Random vibration analysis of long-span structures subjected to spatially varying ground motions |
| |
| Authors: | YH Zhang QS Li JH Lin FW Williams |
| |
| Institution: | 1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China;2. Department of Building and Construction, City University of Hong Kong, Kowloon, Hong Kong;3. Cardiff School of Engineering, Cardiff University, Cardiff CF24 3AA, UK |
| |
| Abstract: | On the basis of the pseudo-excitation method (PEM), a random vibration methodology is formulated for the seismic analysis of multi-supported structures subjected to spatially varying ground motions. The ground motion spatial variability consists of the wave passage, incoherence and site–response effects. Advantages of this method are that less computation effort is required and that the cross-correlations both between normal modes and between excitations are automatically included. Random seismic responses of a realistic long-span bridge due to the wave passage, incoherence and site–response effects are extensively investigated. It is shown that all these effects have significant influence on the seismic response of the structure. |
| |
| Keywords: | Random vibration Earthquake Wave passage effect Incoherence effect Site&ndash response effect |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
