摘要
美国新泽西州的一座四跨简支梁桥被选为Benchmark模型,作为国际旧桥性能研究和评估的新平台,国际上近十多所知名高校和测试咨询检测机构对该桥进行了系统的结构静动力试验及无损检测研究。该文简要介绍了该桥的选择过程和项目的基本情况,对该桥的南侧第2跨静动力试验结果进行了介绍。动力试验采用多参考点脉冲锤击法以得到结构的动力模态柔度,静载试验利用卡车进行加载,对比模态柔度下的弯沉与静载试验下的弯沉显示该方法能为结构损伤识别提供有效的决策支持。
A 4-span simply-supported beam bridge in New Jersey is selected as a benchmark model, as a new platform for international old bridge performance evaluation and study. More than ten well-known universities and counsulting firms took part in this project and conducted the static test, dynamic test and non-destructive test on this bridge. This paper simply introduces the bridge selection process and the general situation of the project. The static and dynamic test results of the southbound second span of the bridge are presented. Multiple reference impact test is performed to capture dynamic modal flexibility, and the static test is conducted with the dump trucks. The comparison of the deflection using modal flexibility and which from the static load shows this method can provide effective decision support for structural damage identification.
出处
《工程力学》
EI
CSCD
北大核心
2013年第B06期25-29,共5页
Engineering Mechanics
基金
国家自然科学基金青年基金项目(51208190)
湖南省自然科学基金青年基金项目(12JJ4053)
高校博士点基金新教师基金项目(20120161120028)
湖南大学青年教师高校基本业务费项目
关键词
结构识别
基准模型
脉冲锤击试验
静载试验
模态柔度
structural identification
benchmark model
hammer impact test
static test
modal flexibility
