Applicability of Research on Single-Pile Composite Foundation Load Test for High-Rise Buildings

DOI

10.2991/978-94-6463-372-6_2How to use a DOI?

Keywords

Plain concrete Composite foundation; Load test; Bearing capacity; Settlement

Abstract

Plain concrete pile composite foundations in loess areas predominantly rely on single-pile composite foundation load tests to determine bearing capacity. Despite high-rise buildings’ composite foundations meeting the design criteria for bearing capacity through load testing, they still exhibit considerable settlements post-construction. This study aims to investigate the suitability of determining the bearing capacity of high-rise buildings’ composite foundations through load testing. Employing the finite element method, the settlement development characteristics of single-pile and group-pile composite foundations under high-rise building conditions are calculated and compared. Results indicate that under high-rise building conditions, the settlement of the composite foundation is significantly greater than that of the single-pile composite foundation. Furthermore, the settlement difference between single-pile and group-pile composite foundations increases with more substantial pile separation and lower pile length and diameter. Based on settling discrepancies, a reliability index is established to describe the characteristic values of the bearing capacity of single-pile composite foundations. The analysis reveals a risk of unreliability in the load test of the single-pile composite foundation, and there is a high probability of experiencing significant settlement if the composite foundation of high-rise buildings adopts the bearing capacity characteristic value of that test.

Copyright

© 2024 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.

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TY  - CONF
AU  - Liang Zhang
AU  - Tiehang Wang
AU  - Zaikun Zhao
AU  - Jiabin Ruan
PY  - 2024
DA  - 2024/02/12
TI  - Applicability of Research on Single-Pile Composite Foundation Load Test for High-Rise Buildings
BT  - Proceedings of the 2023 5th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2023)
PB  - Atlantis Press
SP  - 4
EP  - 12
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-372-6_2
DO  - 10.2991/978-94-6463-372-6_2
ID  - Zhang2024
ER  -