Simplified Solutions for a Pier in a Two-Layered System and subjected to Lateral and Moment Loadings

DOI

10.2991/978-94-6463-900-1_31How to use a DOI?

Keywords

Simplified approach; Equivalent pier method; Lateral and Moment loadings

Abstract

In the preliminary design of single piers, piled foundations, and piled raft foundations, it is often desirable to adopt a simplified approach for the estimation of foundation displacement, rather than immediately resorting to detailed numerical analyses (2D or 3D). Some research has been undertaken on the use of the equivalent pier method for estimating the settlement of a pile group subjected to vertical loading, but there is only limited research was conducted on the application of this method for lateral and moment loadings.

This paper presents the development of an equivalent pier approach on pile groups and piled rafts subjected to lateral and moment loadings. Finite element analyses using RS3 and Plaxis 3D were used to obtain the deflection and rotation of a pier within a two-layer elastic ground profile, for different ratios of pier length to equivalent pier diameter (L/D ratio). These results are presented in terms of simplified expressions for a pier within a uniform soil layer, with modification factors applied to account for a soil stratum of different stiffness below the base of the pier. The results have the potential to provide a quick check on more complex numerical analyses of piers and pile groups subjected to lateral loads.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - Helen S. W. Chow
AU  - Harry G. Poulos
PY  - 2025
DA  - 2025/12/07
TI  - Simplified Solutions for a Pier in a Two-Layered System and subjected to Lateral and Moment Loadings
BT  - Proceedings of the Rocscience International Conference 2025 (RIC 2025)
PB  - Atlantis Press
SP  - 321
EP  - 330
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-900-1_31
DO  - 10.2991/978-94-6463-900-1_31
ID  - Chow2025
ER  -