大跨度剛構橋懸臂施工狀態(tài)的抗風性能研究.pdf

大跨度剛構橋懸臂施工狀態(tài)的抗風性能研究
以主跨為190 m的預應力混凝土三跨連續(xù)剛構橋作為研究對象,通過氣彈模型風洞試驗,討論了平行兩
幅迎風側梁與背風側梁的6 分力特性,不同風向偏角對剛構橋風致響應的影響,然后,結合試驗結果和數(shù)值計
算,比較分析了橫向連系對平行兩幅梁風致響應的抑振作用,分析表明,對于由平行兩幅箱梁組成的大跨度剛構
橋,其懸臂施工時將兩梁橫向相連對減少結構的風振橫向響應是十分有效而便利的。

The main span of 190 m of prestressed concrete three-span continuous rigid frame bridge as the research object, aeroelastic model wind tunnel test, discussed the two parallel
 Windward side of the beam width and leeward side of the pitch characteristics of the beam 6, the different angle on the rigid frame bridge wind induced response of the wind, and then combined with test results and numerical terms
 Calculation, comparative analysis of two parallel transverse links on the wind-induced response of beam vibration suppression effect, analysis shows that the parallel composition of two box girder span rigid frame
 Bridge, the construction of the two cantilever beams connected to the reduction of horizontal wind induced vibration response is very effective horizontal and convenient.