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首页> 外文期刊>Experimental Techniques >Cable tensioning control and modal identification of a circular cable-stayed footbridge: Dynamic testing of civil engineering structures series
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Cable tensioning control and modal identification of a circular cable-stayed footbridge: Dynamic testing of civil engineering structures series

机译：圆形斜拉人行桥的电缆张紧控制和模态识别：土木工程结构的动态测试系列

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The modal identification and vibration measurements and finite element (FE) modeling of circular cable-stayed footbridge located in Aveiro, Portugal has been discussed. The vibration measurements on the bridge were planned aiming to ensure the correct installation of axial forces in the cables, to characterize the dynamic behavior of the bridge, and to obtain the response acceleration when groups of synchronized pedestrians cross the bridge. The data acquisition was performed using five roving and three reference accelerometers, including one reference vertical accelerometer at the top of the mast. The planned structural behavior of the bridge deck depends on the correct tension forces installed in the cables. The modal identification was based on the techniques of modal extraction in the frequency and time domain implemented in ARTeMIS software. The vertical acceleration induced by the ambient excitation mainly because of wind was measured on the bridge deck and on the top of the mast.
机译：讨论了位于葡萄牙阿威罗的圆形斜拉人行天桥的模态识别，振动测量和有限元（FE）建模。计划在桥梁上进行振动测量，旨在确保在电缆中正确安装轴向力，表征桥梁的动态行为，并在成群的同步行人越过桥梁时获得响应加速度。数据采集​​使用五个粗纱和三个参考加速度计进行，包括桅杆顶部的一个参考垂直加速度计。桥面板的计划结构行为取决于安装在电缆中的正确拉力。模态识别基于ARTeMIS软件中实现的频域和时域模态提取技术。主要由风引起的环境激励引起的垂直加速度是在桥面板和桅杆顶部测量的。

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