Evaluation of shear wall indexes for RC buildings

Date

2010-12-01

Author

Yakut, Ahmet
Soydas, O.

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Observations made after devastating earthquakes revealed that presence of shear walls improves seismic performance of reinforced concrete buildings. However, the correlation between seismic performance and shear wall area in RC buildings has not been studied in detail. For this reason, an analytical study was carried out to evaluate shear wall indexes for low to mid-rise reinforced concrete buildings. Forty five 3D building models with two, five and eight storeys having different wall ratios were generated. These building models had the same floor plan with different orientation and area of shear walls. The ratio of shear wall area to the floor area varied between 0.53 to 3.60 percent. Linearly elastic and nonlinear static pushover analyses of the models were performed by SAP2000. The response of buildings was investigated under the response spectrum given in the Turkish seismic code considering that all buildings were located in the highest seismic zone. The variation of roof drift with shear wall ratio was obtained and the results were compared with the results of approximate procedures given in the literature. The results indicated that despite a strong trend between the wall ratio and the drift up to a wall ratio of 2 percent, the increase in the shear wall ratio does not result in a significant change beyond the shear wall ratio of 2.5 percent. This implies that an increase in the wall ratio beyond 2 to 2.5 percent does not lead to significant improvement in the response.

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84867168494&origin=inward
https://hdl.handle.net/11511/106575

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Department of Civil Engineering, Conference / Seminar