This research project was undertaken to evaluate, from a structural standpoint, the effects on conventional mobile cranes when they are used for container offloading operations from cargo vessels. A preliminary crane rating procedure, based largely on available static rating and analysis techniques and on existing ship motion data was developed. This procedure was used to obtain preliminary rating curves for a particular crane over a range of position and orientation parameters and for several different rating options and load conditions. A simplified dynamic simulation procedure was developed for a flexible boom and rigging mounted on a moving platform. The analysis includes a representation of load control lines and viscous damping factors for boom flexure and bridle and hoist line stretching. Platform motions are provided from ship motion data. Dynamic responses of the boom tip and suspended load are obtained for a particular crane.

  • Supplemental Notes:
    • Report prepared for Naval Coastal Systems Laboratory, Panama City, Florida, 32401.
  • Corporate Authors:

    Illinois Institute of Technology

    3300 South Federal Street
    Chicago, IL  United States  60616-3793
  • Authors:
    • Vyzral, F J
    • Welch, F E
  • Publication Date: 1977-3

Media Info

  • Pagination: 90 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00173539
  • Record Type: Publication
  • Source Agency: Illinois Institute of Technology
  • Report/Paper Numbers: IITRI Project J6381 Final Rpt.
  • Contract Numbers: N61339-76-C-0072
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM