dc.description.abstract | In this work, we investigate and study the framework for lifts in low and middle rise steel-structure buildings. Due to strong competition, the control of cost, the planning of construction and the preparation of safety have gained more attention and also played a more important role than the past. However, the framework for lifts is still a subject needed to be considered. Traditionally, among construction companies in Taiwan, tower crane, mobile crane, a combination of tower and mobile cranes or a combination of two mobile cranes are the four typical frameworks for lifts whereas constructing low and middle rise steel-structure buildings. For high rise steel- structure buildings, due to the constrain of its height, tower crane lifting is the only option. The decision of selecting a framework for lifts has been mostly based on rough estimation of the maximum weight on a single unit item and the construction radius. This kind of experience-based decision lacks not only scientific support, but also the objective view of construction planning, cost control and safety preparation.
Optimization analysis has been commonly practiced in business and industry management. It provides effective and satisfying solutions to complex problems. In this study, our goal is to minimize the cost of framework for lifts, including the number and the type of lifts selected, We use a mathematics software tool “LINGO” to analyze then optimize the solution. In our study, we compare the four traditional frameworks mentioned previously then optimize them with the number of lifts. The purpose is to avoid improper selection of lifts which may easily increase the overall costs. In the end, we use gymnastics dome in San-Chun, as an example, to demonstrate our analysis. It is proven to provide excellent results. | en_US |