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Development of a coupled pile-to-pile interaction model for the dynamic analysis of pile groups subjected to vertical loads

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Abstract

This paper presents a new analytical model for calculating the dynamic performance of pile groups subjected to vertical loads. The derived solution allows considering the robust pile-to-pile coupled interaction on impedance of the pile group, by accounting for the secondary waves generated by the vibration of the receiver pile. For that, we introduce a dynamic coupling factor to modify the classical pile-to-pile interaction factor to illustrating the coupling effect of the source and receiver pile. Numerical results obtained for typical problem parameters indicate that this coupling effect can be important for closely spaced pile group, pile groups with large slenderness ratio or pile groups with large group members. The proposed solution is capable of determining the frequency-dependent impedance of large pile groups comprising arbitrary numbers of piles, which numerical modelling can be cumbersome.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Numbers 51622803, 51708064 and 51878103) and the Science and Technology Research and Development Plan of China Railway Corporation (Grant Number 2017G008-H).

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Authors and Affiliations

  1. Key Laboratory of New Technology for Construction of Cities in Mountain Area, College of Civil Engineering, Chongqing University, 83 Shapingba North Street, Chongqing, 400045, China

    Lubao Luan, Xuanming Ding, Guangwei Cao & Xin Deng

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  1. Lubao Luan
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  2. Xuanming Ding
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  3. Guangwei Cao
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  4. Xin Deng
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Correspondence to Xuanming Ding.

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Luan, L., Ding, X., Cao, G. et al. Development of a coupled pile-to-pile interaction model for the dynamic analysis of pile groups subjected to vertical loads. Acta Geotech. 15, 3261–3269 (2020). https://doi.org/10.1007/s11440-020-00972-2

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  • DOI: https://doi.org/10.1007/s11440-020-00972-2

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