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Paper
Title

Time Effects on the Axial Compression Bearing Capacity of Piles Driven in Offshore Clays of Persian Gulf – A Case Study

Year: 1397
COI: GEOTEC03_122
Language: EnglishView: 234
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Authors

Amir Hossein Shamshirgaran - Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran
Babak Ebrahimian - Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran

Abstract:

Nowadays, CPT based methods are vastly employed for predicting the bearing capacity of offshore piles. Previous experiences have shown that the pile capacity is time-dependent (setup and relaxation). Time effect on pile bearing capacity is extremely important which is missing in most CPT based prediction methods. Thus, the main objectives of this paper are: (1) comparing the pile capacity results of some popular CPT based methods with those obtained from Pile Dynamic Analyzer (PDA) and Case Pile Wave Analysis Program (CAPWAP) at End-Of-Drive (EOD) and Beginning -Of-Restrike (BOR) conditions periodically up to 9 months during pile installation; and (2) comparing the predictions of the most accurate CPT based methods to the Skov and Denver (1988) equation which has a semi-logarithmic time function form. For verification purposes, the critical focus of this study has been on employing the invaluable and very rare results of a test pile driven in offshore clays of South Pars field - Persian Gulf, Iran. The field results show that almost all CPT based methods estimate the pile capacity higher than those of EOD condition. However, they are generally close to the results of BOR condition as well as the Skov and Denver (1988) equation with 100-day time reference. In addition, comparing to the long-term predictions of CPT based methods, the set-up factor values proposed by NGI (2000) equation are the most precise ones against the CAPWAP results

Keywords:

Offshore piles, Axial bearing capacity, CPT based methods, PDA test, Soil set-up

Paper COI Code

This Paper COI Code is GEOTEC03_122. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/907792/

How to Cite to This Paper:

If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Shamshirgaran, Amir Hossein and Ebrahimian, Babak,1397,Time Effects on the Axial Compression Bearing Capacity of Piles Driven in Offshore Clays of Persian Gulf – A Case Study,3rd Iranian Conference on Geotechnical Engineering,Tehran,,,https://civilica.com/doc/907792

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Type of center: دانشگاه دولتی
Paper count: 19,335
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