Experiment on seismic performance of cement polystyrene insulation formwork concrete columns
Two concrete column specimens with cement polystyrene insulation mold on one side and insulation mold around were made,and two corresponding ordinary concrete column control specimens were also designed.The seismic performance of each specimen was tested by quasi-static loading method,and its hysteretic performance,skeleton curve,ductility,stiffness degradation,energy dissipation capacity and damage characteristics were analyzed.The results showed that the cement poly phenyl thermal insulation mold could delay the concrete cracking,the concrete column angle was destroyed before the thermal insulation mold,and the interface between the thermal insulation mold and the concrete column was not damaged,and the mold and the specimen were stressed cooperatively to form a whole;The bearing capacity,ductility and cumulative energy consumption of the specimen with insulation mold shell on one side increased by 5.0%,6.0%,and 10.7%,respectively.The specimens with thermal insulation mold around them increased by 17.0%,26.0%,and 23.3%,respectively;Setting cement polystyrene insulation mold in concrete column can not only play the role of heat preservation and heat insulation,but also significantly improve the seismic performance of the structure.
NETL
NSTL
万方数据
