Study On Seismic Performance Of Shear Wall Reinforced With High Performance Concrete

As one of the most widely used high-level structural anti-side force structural systems,the shear wall structure is protruding in the structural seismic,but due to various reasons,different degrees of damage occurs after the disaster such as the earthquake.It is mainly manifested as the root failure,thereby causing insufficient structural seismic performance,so reinforcing the shear wall structure is an imminent thing.In order to study the reinforcement effect of high-performance concrete fiber reinforced cement-based composites（ECC）and ultra-high-performance concrete（UHPC）in the seismic performance repair process of concrete shear wall,this paper uses ECC and UHPC to shock-free reinforced concrete in the test,respectively.The shear wall performs seismic repair and reinforcement,and then the static test study of the repair rear shear wall member.The reinforcing test piece has the same crosssectional size and axial pressure ratio,to repair concrete species,the original member mounting steel type as a variation factor,by comparing the destruction mode,load capacity,energy consumption ability,and deformation capability of the test piece in the two tests before and after observation,The difference in stiffness degradation,establish a finite element model of the reinforced shear wall,numerical analysis of the model,and compare the calculation results of the positive cross-section bending capacity model,comparing the test results,comprehensive evaluation adopts high performance concrete The reinforcement effect of the seismic resistance of the concrete repair of the concrete is reinforced,and the main conclusions are as follows:（1）Through the use of ECC,UHPC by the reset shear wall,the reinforced test piece is reinforced,and the reinforcing test piece is subjected to a low-week reciprocating test.Seismic performance and compared with the initial test piece test results.The results show that the high-performance concrete is used to reinforce and repair the shocking self-reset shear wall not only restore the carrying capacity of the test piece,but also has a certain degree of improvement for the ductility and energy consumption capacity of the test piece,while the test piece still has good The self-reset effect,the deformation recovery capacity is more than 80%,and the seismic performance of the member is improved.（2）By studying the shear wall test results,the theoretical calculation of shear wall positive cross-section is carried out,and the cracking state,yield state,peak state,and limiting state,and the cage of the bending moment,and the lower state are proposed.By comparing the theoretical calculation results,the calculation of the calculation formula of the theory is high,indicating that the formula can accurately describe the stages of each stage of the shear wall.（3）Established the RW-SMA-ECC,RW-SMA-UHPC shear wall numerical analysis model,established a shear wall fiber unit model based on the Open Sees platform,and the low-week reciprocating load is performed,and the numerical analysis results show The numerical simulation results are better with the experimental results,verify the correctness of the model,and highly simulate the self-reset ability of the shear wall.