Technical Application of Additional Seismic Reduction Technology in Existing Frame Structure Reinforcement
A concrete frame structure building in Hangzhou adopts viscous damper for shock absorption and reinforcement design.YJK and SAP2000 software are used to analyze frequent earthquakes and rare earthquakes respectively.The results of frequent earthquake analysis indicate that the main structure remains elastic and the viscous dampers begin to function.The results of rare earthquake analysis indicate that the structural components begin to enter the plastic phase,satisfying the requirements of"strong columns and weak beams"and displacement angle,and there is a certain safety reserve.Meanwhile,all viscous dampers dissipate energy through hysteresis,demonstrating excellent energy dissipation capabilities and providing good safety guarantees for the main structure.This paper provides a reference technical solution for similar seismic reinforcement projects.
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