| China is located in the area of high incidence of earthquake,and the earthquake damage is serious.With the continuous development of our country’s economy,people pay more attention to the seismic performance of the structure.In recent years,energy dissipation and reinforcement technology has been widely used in strengthening and rebuilding engineering.The buckling-restrained braces have good hysteretic energy dissipation performance.In this paper,XinBai square increasing storey project as the project background,analysis of the buckling-restrained brace in the application of building reinforcement and reconstruction,the main work is as follows.Through the calculation and analysis of the original structure,the problems of the structure after the increase of the storey are found.Putting forward three kinds of transformation scheme: expanding frame column section reinforcement scheme,changes to the shear wall structure system,buckling-restrained brace reinforcement scheme.Using PKPM,YJK and MIDAS and other structural analysis software,according to the three transformation schemes,we carry out the structural calculation analysis under the same seismic performance target,and carry out the comprehensive comparison of three schemes,such as the construction period and the project cost.The results show that: compared with the traditional reinforcement and transformation methods,such as enlarging section and increasing the anti-seismic wall and increasing the lateral stiffness of the structure,the addition of buckling-restrained braces will enhance the seismic performance of the structure more significantly and the economic index is better.In view of the application of buckling restrained braces in reinforcement and reconstruction projects,a new wet connection mode is proposed in this paper.This way can effectively reduce the stiffness of the ends of the frame beam due to the transformation of the connection nodes,and cause damage to the original structure due to the bolt drilling. |
