Rehabilitation of existing structures in seismic zones

✍ Scribed by Corneliu Bob

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 154 KB
• Volume: 3
• Category: Article
• ISSN: 1365-0556
• DOI: 10.1002/pse.101

✦ Synopsis

Abstract

Existing structures built before the 1970s are gravity load designed with inadequate lateral load resistance because earlier codes specified lower levels of seismic loads and many of these structures are still in service beyond their design life. On the other hand, some deterioration of component parts of buildings are encountered in old structures due to the actions of different hazard factors. This paper discusses the characteristics of existing structures under seismic motions, general and specific solutions for rehabilitation with three examples.

Characteristics of existing structures and specific solutions for rehabilitation are detailed for reinforced concrete, steel and masonry structures. Rehabilitation of three different types of existing structures are described: a reinforced concrete framed structure with local damage caused by the action of chloride ions and reinforcement weakness; an old masonry structure which is at risk in the event of a future earthquake; a huge building at significant seismic risk, but without dangerous situation of structure elements.