An isolated similarity design method for shaking table tests on reinforced slopes

Autor: Zhi-jia Wang, Jin-yuan Chang, Gang Fan, Li-cong Cao
Rok vydání: 2021
Předmět:
Zdroj: Journal of Mountain Science. 18:2460-2474
ISSN: 1993-0321
1672-6316
DOI: 10.1007/s11629-020-6398-3
Popis: Physical model test is an effective way to unveil the dynamic response of a slope under seismic condition. The similarity design is the key of physical model test. An isolated similarity design method for shaking table tests was proposed and verified in this work. In this method, the relevant physical quantities were divided into several subsystems and subcharacteristic equations for each subsystem were then established based on the Buckingham similarity theory. Large-scale shaking table tests on a reinforced slope were adopted herein to illustrate the application of the proposed isolated similarity design method. The similarity system for the studied slope was divided into four parts in the process of similarity design. The geometrical dimension L, density ρ and gravity g were selected as fundamental quantities for the similarity design, and four subcharacteristic equations were established for each subsystem. The dynamic responses of the recorded acceleration and axis force show that the seismic waves propagate well in the model slope. The proposed isolated similarity design method solves the conflict between the similarity requirement for all relevant physical quantities and the difficulty of test model fabrication to satisfy all similarity relations.
Databáze: OpenAIRE
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