Seismic Performance Research Of Rc Frame Structures Reinforced After Reinforcement

With the updating of the specifications constantly,The safety of the reinforced concrete(RC)frame structure has been attracted more attentions due to seismic performance can not meet the requirements of updated specification.Although the buildings,who exist many problem,will not be removed or rebuilt because of the enormous investment,expensive demolition and impact of people's normal life.In order to seek a reasonable solution,people turn their attention to reinforcement and transformation of the existing housing,which can preserve the original building and ensure its safety.In this paper,the finite element software is used to study the seismic performance of RC frame structure with the shear wall and buckling restrained brace.The main conclusions are as follows:1)In the analysis,the elastic inter-story displacement angle of the original RC frame structure in the X and Y directions and the cycle ratio exceeds the limit requirements of the elastic inter-story displacement and the angle cycle ratio on "Code for Seismic Design of Buildings"(GB50011-2010)and "Technical Specification for Concrete Structures of High-rise Building"(JGJ3-2010);2)The elastic inter-story displacement angle in the X and Y directions and the cycle ratio is under control in the structural corner and the addition of 300mm thick shear wall on stairs,which meet the limited requirement of the specification,According to the "Technical Specification for Concrete Structures of High-rise Building"(JGJ3-2010);3)The elastic inter-story displacement angle in the X and Y directions and the cycle ratio is under control in the same position with the equivalent collecting area of 80mm×80mm buckling restrained brace,which meet the limited requirement of the specification,and comparison between the shear wall reinforcement and buckling restrained brace has been analysed;4)The shear forces in the X and Y directions after the shear wall reinforcement is 6580.18kN and 7344.62kN respectively,and the shear forces in the X and Y directions after the buckling restrained brace reinforcement is 5853.57kN and 5814.44kN respectively;5)The seismic performance of three different support arrangements,which is herringbone-shaped reinforcement,V-shaped support reinforcement and the first layer herringbone-shaped and 2 to 10 V-shaped reinforcement has been analysed.The three seismic effect is obtained.