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Title |
Analytical Study on Hybrid Precast Concrete Beam-Column Connections
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DOI |
https://doi.org/10.4334/JKCI.2013.25.6.631 |
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Keywords |
보-기둥 접합부 ; 하이브리드 연결부 ; 비선형 유한요소해석 ; 압축력 ; 휨강도비 beam-to-column joint ; hybrid connection ; non-linear finite element analysis ; axial load ; flexural strength ratio |
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Abstract |
Non-linear finite element analysis for newly developed precast concrete details for beam-to-column connection which can be used in moderate seismic region was carried out in this study. Developed precast system is based on composite structure and which have steel tube in column and steel plate in beam. Improving cracking strength of joint under reversed cyclic loading, joint area was casted with ECC (Engineering Cementitious Composites). Since this newly developed precast system have complex sectional properties and newly developed material, new analysis method should be developed. Using embedded elements and models of non-linear finite element analysis program ABAQUS previously tested specimens were successfully analyzed. Analysis results show comparatively accurate and conservative prediction. Using finite element model, effect of axial load magnitude and flexural strength ratio were investigated. Developed connection have optimized performance under axial load of 10~20% of compressive strength of column. Plastic hinge was successfully developed with flexural strength ratio greater than 1.2.
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