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- Title
基于单振动台的桥梁非一致激励试验.
- Authors
吴 多; 刘来君; 李青宁; 张 夏; 薛成凤
- Abstract
To investigate the dynamic response of bridges under non-uniform excitation, a 1/20 reduced-scale continuous beam bridge was designed and fabricated. The seismic simulation shaking table test with non-uniform excitation input was carried out. The extension table was set for the single small vibration table, and the table input excitation was changed to improve the shaking table equipment. The El-Centro and Taft waves suitable for the class Ⅱ field were selected, and the macroscopic failure modes and the time history displacement curve of main parts were analyzed under different seismic intensities. The experimental results show that the bridge damage is increased with the increasing of seismic intensity, and the difference of seismic excitation input between original table and extended table becomes obvious after improving the shaking table equipment. The improved equipment can be used for non-uniform seismic excitation shaking table test of large span bridge structure, and the dynamic response of bridges under seismic effect can also be obtained.
- Subjects
BRIDGE design &; construction; SHAKING table tests; EARTHQUAKE intensity; NON-uniform motion; BRIDGE testing
- Publication
Journal of Jiangsu University (Natural Science Edition) / Jiangsu Daxue Xuebao (Ziran Kexue Ban), 2017, Vol 38, Issue 6, p703
- ISSN
1671-7775
- Publication type
Article
- DOI
10.3969/j.issn.1671-7775.2017.06.014