带转向机构HCA在杭州湾跨海大桥斜拉索减振中的应用
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摘要
杭州湾跨海大桥北航道桥为主跨448m的钻石型双塔双空间索面钢箱梁斜拉桥,通航净空为47m,按双向六车道高速公路设计,设计时速100km/h。为改善行车安全性,国内首次在栏杆外侧设置了风障(高度从近塔4.27m至远塔3.4m),为了确保整桥隽秀的景观前提下开发了带转向机构的拉索减振器,对全桥拉索进行了理论分析和安装减振器后的实桥测试。
North waterway of Hangzhou Bay Bridge is 448m cross the main bridge of the diamond-type twin double room for cable-plane cable-stayed steel box girder,navigation clearance for the 47m,six lane highway by a two-way design,the design speed of 100km / h,In order to improve traffic safety,the first set in the railings outside the wind barrier(height 4.27m from the tower near to far tower 3.4m),In order to ensure that the entire bridge elegant and beautiful landscape with the premise that the development of the cable steering damper,full-bridge cable on the theoretical analysis and the installation of shock absorber test after the bridge.
North waterway of Hangzhou Bay Bridge is 448m cross the main bridge of the diamond-type twin double room for cable-plane cable-stayed steel box girder,navigation clearance for the 47m,six lane highway by a two-way design,the design speed of 100km / h,In order to improve traffic safety,the first set in the railings outside the wind barrier(height 4.27m from the tower near to far tower 3.4m),In order to ensure that the entire bridge elegant and beautiful landscape with the premise that the development of the cable steering damper,full-bridge cable on the theoretical analysis and the installation of shock absorber test after the bridge.
引文
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[6]任文敏,王波.杭州湾跨海大桥斜拉索减振效果测试报告[R].北京:清华大学航天航空学院工程力学系,2007.
[2]Takano H,Ogasawara M,Ito N,Shimosato T,Takeda K,Murakami T.Vibrational damper for cables of thetsurumi tsubasa bridge[J].Journal of Wind Engineering andIndustrial Aerodynamics,1997,(69-71):807~818.
[3]J.A.Main and N.P.Jones,Evaluation of viscousdampers for stay-cable vibration mitigation[J].Journal ofBridge Engineering(ASCE).2001,6,(6):385~397.
[4]大崎顺彦(谢礼立等译).振动理论[M].北京:地震出版社,1990.
[5]刘万峰,刘建新,胡兆同.斜拉桥拉索粘性剪切型阻尼器的试验研究[J].西安公路交通大学学报,2000,20(3):41~44.
[6]任文敏,王波.杭州湾跨海大桥斜拉索减振效果测试报告[R].北京:清华大学航天航空学院工程力学系,2007.
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