Finite-element Analysis Of Mechanical Behaviors Of Normal Cross-section Of Steel Recycled Concrete Composite Columns

With developing of global economy, increased urbanization level and concretedosages, give rise to exploit natural resources and create construction waste in quantity.Steel recycled concrete (SRRAC) composite structure is a new structure, which wasrecycled concrete (RC) in the configuration section, and also comes with a smallamount of steel and stirrup. At present studying on the steel recycled concrete wasrarely.Research group design and produce6axial specimens and9eccentric compressionspecimens to study the recycled aggregate replacement ratio, eccentricity of steelrecycled concrete column capacity of eccentric compression and recycled aggregatereplacement ratio, slenderness ratio of steel recycled concrete column axial compressivebearing capacity. Owing to experimental study exist limitation, this text based onexperimental study process analysis and solution with the help of OpenSees.1. The simulation of6axial specimens and9eccentric compression specimens isbased on OpenSees, meanwhile modeling method is also studied. The results based onOpenSees coincide with experimental results preferably, indicating that using OpenSeesto simulate the loading process of steel reinforced recycled aggregate concrete columnsis credible.2.Based on experiment and OpenSees, the influence of recycled aggregatereplacement ratio, slenderness ratio, concrete strength, eccentricity, shape steel strengthand steel content parametric is researched. Results indicate that: the influence ofreplacement rate of recycled aggregate on the bearing capacity is not obvious; Theaffect of concrete strength to the flexural capacity of composite columns is obvious, theaffect of concrete strength to the flexural capacity of composite columns is consistent with the different eccentricity; The influence of slenderness ratio on the flexuralcapacity of composite columns is obvious, the influence of slenderness ratio is increaseas the increasing of eccentricity; With the increasing of eccentricity relative, the bearingcapacity is decreasing, while the influence of eccentricity relative to the bearingcapacity is decreasing, but the degree is not obvious; The affect of shape steel strengthand steel content to the flexural capacity of composite columns is bigger, with theincreasing of shape steel strength and steel content, the increasing of bearing capacity isobvious, while the affect of the parametric changes to axial specimens is slightly greaterthan eccentric compression.