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| Response analysis of trussed arch structure to bidirectional multiple support excitations |
| Received:June 20, 2010 Revised:December 11, 2010 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201105002 |
| KeyWord:trussed arch multiple support excitations coherency loss function response spectrum wave passage effect |
| Author | Institution |
| 白凤龙 |
大连理工大学 海岸和近海工程国家重点实验室,大连 ;大连市建筑科学研究设计院 结构所,大连 |
| 李宏男 |
大连理工大学 海岸和近海工程国家重点实验室,大连 |
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| Abstract: |
| The spatially varying ground motions were simulated based on an empirical coherency loss function and the response spectrum defined in Chinese seismic design code. Intensive numerical calculations of the responses of the trussed arch subjected to the combined spatially varying horizontal and vertical ground motion excitations were carried out. Compared with structural responses calculated using uniform excitations, numerical results have highlighted that seismic response is amplified when considering ground motion spatial variations. Each factor of ground motion spatial variations has a significant effect on the dynamic response of the structure. The conventional seismic analysis with uniform ground motion assumption or with spatial variations considering wave passage effect only may underestimate the seismic response of long span structure. Numerical results also indicate that considering simultaneous vertical and horizontal ground motions will lead to more accurate response predictions of the trussed arch as compared with those obtained by considering horizontal excitations only. |