A multi-objective decision making model based on TLBO for the time - cost trade-off problems


EIRGASH M. A. , TOĞAN V. , DEDE T.

STRUCTURAL ENGINEERING AND MECHANICS, cilt.71, sa.2, ss.139-151, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 71 Konu: 2
  • Basım Tarihi: 2019
  • Doi Numarası: 10.12989/sem.2019.71.2.139
  • Dergi Adı: STRUCTURAL ENGINEERING AND MECHANICS
  • Sayfa Sayıları: ss.139-151

Özet

In a project schedule, it is possible to reduce the time required to complete a project by allocating extra resources for critical activities. However, accelerating a project causes additional expense. This issue is addressed by finding optimal set of time-cost alternatives and is known as the time-cost trade-off problem in the literature. The aim of this study is to identify the optimal set of time-cost alternatives using a multiobjective teaching-learning-based optimization (TLBO) algorithm integrated with the non-dominated sorting concept and is applied to successfully optimize the projects ranging from a small to medium large projects. Numerical simulations indicate that the utilized model searches and identifies optimal/near optimal trade-offs between project time and cost in construction engineering and management. Therefore, it is concluded that the developed TLBO-based multiobjective approach offers satisfactorily solutions for time-cost trade-off optimization problems.