Dynamic stability research by using load/unload ratio method |
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| Authors: | SHI Chong XU Wei-ya ZHOU Jia-wen ZHOU Xian-qi |
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| Institution: | Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | Borrowing the idea of load/unload response theory in seismic prediction, seismic dynamic model is established, in which seismic acceleration on the boundary is regarded as load/unload process and relative displacement, velocity or acceleration is looked upon as response parameters, whole time history analysis is performed by finite element method and load/unload response theory, favourable exploratory of the application in dynamic response prediction is then attained through the above-mentioned theories. The results indicate that relative response parameters are more applicable of describing structure deformation, reflecting the dynamic mechanism of action than absolute displacement. Using Load/unload dynamic response ratio to identify the damage degree under seismic waves turns out to be an effective method reflecting the response degree. |
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| Keywords: | dynamic response load/unload law absolute dynamic response relative dynamic response |
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