建筑结构学报2026，Vol.47Issue(3)：54-68,15.DOI:10.14006/j.jzjgxb.2025.0378
泸定地震中藏式博物馆RC框架结构震害成因分析
Analysis of seismic damage causes for a Zang-style museum RC frame structure subjected to Luding earthquake
摘要
Abstract
During the September 5,2022 Luding earthquake,a Zang-style concrete frame museum on a special site was seriously damaged.Investigations revealed that the failure causes included:topographic amplification effect of ground motion,beam-column joint with Queti detail exacerbating the"strong beam-weak column"effect,and incorrect reinforcement detailing of frame columns leading to insufficient ductility.To analyze the seismic damage causes,an integrated platform topography-structure model was established,incorporating the special joint details.Additionally,a solid finite element model of beam-column joints with the Zang-style Queti detail was developed to investigate the influence of joint configurations and reinforcement details on the seismic performance of the overall structure and individual components.Compared with simplified topography amplification factor approaches,the topography-structure interaction model yields damage locations and severity more consistent with the field survey,indicating that current codes underestimate amplification factors for such topographic conditions.Modified Zang-style joint reinforcement details can effectively reduce damage at the end of first-story frame columns.For frame structures on special sites with distinctive joint details,the following recommendations are proposed:conduct site-specific seismic response analysis to determine appropriate topography amplification factors;establish integrated topography-structure interaction models for seismic verification;characteristic decorative components should be separated from the main structure,stiffness of the unseparated joint to the overall structure and component should be considered,and the column stirrup densified region should be measured from the lower edge of the haunched beam.关键词
RC框架结构/藏式建筑/台地地形/雀替构造/数值模拟/地形放大效应/地形-结构相互作用Key words
RC frame structure/Zang-style architecture/platform topography/Queti detail/numerical simulation/topography amplification effect/topography-structure interaction分类
天文与地球科学引用本文复制引用
张蜀泸,冯远,张志军,李勋,胡江贝,陆新征..泸定地震中藏式博物馆RC框架结构震害成因分析[J].建筑结构学报,2026,47(3):54-68,15.基金项目
中国建筑西南设计研究院有限公司科研项目(R-2023-42-S-D-2024,R-2025-28-S-D-2026). （R-2023-42-S-D-2024,R-2025-28-S-D-2026）
