Assessment of Geotechnical Properties of Settlement Area Soil: A Case Study of Burdur Province, Türkiye
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The Türkiye Earthquake Zones Map shows that Burdur's core, in a first-degree earthquake zone, has suffered catastrophic earthquakes that killed and damaged people. To reduce earthquake damage, soil geotechnical attributes must be accurately assessed and structures built in accordance with ground dynamics. This study will determine the physical and mechanical properties of the soils in Burdur city center's urban settlement region and estimate structural concerns using geotechnical data. The research region was uniformly characterised by soil borings at 28 places to a depth of 300 metres, along with Standard Penetration Tests. Following Turkish Standards Institute guidelines, disturbed (D) and undisturbed (UD) drilling samples were tested for unit weight, water content, sieve analysis, Atterberg limits, and shear box tests. USCS-based soil classifications and Terzaghi-based bearing capacity calculations were used. The research findings indicate that the prevailing soil profile in the study region is predominantly categorised as inorganic clay, clayey gravel, and silty clay, with a majority of low- to medium-plasticity clay (CL). The flexible nature of this dominant soil may increase ground amplification during an earthquake. Conversely, it has been noted that the sand content in the soil of specific areas within the Bağlar, Karasenir, and Bahçelievler neighbourhoods is considerably elevated; it has been established that these regions possess a substantial liquefaction potential due to water absorption and the increase in groundwater levels. The research underscores the imperative of site-specific ground enhancement measures and foundation drainage systems for secure building.
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