THREE-DIMENSIONAL STOCHASTIC RESPONSE OF OFFSHORE TOWERS TO WAVE FORCES

A theory has been developed to calculate the dynamic response of offshore towers to random wave forces. Vibrations are considered simultaneoulsy in the orthogonal horizontal directions and for rotations about a vertical axis. A lumped mass model of the structure is used in the dynamic analysis. Numerical results for seven deep water towers having heights of 475, 675, 875, and 1,075 feet, are presented. These results include standard deviations and mean peak values for displacements, rotations, shear forces and twisting and bending moments. They show that the directional spread of the waves normally has little effect on the rotational response, and that the effect of the rotational response on the overall structural response is small.

• Supplemental Notes:
  • Presented at the 6th Annual Offshore Technology Conference, Houston, Texas, May 6-8, 1974. Requests for this paper should be directed to David L. Riley, Offshore Technology Conference.
• Corporate Authors:

  Offshore Technology Conference

  6200 North Central Expressway
  Dallas, TX  United States  45206
• Authors:
  • Berge, B
  • Penzien, J
• Conference:
  • Presented at the 6th Offshore Technology Conference
  • Location: Houston Texas
  • Date: 1974-5-6 to 1974-5-8
• Publication Date: 1974-5

Media Info

• Features: References;
• Pagination: p. 173-190
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Dynamic loads; Force; Offshore structures; Vibration; Waves
• Old TRIS Terms: Wave excited vibration; Wave forces on structures
• Subject Areas: Bridges and other structures; Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00072914
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: OTC #2050 Paper
• Files: TRIS
• Created Date: Jan 16 1975 12:00AM