| Title: |
Field Measurement and Theoretical Analysis of Sidewall Roughness on Shaft Resistance of Rock-Socketed Piles |
| Authors: |
Jun Liu, Zhongwei Li, Guoliang Dai, Weiming Gong |
| Source: |
Journal of Marine Science and Engineering, Vol 11, Iss 8, p 1622 (2023) |
| Publisher Information: |
MDPI AG, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Naval architecture. Shipbuilding. Marine engineering
LCC:Oceanography |
| Subject Terms: |
rock-socketed piles, sidewall roughness, shaft resistance, field load tests, Horvath and Monash models, Naval architecture. Shipbuilding. Marine engineering, VM1-989, Oceanography, GC1-1581 |
| More Details: |
Sidewall roughness is a key factor influencing the shaft resistance of rock-socketed piles. Owing to the difficulties in onsite measuring and the inconsistency in quantitatively characterizing the roughness degree of sidewalls, existing approaches for estimating the shaft resistance of rock-socketed piles often cannot take this factor into account. Based on the measured surface curves of the 68 sockets in No. 6# and 7# group piles of the Chishi Bridge on the Ru-Chen Expressway in China, sidewall roughness is described by introducing the roughness factor (RF) based on the Horvath and Monash models, respectively, while a statistical analysis of the sidewall roughness in rock-socketed sections is also conducted. In addition, an analytical solution to the shaft resistance of rock-socketed piles with consideration of sidewall roughness and the relative settlement of the pile–rocks interface (∆s), is proposed and further compared with the field load tests. The results showed that: the RF obtained by the Horvath model is bigger than that obtained by the Monash model; the larger RF is, the bigger the mobilized shaft resistance; the analytical solution generally overestimates the mobilized shaft resistance of rock-socketed piles under the same ∆s, and the deviation is less than 15% if ∆s is larger than 3.00 mm. The Horvath model is recommended to quantitatively characterize the roughness degree of sidewalls for its good operability in practice. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2077-1312 |
| Relation: |
https://www.mdpi.com/2077-1312/11/8/1622; https://doaj.org/toc/2077-1312 |
| DOI: |
10.3390/jmse11081622 |
| Access URL: |
https://doaj.org/article/e243b0a501f540189b037a31967a80c7 |
| Accession Number: |
edsdoj.243b0a501f540189b037a31967a80c7 |
| Database: |
Directory of Open Access Journals |
