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Seismic Behavior of Columns in Ordinary and Intermediate Moment Frames
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 Title & Authors
Seismic Behavior of Columns in Ordinary and Intermediate Moment Frames
Han Sailg-Whan;
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Moment frames have been widely used in building construction. In current design codes, concrete moment frames are classified into ordinary, intermediate, and special moment resisting concrete frames (OMRCF, IMRCF, SMRCF)). The objective of this study is to investigate the seismic behavior of columns in ordinary moment resisting concrete frames (OMRCF) and intermediate moment resisting concrete frames (IMRCF). For this purpose 3 story OMRCF and IMRCF buildings were designed and detailed in compliance to ACI 318 (2002) and KCI (1999). In this study the buildings were assumed to be located in seismic zone 1 classified by UBC (1997). This study considered the columns in the 1st story since these columns shall resist the largest axial and lateral forces during an earthquake. Eight 2/3 scale column specimens were made for representing the upper part and lower part of exterior and interior columns of the OMRCF and the IMRCF Quasi-static reversed cyclic loading was applied to each specimen with a constant or varying axial load. Test results show that seismic behaviors of columns are influenced by existence of lap splices, axial force levels, and lateral reinforcement at possible plastic hinging region. However, the effect of such variables strongly co-related to each other.
seismic behavior;design;detail;columns;reinforcement;
 Cited by
American Concrete Institute (ACI), 'Building Code and Commentary ACI 318-02,' ACI, Detroit, Michigan, 2002

Portland Cement Association (PCA), 'Notes on ACI 318-02 Building Code Requirements for Structural Concrete,' PCA, Skokie, Illinois, 1999, 2002

Han, S. W., Kwon, O. S., Lee, L.H., and Foutch, D. A., 'Seismic Performance Evaluation cf Ordinary Moment Resisting Concrete Frames,' SRS No.633, UILU-ENG-2001-2004, ISSN 0422-1744, July, 2002

Han, S. W., Kwon, O. S., Lee, L.H., 'Evaluation of the seismic performance of a three-story ordinary moment resisting concrete frame,' Earthquake Engineering and Structural Dynamics, Vol.33, Wiely and Sons, 2004, p. 669-685 crossref(new window)

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