Proper planning for marine construction projects that involve new concepts is necessary for efficiency and economy. However, planning is difficult because there are no previous experiences to draw from. In such situations, simulation programs are an effective aid. Plans may be improved by iteratively simulating various construction sequences and resource allocations. Resources can include cranes, barges, and temporary structures. Simulation models assign probabilistic durations to work tasks, allowing more realistic analysis. After each simulation, results may be reviewed and improvements may be made. In this paper, simulation modeling is used to improve the resource allocation and construction schedule for a guide wall using a mobile cofferdam. A guide wall assists vessels as they enter and exit locks, and a mobile cofferdam provides a dewatered area for constructing a segment of the structure. The first model served as a point of comparison for modified versions. Modifications were made to the number of cranes, their work assignments, and the number of mobile cofferdams. The model logic was improved to enhance work flow. In all, six versions of the model were developed. The final version required 47% less time than the first version to complete 40 guide wall segments.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1-9
  • Monograph Title: Issues in marine, intermodal, and motor carrier transportation
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00715628
  • Record Type: Publication
  • ISBN: 0309062047
  • Report/Paper Numbers: HS-042 023
  • Files: TRIS, TRB
  • Created Date: Jan 23 1996 12:00AM