Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout
To make the bearing capacity tests safer and more affordable for prestressed high-strength concrete (PHC) piles, this paper proposes a reaction device for anchor piles filled with core grout based on the geometric and mechanical characteristics of PHC piles. The proposed reaction device has the adva...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2023-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2023/5552990 |
| _version_ | 1797681981528473600 |
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| author | Xiaosan Yin Jimin Li Guoyang Fu |
| author_facet | Xiaosan Yin Jimin Li Guoyang Fu |
| author_sort | Xiaosan Yin |
| collection | DOAJ |
| description | To make the bearing capacity tests safer and more affordable for prestressed high-strength concrete (PHC) piles, this paper proposes a reaction device for anchor piles filled with core grout based on the geometric and mechanical characteristics of PHC piles. The proposed reaction device has the advantages of convenient construction, strong controllability of the connection quality and low cost. In addition, the pile will not experience prestress unloading or tensile stress under the effect of the upward pulling load. To promote the application of the reaction device developed for PHC pile bearing capacity tests, experimental studies are conducted on the bonding performance between the core grout and the inner wall of the PHC pile. The influence of various factors such as the strength of the core grout, the grouting length, the curing time, and the inner diameter of the PHC pile on the bond strength between the core grout and the inner wall of the PHC pile are investigated. Results show that as the inner diameter of the PHC pile increases, the bond strength between the core grout and the inner wall of the PHC pile decreases with a maximum difference of 5%. The bond strength decreases as the grouting length increases, and gradually stabilizes, with a difference of no more than 10% between the maximum and minimum bond strength values. The higher the strength of the grout is, the greater the bond strength between the core grout and the inner wall of the PHC pile is. The bond strength between the core grout and the inner wall of the PHC pile increases with the increase of the curing time within 28 days of curing, and the bond strength at 3 days meets the requirements of the PHC pile bearing capacity test. |
| first_indexed | 2024-03-11T23:52:55Z |
| format | Article |
| id | doaj.art-30d7970d29e4476fa55e504175730247 |
| institution | Directory Open Access Journal |
| issn | 1687-8094 |
| language | English |
| last_indexed | 2024-03-11T23:52:55Z |
| publishDate | 2023-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj.art-30d7970d29e4476fa55e5041757302472023-09-19T00:00:04ZengHindawi LimitedAdvances in Civil Engineering1687-80942023-01-01202310.1155/2023/5552990Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core GroutXiaosan Yin0Jimin Li1Guoyang Fu2School of Architectural and Civil EngineeringSchool of Architectural and Civil EngineeringFaculty of Science and EngineeringTo make the bearing capacity tests safer and more affordable for prestressed high-strength concrete (PHC) piles, this paper proposes a reaction device for anchor piles filled with core grout based on the geometric and mechanical characteristics of PHC piles. The proposed reaction device has the advantages of convenient construction, strong controllability of the connection quality and low cost. In addition, the pile will not experience prestress unloading or tensile stress under the effect of the upward pulling load. To promote the application of the reaction device developed for PHC pile bearing capacity tests, experimental studies are conducted on the bonding performance between the core grout and the inner wall of the PHC pile. The influence of various factors such as the strength of the core grout, the grouting length, the curing time, and the inner diameter of the PHC pile on the bond strength between the core grout and the inner wall of the PHC pile are investigated. Results show that as the inner diameter of the PHC pile increases, the bond strength between the core grout and the inner wall of the PHC pile decreases with a maximum difference of 5%. The bond strength decreases as the grouting length increases, and gradually stabilizes, with a difference of no more than 10% between the maximum and minimum bond strength values. The higher the strength of the grout is, the greater the bond strength between the core grout and the inner wall of the PHC pile is. The bond strength between the core grout and the inner wall of the PHC pile increases with the increase of the curing time within 28 days of curing, and the bond strength at 3 days meets the requirements of the PHC pile bearing capacity test.http://dx.doi.org/10.1155/2023/5552990 |
| spellingShingle | Xiaosan Yin Jimin Li Guoyang Fu Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout Advances in Civil Engineering |
| title | Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout |
| title_full | Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout |
| title_fullStr | Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout |
| title_full_unstemmed | Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout |
| title_short | Experimental Study on Bonding Performance between Prestressed Concrete Pipe Piles and Core Grout |
| title_sort | experimental study on bonding performance between prestressed concrete pipe piles and core grout |
| url | http://dx.doi.org/10.1155/2023/5552990 |
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