An Optimatl Algorithm of The Multi-Lifting Operation for Super-Tall Building

The operation and management plan for a lift, an important factor determining work productivity on a high- rise building construction site, has long been considered to be less significant than those for a tower crane, which has resulted in a lack of studies of systematic operation planning for lift. Due to various restrictions on high-rise construction sites, only a small number of lifts can be installed. The restrictions on the installation of lifts have a great influence on labor productivity by floor, which can be changed by the management of the vertical movement of the lifts. Improving the work efficiency of lifts at a construction site is evaluated as an essential management factor to improve labor efficiency on each floor; on the other hand, the efficient management of such lifts is dependent on experienced workers. Considering this, as part of a simulation development for the work efficiency of lifts, one of the major factors in a high-rise building construction, this research aims to develop an algorithm to predict and operate the optimal lift operation time, when two or more lifts are simultaneously operated, based on the work efficiency time calculation algorithm, and to present the optimal operation expectation of the lift in a quantitative way. In the future, the algorithm developed in this research will be equipped in a module to predict and evaluate the work efficiency of a lift in an intelligent work efficiency management system.