摘要
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。
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.
出处
《现代交通技术》
2012年第5期33-37,共5页
Modern Transportation Technology
关键词
桥梁工程
抗风性能
气弹模型
风洞试验
高墩大跨
施工状态
bridge engineering
wind-resistant behavior
aeroelastic model
wind tunnel test
high pier and large-span
construction state
