Method to evaluate the consequences of member failure in jacket-type offshore platform structures
A method to determine the consequences of member failure in offshore jacket-type platform structures is presented. The method utilizes the same computer model of the structure that is used for the initial analysis of the structure. Failure is defined as the complete loss of a member's resistance to load. Such failures can occur as the result of fatigue, poor construction, excessive load, or mechanical damage caused by dropping heavy equipment or ship collisions. To evaluate the consequences of a member failing, the behavior of the remaining members in the structure was determined. This was accomplished by mathematically removing a single member from the structure and computing the change in the behavior, i.e., the change in stresses, of the other members. This member then was replaced and another member was removed; the process was repeated for all members in the jacket structure. Each member can be classified quantitatively according to the change in the stresses in the other members in the platform and also the serviceability of the platform.
- OSTI ID:
- 6072653
- Country of Publication:
- United States
- Language:
- English
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