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DETERMINATION OF VERTICAL PILE CAPACITY BASED ON ELASTIC SETTLEMENT
| 题名： | DETERMINATION OF VERTICAL PILE CAPACITY BASED ON ELASTIC SETTLEMENT |
| 正文语种： | eng |
| 作者： | S.K. BAGUI;ATASI DAS;FAIZ ULLAH |
| 作者单位： | CGM ICT Pvt. Ltd. New Delhi;GR Infra Projects Ltd. Gurugram;Oriental Consultants Global Dhaka Bangladesh |
| 摘要： | Vertical capacity of a pile is initially determined based on geotechnical investigation report and confirmed by conducting initial static pile load test and dynamic and routine pile load tests. There are many empirical formulas which are used to confirm the vertical capacity and those formulas vary from country to country. Final settlement is usually considered up-to 10% of pile diameter and adopted by many countries. When a top-down load is applied, the load is resisted by skin friction and end bearing and settlement to some extent occurs in the pile and surrounding soil. Elastic settlement in pile occurs during pile load test which can be determined by cyclic load testing or unloading the load. Therefore, elastic settlement in a pile is an important parameter which shall not be overlooked. Pile capacity can be determined in consideration of elastic settlement with a suitable factor of safety. This paper presents a methodology based on 20 initial pile load test results and one routine pile load test result. Elastic settlements of 6 mm and 6.5 mm for initial pile load test mm are considered for initial static pile load test to determine the ultimate pile capacity. A factor of safety of 2.0 can be applied to obtain design pile capacity for initial pile load tests conducted by static method considering elastic settlement of 6 mm. It is observed that proposed methods give better results within permissible design value with standard deviation of 0.172 and coefficient of variation 0.083. |
| 出版年： | 2023 |
| 期刊名称： | Indian Highways |
| 卷： | 51 |
| 期： | 5 |
| 页码： | 36-42 |
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