Abstract
Topography effects on the vertical vibration responses of pile group are revealed though numerical analysis and model tests. First, a series of model tests with different topography of ground and bedrock are conducted. The results indicate that displacement amplitude of the pile head in sloping ground topography is larger than in horizontal ground. Differential displacement at various positions of the pile cap is observed in non-horizontal topography. Afterwards, a numerical algorithm is employed to further explore the essential response characteristics in group piles of different topography configurations, which has been verified by the test results. The lengths of the exposed and frictional segment, together with the thickness of the subsoil layer, are the dominant factors which cause non-axisymmetric vibration at the pile cap.
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Acknowledgement
This work was supported by the National Science Foundation of China (51622803, 51778092), Innovation Group Science Foundation of the Natural Science Foundation of Chongqing, China under Grant No. cstc2020jcyj-cxttX0003, and China Scholarship Council (File No.: 201806050121) for financial support to visit Purdue University.
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National Science Foundation of China under Grant Nos. 51622803 and 51778092, Innovation Group Science Foundation of the Natural Science Foundation of Chongqing, China under Grant No. cstc2020jcyj-cxttX0003, and China Scholarship Council (File No: 201806050121) for financial support to visit Purdue University
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Liming, Q., Xuanming, D., Changjie, Z. et al. Numerical and test study on vertical vibration characteristics of pile group in slope soil topography. Earthq. Eng. Eng. Vib. 20, 377–390 (2021). https://doi.org/10.1007/s11803-021-2026-7
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DOI: https://doi.org/10.1007/s11803-021-2026-7