Selection of Ground Motion Intensity Measure for Reinforced Concrete Structure

摘要

This paper presents analysis of different ground motion intensity measures that can be used in assessing the behavior of reinforced concrete structures. For this analysis, eight-story reinforced concrete building is selected with frame structural system in one direction and wall system in the other direction. The nonlinear time-history analysis for the considered structure is performed wherein the structure is exposed to forty natural records. Maximum of all interstorey drift ratio is selected as the seismic response parameter. After performing nonlinear analyses, diagrams that present relation between response parameter and considered intensity measured were constructed using regression analyses. The main aim is to find the most efficient intensity measures for the case of flexible reinforced concrete structures (frame systems) and stiff reinforced concrete structures (ductile wall systems), that are founded in two different soil types (rock and soft soil). Analyzing a large number of results and after their statistical analysis, it were adopted conclusions on the efficiency of individual ground motion intensity measures.