The Seismic Resistance Function Research Of High-rise Building Disposed Steel-Concrete Column

Since the reform and opening, with the rapid development of high-rise buildings and super high-rise buildings in China, people gradually realized that the steel and concrete composite structure, compared with the traditional concrete structure and steel structure, it has many advantages such as small size, good ductility, conducive to construct, fire anti-corrosion, good seismic performance and so on, so it more and more appeared in the middle of the line of sight of people.In this paper, firstly, we systematically summarize the steel-concrete composite structure types and characteristics and the research actuality at home and abroad,then individually discusse elastic analysis, the static structure of elasto-plastic analysis (Pushover), dynamic elastic-plastic time history analysis,including their principle, assumptions, calculation method and seismic wave selection, structure calculation model, structure restoring force model, etc.Next, combining with an actual high-rise building, respectively established three structure model, namely model configured common reinforced concrete column (RC column), model configured SRC column and model configured CFST column, and analyse on them by elastic analysis, static elastic-plastic analysis and dynamic elastic-plastic time history analysis, get their basic cycle, displacement, shearing force, bending moment, interlayer displacement angle, etc. Then use them to draw charts, contrast and research the seismic performance of the model configured SRC column and model configured CFST column.Through the comparative analysis, we find that the basic cycle of all three model are close, their period ratio are all less than 0.85, cycle, and the first order modes are Y directions mode of vibration, the second order mode are X directions mode of vibration, and they are all translational mode of vibration. The third order modes are torsional mode of vibration. The displacement and interlayer displacement angle of SRC model and RC model are generally identical. The displacement and interlayer displacement angle of CFST model are less than the ones of RC model. Meanwhile, the shearing force, bottom shear, overturning moment, seismic response force of the SRC model and CFST model are all less than the ones of RC model. These three models can meet the checking of resistance to collapse of 8 degrees much met earthquake and rarely met earthquake by elastic-plastic static analysis, and their demand interlayer displacement angle of much met earthquake and rarely met earthquake all meet standards. The above analysis show that although the section size of columns are evidently less than the structure configured common reinforced concrete column, the structure configured SRC column and structure configured CFST column still have good seismic performance.