Application of combined shock absorption technology in reinforcement retrofitting project
Taking the reinforcement and retrofitting of emergency projects during the COVID-19 as an example,the application of combined shock absorption technology in reinforcement and retrofitting projects was mainly explored.In view of the insufficient seismic performance of the existing structure,the insufficient width of the seismic joint,the insufficient overall torsion and local seismic bearing capacity of the structure,taking into account the amount of reinforcement engineering,minimizing the impact on the original building and the cost of reinforcement,the combined shock absorption technology(VFW+BRB)was finally adopted to strengthen the original frame.According to the actual situation of the project,the performance objectives and designs were formulated according to different parts and importance.The results of the calculation show that the structure reinforcement by the combined shock absorption technology can significantly reduce the vertex displacement and horizontal acceleration,reduce the seismic response,and improve the seismic redundancy of the structure.