Numerical Analysis On Ductility Performance Of High-strength Cncrete Frame Sturcture

It is obvious that the development of structural material will promote the evolution of thestructural seismic technique and theory. Engineering practice shows that the research andapplication of high-strength concrete has broad prospects for development. High strengthconcrete has the advantages of high strength, good density. However, the high-strength concretehas relatively weak ability of the deformation, which induces a limitation of energy dissipation inthe seismic zoon. Therefore, discusses the earthquake under the action of high strength concretestructure ductility performance also become an important issue. Practice has proved that throughthe reasonable reinforcement or improve the strength of concrete and other methods caneffectively improve the deformation capacity of the structure, so as to improve the seismicperformance of the component and structure.Based on the previous research, on the basis of the analysis of application of nonlinear finiteelement Drain-2D program of high strength concrete frame structure elastic-plastic seismicresponse analysis, the main research model structure of the plastic hinge distribution, themaximal displacement and displacement Angle between layers in time-curve, etc. For theapplication of high strength concrete frame structure provides a theoretical basis.The results of research shows that the method proposed in the dissertation can notonly increase the bearing capacity of structures or members but decrease the residualdeformation after the earthquake and prevent the structure from collapse. By thecalculation results, the high-strength concrete frame structures have larger lateral forceresisting, and avoid the strong beam weak column failure mechanism. Elastoplasticinterstory drift angles don’t exceed the limit which seismic code provide. The results ofthe numerical analysis can be used as both a reference of an engineering design andfurther research in the direction.