Cycle of Residential Buildings by Combining Hierarchical Analysis and Value Engineering Methods with the Classic and Widely Used AHP Analysis Model

Document Type : Original Article

Authors
Masoud Mahdavi 1
Seyyedreza Hosseini 2
Abbas Babaafjeei 2
Saba Chaghakaboodi 3
Farzaneh Ghasemi 4
1 PhD Student, Department of Structures, Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran.
2 Master's Student, Department of Structures, Faculty of Civil Engineering, Khajeh K. N. Toosi University of Technology, Tehran, Iran.
3 PhD Student, Department of Structures, Faculty of Civil Engineering, University of Tehran, Tehran, Iran.
4 Master's Degree, Department of Aeronautical Structures, Faculty of Aerospace, K. N. Toosi University of Technology, Tehran, Iran.
10.48301/kssa.2024.425145.2766
Abstract
The life cycle of residential buildings means increasing the maximum level of performance and reducing costs. In the current research, the opinions of 35 university professors and doctoral students in the fields of structure and construction management were collected with a researcher-made questionnaire including the objective, 5 criteria and 15 sub-criteria. The questionnaire used pairwise comparisons, the average scores of which were input data to the Expert Choice software and analyzed using the Analytical Hierarchy (AHP) method. The results were redesigned with the method of value engineering, review and indicators, and a proposed algorithm was presented to optimize the life cycle. The results showed that the criteria of "improving seismic performance", "reducing implementation cost", "increasing structural safety", "increasing structure size" and "reducing structure weight" with influence coefficients of 0.486, 0.312 and 0.102, 0.062 and 0.039, ranked 1 to 5 in the order mentioned were the most influential on the optimization process. The sub-criteria of "equipment of the structure to energy consumption systems (earthquake)", "reduction of wages", "use of modern structural systems" and "use of prefabricated technology" with influence coefficients of 0.318, 0.204, 0.127 and 078 0 were the most effective sub-criteria in optimizing the life cycle of residential buildings due to having higher influence coefficients than the numerical average in all sub-criteria (0.067). The criterion of "structure weight reduction" and the sub-criterion of "formation volume reduction" were the least effective parameters on the life cycle of residential buildings with impact coefficients of 0.039 and 0.003, respectively.
Keywords
Optimization
Residential Building Life Cycle
Hierarchical Analysis
Value Engineering
Proposed Algorithm
Subjects
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Karafan Journal
Volume 21, Issue 3
Technical and Engineering
Autumn 2024
Pages 347-366

  • Receive Date 22 November 2023
  • Revise Date 22 July 2024
  • Accept Date 11 September 2024