Prefabricated Steel Reinforced Concrete Column Joints Seismic Performance Research And Plication

Given(that) the country in recent ten years are advocating saving energy, saving land, protecting the environment and encouraging the development of housing industrialization.These policies will lead to more scholars further study of prefabricated steel reinforced concrete structure of the related technical problems. And fabricated steel reinforced concrete frame structure as a new way of industrialized building structure form, will be fabricated steel reinforced concrete structure of beams,columns, plates and supporting the main stress components in the factory prefabrication.After transport hoisting, the prefabricated according to the principle of frame supporting structure in the construction site for Mosaic assembled to form the structure of the system. This structure system can cooperate well and can give full play to the advantages of both, such as short construction period, the better quality key nodes, high bearing capacity, larger living space, less land, environmental protection,such as low consumption, the economic benefit of pious advantages, is recognized as China's construction cause in the history of the development of a sustainable production technology, which has got more and more favour of investors and designers.At present, the domestic of prefabricated steel reinforced concrete frame structure system of related nodes splicing technology research is still in the early exploration stage, not only in the actual seismic performance of the imperfection of the experimental study, but also in the deficient results of finite element simulation analysis. It puts forward more severe challenges to the prefabricated steel reinforced concrete frame structure of the promotion and use. So it is necessary to study prefabricated steel reinforced concrete member placeholder and mechanical properties of wet job processing node more comprehensively and detailedly, which provides necessary theoretical basis for node seismic design on later project.This article is based on the existing domestic prefabricated steel reinforced concrete column and column connection parameters of test data for comparison.At the position so as to put forward a kind of optimization is more reasonable to facilitate the construction of prefabricated steel reinforced concrete column and column connection mode, and by using nonlinear finite element software of ABAQUS respectivelyestablish cast-in-place steel reinforced concrete and prefabricated steel reinforced concrete related nodes connection of two different entity models, and then the corresponding to the two models beam-column node, and the column location optimization- column connections for numerical analysis.The first research work content is mainly on the establishment of fabricated SRC structure finite element model and analysis of bolt connection. Firstly, collect the existing specification of SRC structure and scientific research achievements; Secondly,research respectively on precast SRC structure in each unit type, material constitutive relation and the contact finite element process simplified way; Finally, analyze the finite element on the rationality of the design of seismic performance of local bolt and complete the precast and cast-in-place SRC structure finite element model of parameter Settings. Results show that two kinds of structure adopted by the finite element modeling approach has certain practical significance and also has good reference value to the practical engineering or science experimentThe second research content mainly analyzes fabricated SRC structure and corresponding node position of the cast-in-place SRC structure damage deformation,hysteresis curves, skeleton curves and seismic performance, etc. Respectively based on the principle of parameter analysis method, the precast SRC and cast-in-place SRC structure is not under the axial compression ratio and different concrete strength analysis of the mechanical properties such as seismic parameters. Results show that the finite element simulation model of two kinds of SRC in the corresponding position of damage deformation in general has the similarity.The seismic resistance of corresponding analysis results basically correspond to related indexes.It is concluded that prefabricated SRC can vary according to the existing of cast-in-situ SRC specification for design and construction of the conclusion. At the same time, this paper puts forward the optimization of the fabricated SRC column and column node area, through the finite element model analysis results, the corresponding position of the node area, mechanical properties and full cast-in-place SRC structure in the same position in a certain range of allowable error match degree is higher and it's the basic equivalent of cast-in-situ seismic performance of the same location of SRC column. So the location of precast connection construction is convenient and the mechanicalproperties are good as well.Finally, some design suggestions on prefabricated steel reinforced concrete structure nodes reserved location selection for this paper remains to be perfect.