Wu, K and García De Soto, B (2021) Lifting sequence optimization of luffing tower cranes considering motion paths with dynamic programming. Journal of Construction Engineering and Management, 147(10): 04021126, ISSN 0733-9364
Abstract
The lifting sequence of luffing tower cranes is a key factor in the normal operation of construction projects. Accurate estimation of total lifting time is necessary for lifting sequence optimization. Existing formulations for lifting time estimation have two main deficiencies. One is that the relationship between the hoist motion path of the hook and the luffing motion path of the boom is often neglected. The other is that lifting delays resulting from the horizontal motion path of the boom caused by the relative locations of the crane and the lifting start and end points are rarely taken into account. To address those limitations, this paper proposes a lifting sequence optimization model (LSOM) considering motion paths with dynamic programming. The effectiveness of the proposed model is evaluated by comparing it with three conventional lifting strategies [first in-first serve (FIFS), shortest job first (SJF), and nearest neighbor first (NNF)]. The results show that LSOM achieves a shorter total lifting time and higher crane utilization when compared with FIFS, SJF, and NNF.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | dynamic programming; lifting sequence optimization; lifting time estimation; luffing tower crane; motion path |
| Index terms: | effectiveness, dynamic programming, estimation, hoist, tower crane, time estimation, lifting, construction project, strategy |
| Subjects: | financial and cost management, operations research, occupational health and safety management, construction equipment, production management, maintenance engineering, algorithms, performance management, management |
| Topics: | Project Management, Cost Management, Business Strategy, Health and Safety, Plant and Equipment, Quality Management, Digital Applications, Time Control |
| Descriptive scope: | 2 PC |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here