PROCESS OF REPAIRING/RETROFITING OF REINFORCED CONCRETE BUILDINGS DAMAGED DURING EARTHQUAKE AND APPLICATION EXAMPLES

It is clear that repairing and strengthening is significant especially for countries in active earthquake zones. In this study the issue will be covered under topics.Design principles of structures with adequate safety (providing of stability, providing of resistance, providing of durability, providing of ductility, providing of Stiffness) Damage reasons of structures, uncertainty and defects (damage factors, uncertainty and defects causing damage and collapse, uncertainty and defects in design) Crack mechanism in reinforced concrete, crack types, repair and strengthening (crack echanism and types, repair and strengthening, some related definitions and notations, repair and strengthening type, repair and strengthening process, materials used for repair and strengthening, repair and strengthening methods, repair and strengthening techniques and details)Examples: infill walls, column sheathing (reinforced concrete/steel), beam repairing and strengthening (bending/shear), beam repairing and strengthening (bending/shear), slab repairing and strengthening (bottom/top), repairing and strengthening of column-beam and their connections, repairing and strengthening of reinforced concrete shear walls, repairing and strengthening of infill walls, repairing and strengthening of stairs and foundations.Some conclusions and recommendations.

کلیدواژه ها:

repairing and strengthening ، Damage reasons ، Crack mechanism ، Examples