Seismic Performance Evaluation and Retrofitting Methods for Building Structures

摘要

Abstract

 As a sudden natural disaster, earthquakes can easily cause severe damage to buildings, making it necessary to conduct seismic performance evaluation and retrofitting of building structures. This paper systematically reviews seismic performance evaluation methods for buildings and seismic retrofitting technologies for existing buildings, and proposes a performance-based seismic evaluation method and a multi-level, multi-indicator evaluation standard. The analysis shows that structural form, material properties, construction quality, and service life are key factors affecting seismic capacity. This paper summarizes mainstream retrofitting technologies, including the addition of seismic walls, bonded steel plate reinforcement, carbon fiber reinforcement, section enlargement, and damping and isolation technologies, and compares their advantages and disadvantages, applicable scenarios, and economic characteristics. The study finds that performance-based evaluation based on damage assessment is more consistent with the actual seismic behavior of structures. An optimized retrofitting strategy that considers both technical feasibility and economic rationality can effectively improve the seismic performance of existing buildings. The findings provide a reference for building seismic evaluation and retrofitting engineering practice, and have important theoretical and practical value for improving building seismic safety and reducing earthquake disaster losses.