Abstract:

In this study, the lithological, stratigraphic properties and weathering conditions of the rock/soil units outcropping in the area where Balıkesir University Engineering Faculty Main Building and Annex Building are located were examined; in addition, the type, class, physical, dynamic and elastic properties of the foundation soil were determined. In the clayey limestone-claystone-marl alternation at the bottom of the study area, the mean transverse and longitudinal wave velocities are 1223 m/s and 660 m/s, respectively; in sandy silty clay at the top, they are 621 m/s and 298 m/s, respectively. The modulus of elasticity varies between 309-561 MPa in the upper unit, while it varies between 2460-2570 MPa in the lower unit. The soil type in the study area is in ZC class and considering this soil type, the short period design spectral acceleration coefficient for the standard design earthquake ground motion (DD-2) is 1.020; the design spectral acceleration coefficient for the 1.0 second period was also obtained as 0.315. Besides, the Horizontal Elastic Design Spectrum and the Vertical Elastic Design Spectrum were obtained for the standard design earthquake ground motion considering the foundation soil type in the Engineering Faculty Buildings. The data obtained in this study provided the basis for the earthquake risk analysis for Balıkesir University (BAUN) Engineering Faculty buildings.

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