This was a Joint Industry Project (JIP). This project covered three areas of concern involving damaged structures: the effect of corrosion damage on strength; field assessment of corrosion damaged; and the repair of dented tubular columns.
Completed. Work focused on the effect of multiple corrosion patches and column length on the strength of tubular columns. Finite element (FE) analysis was used to study the interaction between corrosion patches. This work continued the research that considered the effect of a single corrosion patch.
A M.S. Thesis has been completed which covers the major segments of this part of the project. The thesis was entitled Ultimate Strength of Tubular Columns with Multiple Corrosion Patch Damage by Onur Gulec. The following area of work will be added, reworked or expanded on in the final report as compared with that presented in the thesis: (1) A full description of the tests and the actual work performed by others (2) An improvement of the accuracy and a simplification of the strength formulas for tubes with three corrosion patches (3) Completion of the development of strength formulas for tubes with two corrosion patches (4) Extension of the FORTRAN computer program to allow for two and three corrosion patches (5) Additional cases analyzed by FEM to expand the data base needed in the process of formulating approximation formulas for design.