| Due to the advantages of light weight and small modulus of elasticity, the ceramsite concrete has good seismic performance in the projec. However, ceramsite concrete structure design code of our country is not mature yet which makes our engineering application is in the lack of technical and theoretical support. In this paper,the performance of the ceramsite concrete frame is studied.(1)In the experiment, five ceramsite concrete frames were made. Test loading device 、test system and the methods of the measurement were introuced.(2)Five ceramsite concrete frames aseismic pseudo-static test were completed.The cracks development of the frames under low cycle reciprocating load were observed and the strain gauge load- strain curves of Steel bar were also measured.(3) By analyzing the hysteresis curves of the ceramsite concrete frame, the energy dissipation ability was evaluated. Skeleton curve, stiffness degradation curves and energy consumption curve were also drawn out. Besides, the framework features load and displacemen were obtained. Then the bearing capacity, ductility, energy dissipation and stiffness egradation performance were also studied in this paper. The results showed that:with the increase of column longitudinal reinforcement ratio,axial compression ratio and the ratio of column in a certain range, the bearing capacity of the ceramsite concrete frame was also improved.(4)Based on the experimental investigation, a nondimensionalized framework curve model of the five-truss ceramic concrete framework are got by Origin, then rule of the positive and negative load and the reloading rigidity are got by further study.Combing the model and rules, the resilience model of ceramic concrete framework are raised, then the framework curve model are got by calculation. Comparing the model and curve, the result shows that the resilience model has a good imitative effect, so it could be applied on the analyzing of elastoplastic earthquake. |
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