Research on Application of Combined Seismic Reduction Technology in Frame Structure Reinforcement and Renovation in Context of Urban Renewal
Implementing urban renewal actions is an important measure for China to improve the quality of urban development and meet the needs of people for a better life.At present,the total number of existing buildings is huge in China,while many of them can no longer meet the current seismic fortification goals,which is urgent to carry out reinforcement and renovation.The use of energy dissipation and seismic reduction technology can significantly improve the seismic performance of building structures,protect the main structure from damage,and in some cases,reduce seismic structural measures.This article takes an existing library building as an example.Due to the adjustment of the zoning map and seismic classification standards,the seismic fortification intensity and seismic grade of the building have been increased.A combination of buckling constrained brace and viscous dampers is used to reduce seismic effects,increasing both structural stiffness and structural damping.The time and process analysis on nonlinear seismic working conditions is conducted on the structure under frequent,fortified,and rare earthquakes.The inter displacement angles in all three stages met the requirements,and the horizontal acceleration of the floor is well controlled.Buckling constrained brace and viscous dampers dissipated some seismic energy,reducing damage to the main structure.
urban renewalreinforcement and renovationbuckling constrained braceviscous damper
万方数据
维普
