摘要
宁波招宝山大桥是一座跨径较大的独塔斜拉桥 ,结构形式较为复杂。本文介绍了桥梁自振特性的现场测试情况 ,建立了基于实体退化单元的三维有限元分析模型。通过计算和测试结果的比较说明环境随机振动法的适用性和计算分析方法的准确性 。
Zhaobaoshan Bridge in Ningbo is a long-span cable-stayed bridge with single tower and it is very complex in structural style. In this paper, how to measure the vibration characteristics is introduced , and a 3D finite element model based on the degenerated solid elements is established. The applicability of the measurement methods and the accuracy of the analysis can be proved by the comparison between the results of calculation and the results of measurement. And the results also show the dynamic characteristics of Zhaobaoshan Bridge in service meet with the specific requirements.
出处
《公路交通科技》
CAS
CSCD
北大核心
2003年第4期41-43,共3页
Journal of Highway and Transportation Research and Development
关键词
自振特性
实体退化单元
环境振动
斜拉桥
有限元
Vibration characteristics
Degenerated solid elements
Ambient vibration
Cable-stayed bridge
Finite element method
