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| Seismic response analysis of secondary system mounted on nonlinear primary structure |
| Received:March 27, 2008 |
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| DOI：10.7511/jslx20103016 |
| KeyWord:primary system non-linearization equivalent linearization secondary system optimal position |
| Author | Institution |
| 国巍 |
中南大学土木建筑学院高速铁路建造技术国家实验室,长沙;大连理工大学 海岸和近海工程国家重点实验室,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 |
| 柳国环 |
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: |
| Based on the code for seismic design of building in China, primary systems usually yield before secondary systems’ destruction under the severe earthquake loading in practice, so the non-linearization characteristic of primary systems usually plays an important role in the dynamic analysis for primary-secondary systems. Owing to this reason, the dynamic response expressions of primary-secondary systems are studied and proposed in this paper, which are based on the theory of random vibration and the equivalent linearization method. Then, the response expressions are used for explain the effect of nonlinearity of primary system on the response of secondary systems, while the response variance is adopted as the analysis index. In the numerical analysis, two simple and generic structures, which is 3-degree of freedom and 10 degree of freedom respectively, are used to study the response properties. Moreover, the optimal position of secondary systems represented by the minimum response variance, and the interaction between multiple secondary systems are also calculated and analyzed. In the end, some valuable conclusions are studied. |
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