Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests
As part of a large converter project in Shandong Province, vertical static load tests and internal force tests were conducted on three large-diameter rock-socketed piles, their load transfer mechanism was clarified, and the ultimate side resistance and ultimate resistance performance characteristics...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6075607 |
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| _version_ | 1832547793661591552 |
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| author | Xueying Liu Xiaoyu Bai Mingyi Zhang Yonghong Wang Songkui Sang Nan Yan |
| author_facet | Xueying Liu Xiaoyu Bai Mingyi Zhang Yonghong Wang Songkui Sang Nan Yan |
| author_sort | Xueying Liu |
| collection | DOAJ |
| description | As part of a large converter project in Shandong Province, vertical static load tests and internal force tests were conducted on three large-diameter rock-socketed piles, their load transfer mechanism was clarified, and the ultimate side resistance and ultimate resistance performance characteristics of the rock-socketed sections were analyzed. The test results showed that the three test piles were damaged under maximum loading, the Q-s curve exhibited a steep drop, the pile compression was around 1.2 times the pile diameter, and the bearing capacity of a single pile did not meet the design requirements. The side and end resistances of the three test piles all reached their ultimate values, but the ultimate side resistance was lower than the lower limit of the recommended value in the current technical code for building pile foundations. The end resistance under maximum loading accounted for 38.4–53.8% of the peak load, which was relatively high. By comparing it with other studies, there was no significant correlation between the coefficient of rock ultimate side resistance of the rock-socketed segment and the pile diameter of the rock-socketed segment. However, the coefficient of ultimate resistance increased gradually with the pile diameter. However, the latter correlation was not significant when the pile diameter was less than 1000 mm. |
| format | Article |
| id | doaj-art-998e94294c7e43bda5b869a2bd92e991 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-998e94294c7e43bda5b869a2bd92e9912025-02-03T06:43:27ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/60756076075607Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load TestsXueying Liu0Xiaoyu Bai1Mingyi Zhang2Yonghong Wang3Songkui Sang4Nan Yan5School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao 266033, ChinaAs part of a large converter project in Shandong Province, vertical static load tests and internal force tests were conducted on three large-diameter rock-socketed piles, their load transfer mechanism was clarified, and the ultimate side resistance and ultimate resistance performance characteristics of the rock-socketed sections were analyzed. The test results showed that the three test piles were damaged under maximum loading, the Q-s curve exhibited a steep drop, the pile compression was around 1.2 times the pile diameter, and the bearing capacity of a single pile did not meet the design requirements. The side and end resistances of the three test piles all reached their ultimate values, but the ultimate side resistance was lower than the lower limit of the recommended value in the current technical code for building pile foundations. The end resistance under maximum loading accounted for 38.4–53.8% of the peak load, which was relatively high. By comparing it with other studies, there was no significant correlation between the coefficient of rock ultimate side resistance of the rock-socketed segment and the pile diameter of the rock-socketed segment. However, the coefficient of ultimate resistance increased gradually with the pile diameter. However, the latter correlation was not significant when the pile diameter was less than 1000 mm.http://dx.doi.org/10.1155/2020/6075607 |
| spellingShingle | Xueying Liu Xiaoyu Bai Mingyi Zhang Yonghong Wang Songkui Sang Nan Yan Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests Advances in Materials Science and Engineering |
| title | Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests |
| title_full | Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests |
| title_fullStr | Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests |
| title_full_unstemmed | Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests |
| title_short | Load-Bearing Characteristics of Large-Diameter Rock-Socketed Piles Based on Ultimate Load Tests |
| title_sort | load bearing characteristics of large diameter rock socketed piles based on ultimate load tests |
| url | http://dx.doi.org/10.1155/2020/6075607 |
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