现代交通技术
現代交通技術
현대교통기술
XIANDAI JIAOTONG JISHU
2012年
5期
33-37
,共5页
桥梁工程%抗风性能%气弹模型%风洞试验%高墩大跨%施工状态
橋樑工程%抗風性能%氣彈模型%風洞試驗%高墩大跨%施工狀態
교량공정%항풍성능%기탄모형%풍동시험%고돈대과%시공상태
bridge engineering%wind-resistant behavior%aeroelastic model%wind tunnel test%high pier and large-span%construction state
高墩大跨连续刚构桥在施工阶段的抗风能力较弱，以三水河特大桥为工程背景，通过最大悬臂施工状态气弹模型的风洞试验，对其抗风性能就行了研究。采用1：100的缩尺模型比进行最大悬臂施工状态的颤振及驰振试验，测定颤振、驰振临界风速，据此分析评估该桥的抗风性能。风洞试验结果表明，该桥具有较好的颤振、驰振稳定性。
高墩大跨連續剛構橋在施工階段的抗風能力較弱，以三水河特大橋為工程揹景，通過最大懸臂施工狀態氣彈模型的風洞試驗，對其抗風性能就行瞭研究。採用1：100的縮呎模型比進行最大懸臂施工狀態的顫振及馳振試驗，測定顫振、馳振臨界風速，據此分析評估該橋的抗風性能。風洞試驗結果錶明，該橋具有較好的顫振、馳振穩定性。
고돈대과련속강구교재시공계단적항풍능력교약，이삼수하특대교위공정배경，통과최대현비시공상태기탄모형적풍동시험，대기항풍성능취행료연구。채용1：100적축척모형비진행최대현비시공상태적전진급치진시험，측정전진、치진림계풍속，거차분석평고해교적항풍성능。풍동시험결과표명，해교구유교호적전진、치진은정성。
The construction state of large-span continuous rigid frame bridge with high piers is the weak link in the wind-resistant. Taking the Sanshuihe bridge as an engineering background,the wind tunnel test for the aeroelastic model of longest double-cantilever construction state were made to analyze the wind-resistant behavior of the bridge. The wind tunnel tests for flutter and galloping of the bridge at the longest double-cantilever construction stage were made by the aeroelastic model with a scale of l:lO0,the critical flutter and galloping wind speed were measured in the tests and the wind-resistant behavior of the bridge was analyzed and assessed based on the results of the tests. The results show that the bridge has fairly good flutter and galloping stability.
