防灾减灾工程学报2024，Vol.44Issue(2)：381-388,425,9.DOI:10.13409/j.cnki.jdpme.20221209001
钢管混凝土输电塔地震易损性研究
Study on Seismic Vulnerability of Concrete-Filled Steel Tube Transmission Towers
摘要
Abstract
The interaction between concrete and steel tubes in concrete-filled steel tube(CFST)trans-mission towers makes their seismic vulnerability different from that in ordinary concrete transmission towers.To compare and study these differences,the article examined the interaction between steel tubes and core concrete from a material constitutive model perspective.It used finite element software OpenSees to establish a model for the CFST transmission tower and analyzed its structural response.Incremental dynamic analysis was then applied to delineate vulnerability curves under various condi-tions,including frequent,design basis,rare,and extremely rare earthquakes.Furthermore,the quan-titative influence of the first cycle spectral acceleration on the failure probability of CFST transmission towers was assessed.The results of seismic vulnerability were compared with those of ordinary trans-mission towers.Findings indicated that CFST transmission towers were less vulnerable to severe damage or collapse under the actions of frequent,design basis,rare,and extremely rare earthquakes.The first cycle spectral accelerations were mostly between 1.0g～1.4g.With the increase in earthquake intensity,the seismic performance of CFST transmission towers became worse than that of ordinary transmission towers.关键词
钢管混凝土输电塔/IDA/易损性分析/OpenSees/抗震性能/结构响应分析Key words
concrete-filled steel tube transmission tower/incremental dynamic analysis/vulnerability analysis/opensees/seismic performance/structural response analysis分类
建筑与水利引用本文复制引用
陈保健,杜轲,王飞..钢管混凝土输电塔地震易损性研究[J].防灾减灾工程学报,2024,44(2):381-388,425,9.基金项目
国家自然科学基金项目(51878631)、黑龙江省自然科学基金项目(LH2019E098)资助 （51878631）
