高墩大跨连续刚构桥气弹模型风洞试验研究  

Wind Tunnel Test for Large-span Continuous Rigid Frame Bridge with High Piers Based on Aeroelastic Model

作　　者：高斐[1] 冯文焕[1] 

机构地区：[1]长安大学公路学院,陕西西安710064

出　　处：《现代交通技术》2012年第5期33-37,共5页Modern Transportation Technology

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.

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 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]