钢-钢壳混凝土混合桥塔抗风性能试验研究  

Experimental Study on Wind-resistant Performance of Steel-Steel Shell Concrete Hybrid Bridge Tower

作　　者：宁立 梁立农 王文赞 封周权[2] 刘明慧 宣欣岩 Ning Li;Liang Linong;Wang Wenzan;Feng Zhouquan;Liu Minghui;Xuan Xinyan(Guangdong Communication Planning&Design Institute Group Co.,Ltd.,Guangzhou 510507,China;Hunan Provincial Key Laboratory for Wind and Bridge Engineering,Hunan University,Changs ha 410082,China)

机构地区：[1]广东省交通规划设计研究院集团股份有限公司,广东广州510507 [2]湖南大学风工程与桥梁工程湖南省重点实验室,湖南长沙410082

出　　处：《市政技术》2023年第11期9-15,21,共8页Journal of Municipal Technology

基　　金：湖南省高校创新平台开放基金项目(17K022)。

摘　　要：以某钢-钢壳混凝土混合桥塔为研究对象,采用不同材料的脊骨芯梁设计了桥塔气弹模型,并分别在均匀流场和紊流场中对桥塔风致振动响应进行了气弹模型风洞试验研究。研究结果表明:设计的桥塔试验模型与实际工程结构具有良好的动力相似性;桥塔在均匀流场和紊流场中都没有发生明显的横桥向和顺桥向涡激共振现象;在均匀流场中,桥塔也未发生明显的驰振现象。该混合桥塔满足结构抗风设计要求,具有较好的抗风性能,为未来类似钢-钢壳混凝土混合桥塔的抗风设计提供了有益的参考。This study was conducted by a steel-steel shell concrete hybrid bridge tower.A bridge tower aero-elastic model was designed with spine beams made of different materials.Subsequently,aero-elastic model wind tunnel tests were conducted on the bridge tower to investigate its wind-induced vibration responses under both uniform flow and turbulent flow conditions.The research findings indicate that the designed bridge tower test model exhibits good dy-namic similarity with the actual engineering structure;The bridge tower didn't exhibit significant crosswind and a-long-wind vortex-induced vibration under either uniform flow or turbulent flow conditions.Moreover,the bridge tower did not display noticeable galloping vibrations under the uniform flow condition.That the hybrid bridge tower meets the structural wind resistance design requirements and possesses favorable wind-resistant performance.This study provides valuable insights for wind-resistant design of similar steel-steel shell concrete hybrid bridge towers in future.

关 键 词：斜拉桥 钢-钢壳混凝土混合桥塔 抗风性能 气动弹性模型 风洞试验 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]