柔性桥塔结构环境振动测试研究

摘要

6Taking the environmental vibration test on one flexible bridge tower structure as example,the article discusses the general procedure and technical detail of this test and also per-forms recognition analysis on bridge tower dynamic characteristics（vibration model index） by using random sub space identification（SSI）.It shows that the analysis result is almost identical to the theoretical value.%文章以某大桥柔性桥塔结构环境振动测试为例,阐述了桥塔结构环境振动测试的一般步骤和技术细节,并采用时域随机子空间识别方法（SSI）对桥塔动力特性（振动模态参数）进行了识别分析。经验证,识别分析结果与理论计算值能较好吻合。