03-10-2014, 09:40 AM
Abstracts: Retrofitting reduces the vulnerability of damage of an existing structure during a future earthquake. It aims to strengthen a structure to satisfy the requirements of the current codes for seismic design. In this respect, seismic retrofit is beyond conventional repair or even rehabilitation. The principles of seismic retrofit refer to the goals, objectives and steps. The steps encompass condition assessment of the structure, evaluation for seismic forces, selection of retrofit strategies and construction. The applications include different types of buildings, industrial structures, bridges, urban transport structures, marine structures and earth retaining structures. The Department of Civil Engineering, Indian Institute of Technology Madras, has developed a Handbook on seismic retrofit of buildings under the sponsorship of the Central Public Works Department and under the aegis of Indian Buildings Congress. The principles of retrofit refer to the goals, objectives and steps.The steps encompass condition assessment of the structure, evaluation for forces, selection of retrofit strategies and construction.The applications include different types of buildings, industrial structures, bridges, urban transport structures, marine structures and earth retaining structures. The objective of this study is to propose an alternative method to control the behaviour of existing structure during the lateral load effects. In all contries old and poor building are more and they required to repair or retrofitting. The benefits of retrofitting include the reduction in the loss of lives and damage of the essential facilities, and functional continuity of the life line structures. For an existing structure of good condition, the cost of retrofitting tends to be smaller than the replacement cost. Thus, the retrofitting of structures is an essential component of long term disaster mitigation.