低温建筑技术-结构工程Dec.2022No.294DOI：10.13905/j.cnki.dwjz.2022.12.025大跨度斜拉桥主塔竖转施工期风振响应实测与分析FIELDMEASUREMENTANDANALYSISOFWIND-INDUCEDVIBRATIONRESPONSESOFALONG-SPANCABLE-STAYEDBRIDGEDURINGTHEVERTICALROTATIONOFTHETOWER钟仁亮1，张伟威2，刘振1，何飞1，吴文洋1（1.中建八局发展建设有限公司，山东青岛266000；2.哈尔滨工程大学，哈尔滨150001）ZHONGRenliang1,ZHANGWeiwei2,LIUZhen1,HEFei1,WUWenyang1（1.ChinaConstructionEighthBureauDevelopmentandConstructionCo.,Ltd.,ShandongQingdao266000,China;2.HarbinEngineeringUniversity,Harbin150001,China）【摘要】为研究斜拉桥桥塔竖转施工阶段结构风致振动响应，结合青岛市海洋活力区海口路跨风河新建桥梁结构健康监测系统，实测主塔竖向转体施工期桥位风环境和结构振动加速度，采用统计方法分析主塔和主梁的振动响应与桥位风速的关系。结果显示，桥塔竖转施工主要引起主塔顺桥向和主梁横向的振动；主塔顺桥向、横桥向以及主梁竖向振动加速度响应与平均风速基本呈线性关系，说明斜拉桥竖转期间风环境对桥梁结构的振动影响不容忽视，为斜拉桥主塔竖转施工的安全性提供参考。【关键词】斜拉桥；竖转；结构健康监测系统；风振响应；现场实测【中图分类号】TU312【文献标志码】A【文章编号】1001-6864（2022）12-0114-05Abstract：Thewind-inducedvibrationresponseofthestructureduringtheverticalrotationconstructionstageofthecable-stayedbridgetowerisstudied.AstructuralhealthmonitoringsystemisemployedinthenewbridgeacrosstheriveronHaikouRoad,QingdaoOceanVitalityZone.Thewindenvironmentandstructuralvibrationaccelerationofthebridgeduringtheverticalrotationconstructionofthemaintoweraremeasured,andtherelationshipamongthevibrationresponseofthemaintower,themainbeam,andthewindspeedofthebridgeisanalyzedbystatisticalmeth⁃od.Theresultsshowthattheverticalrotationconstructionofthebridgetowermainlycausesthevibrationofthemaintoweralongthebridgedirectionandthehorizontalvibrationofthemaingirder;thevibrationaccelerationre⁃sponsealongthebridgedirection,transversedirectionofthemaintower,andtheverticaldirectionofthemaingirderisbasicallylinearwiththeaveragewindspeed,whichindicatesthattheinfluenceofth...
