Nonlinear Analysis Of Seismic Behavior Of Reponated Reinforced Concrete Columns

This paper presents an F RP(fiber-reinforced composite material) pipe reactive powder concrete(RPC) columns, the columns of this type incorporates FRP pipe’s good corrosion resistance, high strength properties and a strong role of the ferrule RPC active powder, with bearing capacity and good seismic performance, there is a wide range of applications. In view of this, in the subject used a large general-purpose finite element software ANSYS for the FRP pipe reactive powder concrete columns. nonlinear simulationFirstly, selected MKIN(multi- linear kinematic hardening material model) which is the appropriate constitutive material model of FRP pipe of RPC and RPC.Secondly,established the finite element model of FRP pipe reactive powder concrete columns. Model used SO LID65 solid element, clamped boundary conditions imposed full freedom of all nodes fixed constraint bottom of the columns,the top of columns coupled degrees of freedom for all nodes and applied horizontal cyclic loading.Finally,designed 19 specimens according to axial compression ratio,the thickness of FRP pipe wall, RPC strength, columns’ geometry and other parameters of the seismic performance, applied there axial compressive load and loaded simulation test about the horizontal reciprocating cyclic to obtain the level of each specimen load- displacement hysteretic curves, explored these parameters on the seismic performance of reactive powder concrete columns FRP pipe.Studies have shown that:(1) FRP pipe throughout the loading process can be an effective constraint on the RPC;(2) FRP pipe reactive powder concrete columns with a high bearing capacity;(3) Axial compression ratio and ductility of column deformability larger;(4) Increasing the wall thickness of the FRP can enhance the strength and ductility of the column;(5) The RPC intensity level higher, the less damage to the column, the higher carrying capacity;(6)The larger radius of the column, the column the greater the ultimate bearing capacity;(7) An increase in the column height of the extent of damage the column faster, seismic performance deteriorated.