Earthquake Response Study On RC Frame-core Wall Structure With High Thick-slabs Transfer-storey

High thick-slabs transfer-story of high-rise structure with high theoretical research is not thorough, the elastic seismic response analysis is relatively common, but the analysis of the elastic-plastic response is relatively rare. In this paper, the elastic and elastic-plastic earthquake response of reinforced concrete (RC) frame-core wall structure with high thick-slabs transfer-story was studied.The response spectrum analysis method of mode decomposition was used to investigate the influence of earthquake intensity, location of thick-slabs transfer-story, transfer-slab thickness and lower-story stiffness on the structural response by parameter analysis, such as structural vibration period, inter-story drift and story shear force. The dynamic time-history analysis is used to investigate the earthquake intensity influence, location of thick-slabs transfer-storey, transfer-slab thickness, lower-storey stiffness and storey yield strength, on the structural elastic-plastic response, such as inter-storey drift and storey shear force. The results demonstrated that inter-story drift and story shear force increases with increase in earthquake intensity, which is more significant due to increase in earthquake intensity. The translational period decreases and torsion period increases with the rise of transfer-story. The structural dominant drift is increasingly changed to the drift of lower stories from the drift of upper stories, and the share of story shear force increases in frame-supporting columns adjacent transfer-story stories. The overlarge transfer-slab thickness is disadvantageous to the lower stories, which can amplify the torsion effects. The structural period ratio increases with increase in thickness of core wall, while the structural period ratio decreases with increase in section of frame-supporting columns. The elastic-plastic earthquake response results demonstrate that the inter-storey displacement decreases with the increase in section of frame-supporting columns and thickness of core wall, but the storey shear of the lower stories increases simultaneously. The storey yield strength has important influence on the structural displacement response.