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http://dx.doi.org/10.12989/eas.2019.17.1.075

Seismic performance of RC frame having low strength concrete: Experimental and numerical studies  

Rizwan, Muhammad (Earthquake Engineering Center, Department of Civil Engineering, UET Peshawar)
Ahmad, Naveed (Earthquake Engineering Center, Department of Civil Engineering, UET Peshawar)
Khan, Akhtar Naeem (Earthquake Engineering Center, Department of Civil Engineering, UET Peshawar)
Publication Information
Earthquakes and Structures / v.17, no.1, 2019 , pp. 75-89 More about this Journal
Abstract
The paper presents experimental and numerical studies carried out on low-rise RC frames, typically found in developing countries. Shake table tests were conducted on 1:3 reduced scaled two-story RC frames that included a code conforming SMRF model and another non-compliant model. The later was similar to the code conforming model, except, it was prepared in concrete having strength 33% lower than the design specified, which is commonly found in the region. The models were tested on shake table, through multiple excitations, using acceleration time history of 1994 Northridge earthquake, which was linearly scaled for multi-levels excitations in order to study the structures' damage mechanism and measure the structural response. A representative numerical model was prepared in finite element based program SeismoStruct, simulating the observed local damage mechanisms (bar-slip and joint shear hinging), for seismic analysis of RC frames having weaker beam-column joints. A suite of spectrum compatible acceleration records was obtained from PEER for incremental dynamic analysis of considered RC frames. The seismic performance of considered RC frames was quantified in terms of seismic response parameters (seismic response modification, overstrength and displacement amplification factors), for critical comparison.
Keywords
SMRF; response modification factor; nonlinear modelling; over strength; displacement amplification factor;
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Times Cited By KSCI : 7  (Citation Analysis)
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