| Issue |
E3S Web Conf.
Volume 276, 2021
2021 5th International Conference on Water Conservancy, Hydropower and Building Engineering (WCHBE 2021)
|
|
|---|---|---|
| Article Number | 02016 | |
| Number of page(s) | 6 | |
| Section | Research on Building Structure and Construction Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202127602016 | |
| Published online | 23 June 2021 | |
Nonlinear consolidation theory for prefabricated vertical drains with elliptic cylindrical assumption
1 Zhejiang Design Institute of Water Conservancy and Hydroelectric Power, Hangzhou 310002, China
2 Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
* Corresponding author: hcx8311@mail.zdwp.net
Based on the influence of the non-linear change in the consolidation process of permeability coefficient and compressibility of soft soils and the theory of elliptic cylinders, derived the control equation of the nonlinear consolidation of the vertical foundation of the strip plastic drainage board. Further, according to the complete orthogonal space theory, the equivalent polynomial analytical expression of the nonlinear term is given. Then, the analytic solutions of the nonlinear consolidation are given, and through numerical calculation and verification analysis, it is considered that the Indrarantna (2005) approximation has a relatively small error at Cc/Ck (close to 1) and Nu (<4), but when Cc/Ck (difference from 1) and Nu are large (>4), the error is large.
© The Authors, published by EDP Sciences, 2021
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