大连理工大学学报
大連理工大學學報
대련리공대학학보
JOURNAL OF DALIAN UNIVERSITY OF TECHNOLOGY
2010年
2期
208-214
,共7页
陈国芳%张哲%吴宏业%谭岩斌
陳國芳%張哲%吳宏業%譚巖斌
진국방%장철%오굉업%담암빈
自锚式%斜拉-悬吊协作体系桥%拉索分段%附加攻角
自錨式%斜拉-懸弔協作體繫橋%拉索分段%附加攻角
자묘식%사랍-현조협작체계교%랍색분단%부가공각
self-anchored%cable-stayed-suspension bridges%cable segmentation%additional attack
自锚武斜拉-悬吊协作体系是一种新型桥梁结构形式,存在着抗风稳定性等技术难题.采用计算缆索承重桥静风响应的方法,研究了金州海湾大桥方案桥在静风作用下,主粱初始攻角与附加攻角、桩基础刚度、缆索体系风荷载和拉索分段对主梁和桥塔静风位移的影响.研究结果表明;附加攻角对方案桥的静风位移影响不大;如果不考虑桩基础刚度的影响会严重低估结构的侧向位移;在缆索体系风荷载作用下的侧向位移占总体位移的20%左右.
自錨武斜拉-懸弔協作體繫是一種新型橋樑結構形式,存在著抗風穩定性等技術難題.採用計算纜索承重橋靜風響應的方法,研究瞭金州海灣大橋方案橋在靜風作用下,主粱初始攻角與附加攻角、樁基礎剛度、纜索體繫風荷載和拉索分段對主樑和橋塔靜風位移的影響.研究結果錶明;附加攻角對方案橋的靜風位移影響不大;如果不攷慮樁基礎剛度的影響會嚴重低估結構的側嚮位移;在纜索體繫風荷載作用下的側嚮位移佔總體位移的20%左右.
자묘무사랍-현조협작체계시일충신형교량결구형식,존재착항풍은정성등기술난제.채용계산람색승중교정풍향응적방법,연구료금주해만대교방안교재정풍작용하,주량초시공각여부가공각、장기출강도、람색체계풍하재화랍색분단대주량화교탑정풍위이적영향.연구결과표명;부가공각대방안교적정풍위이영향불대;여과불고필장기출강도적영향회엄중저고결구적측향위이;재람색체계풍하재작용하적측향위이점총체위이적20%좌우.
A self-anchored cable-stayed-suspension bridge is a new type of structure bridge. There are some technical problems, such as wind resisting stability and so on. Detailed study is done on the influence of pile foundation rigidity, wind load of cables, cables segmentation, initial and additional attack angle on main girder and pylon displacement of the Jinzhou Gulf Bridge under the static wind condition by calculating the aerostatic response of cable supported bridge. The results show that the additional attack angle has little influence on the displacement induced by static wind of the bridge. If the pile foundation rigidity effect is not taken into account, the lateral displacement will be severely underestimated. The lateral displacement due to the wind load of cables is almost 20 percent of that of the total wind load.