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Influences of Column Orientations and Story Levels of the RC Frames under Nonlinear Static Analysis |
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(Mo Shi);(Min-woo Choi);(Yeol Choi);(Sanggoo Kang) |
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ARCHITECTURAL RESEARCH(´ëÇÑ°ÇÃàÇÐȸ ³í¹®Áý), Vol.26 No.4 (2024-12) |
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½ÃÀÛÆäÀÌÁö(127) ÃÑÆäÀÌÁö(12) |
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; Nonlinear Static Analysis; Column orientations; Structural stories; ABAQUS; SAP 2000 |
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Earthquakes present significant challenges to buildings contemporary, and the response of RC frame structures to seismic activity is influ-enced by various characteristics, including column section designs and orientation. The specific designs of column sections directly impact the lateral stiffness of the entire structure. Considering the weak story in an RC frame structure and making changes to column orientations can lead to structural issues in both vertical and lateral stiffness, resulting in weaknesses in the structural plan that increase vulnerability to seismic forces. Therefore, the most crucial aspect of seismic design is creating an efficient structural system that satisfies all seismic per-formance objectives, including considerations for IO (immediate occupancy), LS (life safety), and CP (collapse prevention) under plastic hinge analysis. In evaluating the seismic performance of buildings, nonlinear static pushover analysis has become increasingly prevalent over the past decades. This research concludes that columns with different orientations and stories exhibit different performance attributes when subjected to nonlinear static analysis using both SAP 2000 and ABAQUS. Regarding the structural influences due to different stories, this research summarizes variations in structural performance observed across columns with various orientations and heights, ranging from the first floor to the fifth floor. These findings are expected to provide valuable insights for future analyses examining the performance of column orientations as well as serve as a valuable reference for new construction of RC structures or reinforcement of existing RC structures against seismic activities. |