طراحي مدل انتخاب پيمانكار با استفاده از روش تلفيقي فرايند تحليل شبكه‌يي و روش ابتكاري (مطالعه‌ي موردي: پروژه هاي ساخت)

Contractor selection model using the combination of ANP and a heuristic method (Case Study: manufacturing projects)

در اين مطالعه هدف ارايه‌ي راه‌حلي منطقي و ساده براي فرايند تصميم‌گيري در انتخاب پيمانكار با تلفيقي از رويكردهاي تجربي و نظري است. با استفاده از ادبيات مروري درمورد انتخاب پيمانكار، با توجه به سادگي، دقت، و عموميت و همچنين صرف زمان و نياز به منابع انساني نسبتاً كم‌تر در بين روش‌ها، روش تحليل شبكه انتخاب شد. با توجه به اين نكته كه تعيين قيمت پايه تنها براي ارزيابي هزينه‌ي پروژه نيست، مدل ارايه شده با تحليل اختلاف بين قيمت پايه و قيمت پيشنهادي پيمانكار به سازمان كمك مي‌كند كه تاثير معيار قيمت بر ساير ‌معيارها را در نظر بگيرد. در اين پژوهش با كمك مدل پيشنهادي، امتياز دقيق‌تري براي معيار توانايي انجام كار در نظر گرفته شد. يافته‌ها حاكي از آن است كه تفاوت چشمگيري بين نتايج روش تحليل شبكه با روش تلفيقي، وجود دارد. به‌منظور اعتبارسنجي رويكرد پيشنهادي از اين مدل در مصلاي اصفهان استفاده شد.

The purpose of this study is to provide a reasonable and simple solution for the decision making process of choosing the contractor that will be used with a combination of experimental and theoretical approaches The approach of this study was to review the literature regarding the selection of the contractor. According to the methods and techniques available in the literature, ANP method was chosen. In other words , according to simplicity, comprehensiveness and universality, and also spend less time and human resources in the contractor selection the methods available in the literature contractor selection, Analytic Network Process (ANP) of Multi-Criteria Decision Making (MCDM) method was chosen for use in this study. Given that each method has drawbacks and deficiencies are found, the network analysis method in this case is not an exception. On the other hand, contracting projects, especially in construction projects, due to economic conditions and unstable business environment, especially in Iran, the benchmark price is of particular importance. Due to the significant effects of the standard price in the determination of contractors, observed that the ANP method will not be able to apply all these effects at the result. The traditional method combined with the classical method, but with substantial changes. In fact, these changes are related to the defined bounds for the price and type of project owners to deal with contractors who have been out of bounds, returns. Assuming Minos and plus - Here Minos plus 20% lower and 40% higher than the price at which the item was defined - for these limitations, the solution was extracted from the traditional approach. An interesting result was that there was a significant difference between the results of Analytic Network Process combined with the selected contractor. The advantages of this method over the traditional method, it can be easily understood and the acceptance of it. Limitations of this study include the use of this method in a limited geographical area, as well as certain type of organizations (Isfahan preparedness). Finally, the expression is important in this study to avoid calculation errors and to draw shapes and diagrams, using Excel software and Super Decision software.