تحلیل روش های ارزیابی عامل کیفیت در بهینه سازی مسئله موازنه زمان-هزینه در صنعت ساخت وساز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی صنایع دانشگاه پیام نور

2 دانشیار گروه مهندسی صنایع، دانشگاه سیستان و بلوچستان

10.22091/cer.2021.6061.1215

چکیده

مسائل موازنه زمان و هزینه توجه ویژه‌ای را در ادبیات مسائل زمان‌بندی به خود اختصاص داده است. هدف از مسئله بهینه‌سازی موازنه زمان- هزینه، تجزیه‌وتحلیل کاهش زمان اصلی پروژه با کمترین هزینه است. در این مسائل، تأثیر کیفیت اجرای پروژه برای فعالیت‌های مختلف لحاظ نشده است. توجه به عامل کیفیت در این بین به اواسط دهه 90 میلادی باز می‌گردد. از آن زمان تاکنون مقالات بسیاری در این زمینه منتشر گردیده است. در بحث تعادل و موازنه، بین سه تابع هدف زمان، هزینه و کیفیت پروژه نسبت به انجام تحلیل حساسیت هزینه نسبت به تغییرات مدت زمان انجام فعالیت‌ها اقدام می‌شود که هدف آن به‌دست آوردن بهترین ترکیب کاهش زمانی فعالیت‌ها است، به‌گونه‌ای که مجموع هزینه‌های پروژه، کمینه و کیفیت کل پروژه، بیشینه شود. مقاله حاضر، به طبقه‌بندی مسائل موازنه زمان، هزینه و کیفیت و بررسی نحوه محاسبه عامل کیفیت در پژوهش‌ها و همچنین رابطه بین سه هدف زمان، هزینه و کیفیت در پروژه‌ها و فعالیت‌های پروژه می‌پردازد. نتایج تحلیل مقالات نشان می‌دهد که ارزیابی عامل کیفیت در مسائل موازنه را می‌توان به چهار دسته تقسیم‌بندی نمود. در مورد اول، کیفیت از طریق کارهایی که برای اصلاح فعالیت‌های غیرهماهنگ موردنیاز است به‌طور ضمنی ارزیابی می‌شود. در مورد دوم، کیفیت هر فعالیت به‌عنوان تابعی از مدت زمان و هزینه آن بیان شده است. در مورد سوم، کیفیت یک فعالیت در هریک از حالت‌های اجرایی احتمالی آن، به‌صورت تخمینی براساس نظر خبرگان برآورد می‌گردد و در آخرین مورد نیز کیفیت یک فعالیت توسط شاخص‌های تعیین شده مورد ارزیابی قرار می‌گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Analysis of Quality Factor Evaluation Methods in Optimization Time-Cost Trade-off Problem in Construction Projects

نویسندگان [English]

  • Sayyid Ali Banihashemi 1
  • Alireza Shahraki 2
1 Department of Industrial Engineering, Payame Noor University, Iran
2 Department of Industrial Engineering, Sistan & University of Sistan and Baluchestan, Zahedan, Iran
چکیده [English]

The purpose of optimizing the time-cost trade-off problem is to analyze the reduction of the original project time with the lowest cost. In these issues, the impact of project implementation quality on various activities has not been taken into account. Attention to the quality factor goes back to the midnineties. Many articles have been published since then. In the equilibrium discussion, the three objectives of time, cost and quality of the project are to perform a cost-sensitivity analysis of the variations in the duration of activities to obtain the best combination of reduction in activities. This is to minimize total project costs and maximize overall project quality. This paper classifies the issues of time, cost and quality trade-off and examines how to calculate the quality factor in research as well as the relationship between the three objectives of time, cost and quality in projects and project activities. The results of the analysis of the articles show that the evaluation of the quality factor in equilibrium problems can be divided into four categories. In the first case, quality is implicitly assessed through the tasks needed to modify the non-coordinated activities. In the latter case, the quality of each activity is expressed as a function of its duration and cost. In the third case, the quality of an activity in each of its possible execution modes is estimated by experts, and in the latter case, the quality of an activity is assessed by the set of indicators.

کلیدواژه‌ها [English]

  • Optimization
  • Time-cost-quality trade-off problem
  • Project Scheduling
  • Project Quality
  • Activity Quality

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