Study Of Seismic Behavior On Steel High-Strength Reinforced Concrete Columns

Steel high-strength concrete is a product of the combination of steel and high strengthconcrete, a new direction for the development of modern steel and concrete structures. Senior,suffered by the high-rise building structure at the bottom of column axial pressure, such asstill reinforced concrete columns due to axial compression ratio limit, resulting in the columnsection size is very large, not only affects the use of functional, and often form is notconducive to seismic short column. A large number of tests showed that the steel reinforcedconcrete due to steel-sharing part of the axial force can effectively reduce the concrete part ofthe axial compression ratio and improve the seismic performance of the column. Therefore,the steel reinforced concrete columns, especially intensified SRC columns have been morewidely used in modern buildings. Based on the seismic performance of steel high-strengthconcrete columns, including the following aspects:First，Based onU certainn basRic assuemptiogns, initesrnallty weith crross-shaped steel reinforcedhigh strength concrete columns seismic performance study is given by calculating the axialcompression ratio of the cross with steel reinforced high strength concrete columns.Second, In this paper, shaped with steel cruciform steel high strength concrete columnswith steel axial compression ratio formula, analysis of the steel cross-section form and withthe amount of steel than the limits on the axial compression and axial compression ratio istheimpact of steel an important indicator of the seismic performance of high strength concretecolumns.Third, Three different steel in the form of steel, the bearing capacity of high strengthconcrete columns were analyzed and compared. The results show that, with flangecross-shaped steel, steel high-strength concrete columns carrying capacity is significantlybetter than the other two steel in the form of steel bearing capacity of high strength concrete columns under the same conditions.Fourth, ANSYS numerical simulation methods, respectively, compared to a steelcross-section form and the axial compression ratio of the bearing capacity of steel of highstrength concrete columns and ductility. From the load-displacement curve and ductilityfactor can be seen, the greater the ductility factor, the better the seismic performance, ductilityductility ratio with flange cross-type steel column without flange steel columns of cross type,because the flange can make a pillar resistance to lateral deformation capacity and carryingcapacity greatly improved; shaped type steel columns only in its configuration the strong axisof the beam showed good ductility.