Seismic Assessment and Rehabilitation of a Historical Unreinforced Masonry (URM) Building in Istanbul

Abstract eng:
The earthquake vulnerability of a historical building in Istanbul, which is a four-storey unreinforced clay brick masonry (URM) structure built in 1869, is evaluated and a conceptual design solution for seismic rehabilitation/strengthening of the building is proposed. The local strength characteristics of the brick walls are assessed based on the Schmidt hammer testing. Dynamic properties of the building (fundamental vibration periods) are checked with ambient vibration tests. The building is modeled and analyzed as a three-dimensional assembly of finite elements using SAP2000 v11 (Static and Dynamic Finite Element Analysis of Structures) software package. The dynamic analysis procedure of FEMA-356 (Pre-standard and Commentary for the Seismic Rehabilitation of Buildings, ASCE, 2000) is followed for the detailed seismic assessment of the building. In order to improve earthquake resistance of the building, reinforced cement jacketing of the main load-carrying walls and application of fiber reinforced polymer (FRP) bands to the secondary walls are proposed.

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