일위대가 방식과 작업조 방식의 생산성 분석 및 비교 연구

Abstract

Recently, the non-vibration mass excavation method is used on sewage pipes and road construction sites in Jeju. However, a construction cost estimation based on the unit quantity does not provide a proper unit price that doesn't consider about the size of construction site, regional differences and construction period. In this study, it analyzes the productivity by comparing the standard quantity-per-unit costing method that based on the standard quantity per unit and the work crew combination method which using the data related the amount of labor and works. It is based on the site monitoring of the non-vibration mass excavation method that is used in construction sites near Jeju. For this, data of 35 sites were collected: a regression equation was derived from the 30 data, and verification was carried out through the remaining 5 data. The analysis concluded that a day's workload is 16.43㎥. In addition, a combination of the equipment considering the site conditions and the amount of labor, which varies with the number of work crew was obtained in order to estimate the construction cost of the work crew combination method. The construction cost was calculated based on the one-day workload (16.43㎥) derived from the regression analysis. The cost then was analyzed and compared with the standard quantity-per-unit costing method. The model of Standard Quantity-Per-Unit Costing Method and Work Crew Combination Method from this research will present a new direction for Vibration-free Rock Excavation which had problems and limited options by selecting the standard of each estimation method and determining best combination of the equipment as well as appropriate amount of labor on the following conditions of the construction site. Moreover, it will be used not only as a beneficial basic data for those similar construction methods but also a data in order to analyze the efficient productivity for the Work Crew Combination Method in some civil construction projects.