Multicriteria optimizing of construction equipment selection by AHP method
Apstrakt
Construction equipment is a key resource in the realization of construction projects.
Correct and careful planning in the usage of construction equipment plays a vital role in the
economic success of every construction project and has a key impact on the profitability of
construction companies. Due to the lack of scientificaly based approach and undeveloped
practical methods for construction equipment selection and optimization, the choice of
equipment is mainly based on the manufacturer’s recommendations and the contractor’s
intuition in selecting the type, brand and model of equipment.
This paper discusses a model for selection of an optimal set of construction machines. The
optimization is based on a multi criterion method – the Analytical Hierarchy Process or AHP.
The selection of the optimal combination starts by forming a set of all the technologically
possible combinations, generated by CESAD software. Thereby forming a method for
selection of the optimal combination ...of equipment. The method is based on the mutual
comparison of alternatives by using the selected criteria functions which are defined by the
user at the start of each optimization.
The proposed method has been tested on a real case – earthworks for construction of
embankment on a highway section on Corridor X in Serbia between Nis and Dimitrovgrad.
Possible combinations were generated by CESAD software. The criteria functions in this case
were based on output, unit price and profit per unit of embankment. A sensitivity analysis was
performed to check the sensitivity of the final decision subject to minor changes in the criteria
functions.
Ključne reči:
construction equipment / Optimization / AHP method / CESADIzvor:
Organization, Technology and Management in Construction - OTMC, 10th International Conference, Šibenik, Croatia, 2011, 611-Izdavač:
- Hrvatska udruga za organizaciju građenja