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《Sichuan Building Science》 2017-04
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Test and analysis on seismic performance of RAC columns under different silica content

ZHANG Shimin;WANG Sheliang;ZHANG Mingming;WANG Kena;School of Civil Engineering,Xijing University;School of Civil Engineering,Xi'an University of Architecture and Technology;  
In order to study the seismic performance of RAC column silica fume enhanced,this paper selected one common RAC column as the control group,and the three column containing 4%,6% and 8% silica fume as the experimental group,combined with ABAQUS finite element simulation,the broken ring model,skeleton curve,bearing capacity,ductility,energy dissipation and damage stiffness degradation properties of RAC column were analyzed. The results showed that the finite element simulation results coincided well with the test results,the destroy of RAC column were first in the column foot began to produce cracks,and gradually expanded upward,finally,the concrete column feet began to appear destruction and abscission. In the doped silica fume content of 6% cases,the seismic performance of RAC column had been improved. The ductility of the column or the energy dissipation capacity decreased,and the stiffness and bearing capacity were degraded rapidly.
【Key Words】: silica fume ABAQUS skeleton curve energy dissipation capacity ductility bearing capacity
【Fund】: 国家自然科学基金资助项目(51178388 51008245 51678480);; 陕西省教育厅重点实验室科研计划项目(11JS059 12JS055);; 陕西省科技统筹创新工程计划(2013SZS01-Z02 2013SZS01-K01);; 陕西省工业攻关项目(2014K06-34);; 2015级研究生创新基金(2017-YJSXM-21)
【CateGory Index】: TU352.11;TU37
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