Seismic Performance Reliability of RC Structures: Application of Response Surface Method and Systemic Approach

The present study presents an algorithm that models uncertainties at the structural component level to estimate the performance reliability of RC structures. The method calculates the performance reliability using a systemic approach and incorporates the improved response surface method based on sampling blocks using the first-order reliability method and conditional reliability indices. The results of the proposed method at different performance levels were compared to bound techniques and the overall approach. It was shown that the proposed algorithm appropriately estimates the reliability of the seismic performance of RC structures at different damage levels for the structural components. The results indicated that performance reliability indices increased when then on-performance scenarios were examined for high levels of components damage.