Seismic Evaluation and Retrofit of a RC frame structure

Priyaranjanl, Praval (2012) Seismic Evaluation and Retrofit of a RC frame structure. BTech thesis.

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Recent earthquakes in India show that not only non-engineered but also engineered buildings in our country are susceptible even to moderate earthquakes. Indian Standard IS 1893 is revised in 2002. A number of buildings those were designed as per the previous code may not comply with the present code. Therefore evaluating seismic performance of a building and proposing suitable retrofit measure is an important area of study in this context. In the present study an attempt has been made to evaluate an existing building located in Guwahati (seismic zone V) using equivalent static analysis. Indian Standard IS-1893:2002 (Part-1) is followed for the equivalent static analysis procedure. Building is modeled in commercial software STAAD Pro. Seismic force demand for each individual member is calculated for the design base shear as required by IS-1893:2002. Corresponding member capacity is calculated as per Indian Standard IS456:2000. Deficient members are identified through demand-to-capacity ratio. A number of beams and column elements in the first floor of the present building are found to be deficient that needs retrofitting. A local retrofitting strategy is adopted to upgrade the capacity of the deficient members. This study shows that steel jacketing is an efficient way to retrofit RC members to improve flexure as well as shear capacity.

Item Type:Thesis (BTech)
Uncontrolled Keywords:seismic evaluation, equivalent static procedure
Subjects:Engineering and Technology > Civil Engineering > Earthquake Engineering
Engineering and Technology > Civil Engineering > Structural Engineering
Divisions: Engineering and Technology > Department of Civil Engineering
ID Code:3423
Deposited By:Mr. Praval Priyaranjan
Deposited On:22 May 2012 15:12
Last Modified:22 May 2012 15:12
Supervisor(s):Sarkar, P

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