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

最小化 最大化

Vol18 No.9: 2460-2474

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

Author】WANG Zhi-jia1; FANGang2,3*; CAO Li-cong4; CHANGJin-yuan5

Addresses】1 School of Civil Engineering and Architecture, Hainan University, Haikou 570228, China; 2 College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China; 3 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China; 4 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 5 CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China

Corresponding author】FAN Gang

Citation】Wang ZJ, Fan G, Cao LC, et al. (2021) An isolated similarity design method for shaking table tests on reinforced slopes. Journal of Mountain Science 18(9). https://doi.org/10.1007/s11629-020-6398-3

DOI】https://doi.org/10.1007/s11629-020-6398-3

Abstract】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, densityρ 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.

Keywords】Similarity design; Shaking table test; Slope; Acceleration; Axial force