Study on Nonlinear-Response History Analysis of Mid to High-Rise Reinforced Concrete Buildings

• Main Author: Tirza Paramitha Pamelisa
• Other Authors: Chien-Kuo Chiu
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/97579852749172757714

碩士 === 國立臺灣科技大學 === 營建工程系 === 105 === The latest devastating earthquake in Taiwan is Meinong earthquake, which happened on 2016 and made eight (8) buildings with 2-16 stories had collapsed. The seismic evaluation study of mid to high rise buildings became essential to avoid the failure happened in the future. One alternative way to do the seismic evaluation of building is to perform nonlinear response history analysis. Nonlinear response history is an approach to clearly understand the real behavior of structure by inputting the real ground motion from representative earthquake excitation. The failure can be defined by global performance and component performance. Global performance is determined by the story drift, whereas component performance is determined with column rotation. In this research, several simple study case will be performed using several methods of defining the inelastic hinge properties. Compatibility of each method will be observed to be assigned in nonlinear response history analysis on mid to high rise building. Xingfu Building and Weiguan Building, which collapsed during Meinong earthquake, will become representative case of mid-rise and high-rise building. Using two ground motions, three cases of Xingfu Building has been performed: frame only case (Case A), frame with brick wall case (Case B), and frame with brick wall on 3rd floor to roof (Case C). On the other hand, two cases of Weiguan Building has been performed using nonlinear response history analysis: frame only case (Case A) and frame with considering brick wall (Case B). High axial ratio (more than 0.3 Agfc’) was observed during the earthquake in Xingfu and Weiguan building. Several columns undergo axial load more than its capacity in Weiguan Building case. The comparison result shows that the modeling of brick wall in analytical result is essential since the configuration of brick wall could affect the seismic behavior of mid to high rise building. Collapse has been defined using axial load check, drift ratio check, and ductility ratio check. Based on the analysis of Xingfu Building, under PGA 0.24g Case C could be defined as collapsed and under PGA 0.425g, Case A and C could be defined as collapsed. On the other hand, Weiguan Building under PGA 0.14g and PGA 0.425g could be defined as collapsed for Case B.