新旧抗震规范下飞燕式桁架拱桥抗震分析

摘要

选取飞燕式桁架拱桥为研究对象，利用大型有限元分析软件建立全桥模型，分别基于89规范和08细则中各项规定进行计算、分析和比较。结果表明新、旧抗震规范进行抗震计算结果出入较大，新抗震规范安全保障性更高。%　　Aflyingswallowtypearchbridgeisselectedasresearchobjectinthispaper.AFEMsoftwareisusedto establishamodalofthewholebridge.Calculationandcomparationisdonebasedonthe2008and1989seismiccode separately.Theresultsshowabigdifferencebetweenthetwocodes,andthenewoneprovidesabettersecurity.