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Spring and Summer 2010, Vol. 12, No. 1 & 2 - Experimental Investigation of the Effect of Transverse Beams on the In-plane Behavior of Brick-Flat-Arch Roofs
Monday, 28 February 2011 12:08
Article Index
Spring and Summer 2010, Vol. 12, No. 1 & 2
Seismic Situation's Probability Prediction in Greater Caucasus During the Period 2005-2025
Effects of Non-Plastic Fines Content on Cyclic Resistance and Post Liquefaction of Sand-Silt Mixtures Based on Shear Wave Velocity
3D Topography Effects on Amplification of Plane Harmonic Body and Surface Waves
Experimental Study on Flexural Strengthening of RC Columns with Near Surface Mounted FRP Bars
Experimental Investigation of the Effect of Transverse Beams on the In-plane Behavior of Brick-Flat-Arch Roofs
An Evaluation of Disaster Preparedness in Four Major Earthquakes in Iran
Stability of Plate Girders in RBS Connections: A Numerical Approach
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Experimental Investigation of the Effect of Transverse Beams on the In-plane Behavior of Brick-Flat-Arch Roofs

H. Shakib and A.R. Mirjalili

 

A number of historical and residential buildings were constructed with traditional brick-flat-arch roofs. The seismic behavior of this type of diaphragms has shown that they have a poor seismic performance. Several methods were suggested to retrofit this type of diaphragms. In this research, the in-plane seismic behavior of retrofitted brick flat arch diaphragms using transverse beams is investigated with experimental models. For this purpose, four full-scale experiments of roof diaphragm were conducted under cyclic loading. The results of the two first experiments showed that non-retrofitted traditional flat arch roofs have insufficient stiffness, shear capacity and integrity. In the retrofitted models however, the transverse beams within all the spans of roof can improve the in-plane behavior of this type of diaphragm to the extent that acceptable improvement in integrity and ductility of the diaphragm was observed in retrofitted roof, but the transverse beams could not properly improve the other seismic parameters of the diaphragm such as its shear capacity and stiffness. Therefore, this retrofitting method might not be an adequate method to secure the appropriate in-plane behavior of flat-arch roofs.

 

 

 



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