大跨度剛構(gòu)橋懸臂施工狀態(tài)的抗風(fēng)性能研究.pdf

大跨度剛構(gòu)橋懸臂施工狀態(tài)的抗風(fēng)性能研究
以主跨為190 m的預(yù)應(yīng)力混凝土三跨連續(xù)剛構(gòu)橋作為研究對(duì)象,通過(guò)氣彈模型風(fēng)洞試驗(yàn),討論了平行兩
幅迎風(fēng)側(cè)梁與背風(fēng)側(cè)梁的6 分力特性,不同風(fēng)向偏角對(duì)剛構(gòu)橋風(fēng)致響應(yīng)的影響,然后,結(jié)合試驗(yàn)結(jié)果和數(shù)值計(jì)
算,比較分析了橫向連系對(duì)平行兩幅梁風(fēng)致響應(yīng)的抑振作用,分析表明,對(duì)于由平行兩幅箱梁組成的大跨度剛構(gòu)
橋,其懸臂施工時(shí)將兩梁橫向相連對(duì)減少結(jié)構(gòu)的風(fēng)振橫向響應(yīng)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.