Research on Seismic Input Method of Layered Ground Foundation
| Autor: | Yafei Zhai, Zhonghui Bi, Binghui Cui |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
General Computer Science
refraction business.industry General Engineering Foundation (engineering) Solid modeling Structural engineering Refraction Seismic wave Seismic analysis Physics::Geophysics equivalent nodal force Vibration Reflection (physics) viscous-spring artificial boundary General Materials Science Input method lcsh:Electrical engineering. Electronics. Nuclear engineering Electrical and Electronic Engineering business lcsh:TK1-9971 Geology Layered foundation reflection |
| Zdroj: | IEEE Access, Vol 9, Pp 54820-54830 (2021) |
| ISSN: | 2169-3536 |
| Popis: | The seismic input of layered foundation is an essential part of seismic analysis of structure- foundation system. Most of the traditional seismic input methods only consider the first reflection process of seismic waves at the interface of different media, ignoring the subsequent reflection and refraction propagation process, which can not truly reflect the wave propagation process in the layered foundation. This paper proposes a new seismic input method for layered foundation, considering all reflected and refracted waves. Firstly, the viscous-spring artificial boundary model of the layered foundation is established, which can simulate the absorption of scattered waves and the elastic recovery capacity of semi-infinite foundation at the same time. Then, based on the wave mechanics theory, the equivalent nodal force calculation formula is derived to realize the vibration input of layered ground. Finally, the calculation results of the layered foundation and two-way surge tower engineering are verified. The results show that: compared to the traditional input method, the method proposed in this paper has a significant influence on the seismic response of layered foundation, and the method in this paper can better meet the accuracy requirements of engineering earthquake resistance, which provides an effective and practical calculation method for seismic analysis of layered foundation structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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