NEHRP Clearinghouse
- Title
- Use of Thermal Stress for Seismic Damage Repair.
- File
- PB86163672.pdf
- Author(s)
- Roeder, C. W.
- Source
- National Science Foundation, Washington, DC. Directorate for Engineering., October 1985, 159 p.
- Abstract
- Different types of damage are described and potential repair methods are noted. It is suggested that most structural steels can be repaired by heat straightening with no significant change to the material properties if a few simple guidelines are followed. An extensive series of experiments are then performed and evaluated. The experiments show that the plastic deformation achieved by heat straightening is very sensitive to temperature, quenching, heat geometry, applied load and restraint conditions. A mathematical model using a finite difference heat flow model with the non-linear finite element method, was developed.
- Keywords
- ; Steel construction; Maintenance; Damage; Structural steels; Thermal stresses; Plastic deformation; Earthquakes