Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details
Abstract This study assesses improvements in the head and extension sleeve parts for a post-installed anchor. The sleeve and head details were proposed to enhance the structural performance of the post-installed anchor, and the optimal structural shape was determined through finite element analysis....
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | International Journal of Concrete Structures and Materials |
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| Online Access: | https://doi.org/10.1186/s40069-024-00720-w |
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| _version_ | 1849761723550007296 |
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| author | Moo-Won Hur Kyoung-Hun Chae Hyun-Ho Lee Tae-Won Park |
| author_facet | Moo-Won Hur Kyoung-Hun Chae Hyun-Ho Lee Tae-Won Park |
| author_sort | Moo-Won Hur |
| collection | DOAJ |
| description | Abstract This study assesses improvements in the head and extension sleeve parts for a post-installed anchor. The sleeve and head details were proposed to enhance the structural performance of the post-installed anchor, and the optimal structural shape was determined through finite element analysis. The analysis results revealed that the anchor's performance was most efficiently improved when the sleeve length was 9.0 mm and the head length was 3.0 mm. In the model with these dimensions applied, the performance improved approximately 1.71 times compared to the existing model, validating the effectiveness of the proposed structural details. The improved pull-out strength test of anchor diameter M12 showed an increase of 1.25 times in normal-strength concrete and 1.28 times in high-strength concrete, with an embedded depth of 50 mm. The improved pull-out strength test of anchor diameter M16 showed that the pull-out strength increased by 1.42 times for normal-strength concrete and about 1.33 times for high-strength concrete. This research proposes a modified equation that reflects changes in the effective embedded depth and diameter. A comparison of the proposed equation with that of European Technical Approval Guideline (ETAG) showed that the correlation coefficient changed from 0.908 to 0.962, and the coefficient of variation changed from 18.9 to 10.4%, meaning that the proposed equation reflected the actual experimental values more accurately. |
| format | Article |
| id | doaj-art-da0f3269cc0f4f16a20c00ac8b39bb30 |
| institution | DOAJ |
| issn | 2234-1315 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Concrete Structures and Materials |
| spelling | doaj-art-da0f3269cc0f4f16a20c00ac8b39bb302025-08-20T03:05:56ZengSpringerOpenInternational Journal of Concrete Structures and Materials2234-13152025-01-0119111910.1186/s40069-024-00720-wPerformance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header DetailsMoo-Won Hur0Kyoung-Hun Chae1Hyun-Ho Lee2Tae-Won Park3Department of Smart Architecture Engineering, Dongyang UniversityDepartment of Architectural Engineering, Dankook UniversityDepartment of Smart Architecture Engineering, Dongyang UniversityDepartment of Architectural Engineering, Dankook UniversityAbstract This study assesses improvements in the head and extension sleeve parts for a post-installed anchor. The sleeve and head details were proposed to enhance the structural performance of the post-installed anchor, and the optimal structural shape was determined through finite element analysis. The analysis results revealed that the anchor's performance was most efficiently improved when the sleeve length was 9.0 mm and the head length was 3.0 mm. In the model with these dimensions applied, the performance improved approximately 1.71 times compared to the existing model, validating the effectiveness of the proposed structural details. The improved pull-out strength test of anchor diameter M12 showed an increase of 1.25 times in normal-strength concrete and 1.28 times in high-strength concrete, with an embedded depth of 50 mm. The improved pull-out strength test of anchor diameter M16 showed that the pull-out strength increased by 1.42 times for normal-strength concrete and about 1.33 times for high-strength concrete. This research proposes a modified equation that reflects changes in the effective embedded depth and diameter. A comparison of the proposed equation with that of European Technical Approval Guideline (ETAG) showed that the correlation coefficient changed from 0.908 to 0.962, and the coefficient of variation changed from 18.9 to 10.4%, meaning that the proposed equation reflected the actual experimental values more accurately.https://doi.org/10.1186/s40069-024-00720-wConcrete cone failureDesign equationFEM analysisHeader lengthPost-installed anchorShear strength |
| spellingShingle | Moo-Won Hur Kyoung-Hun Chae Hyun-Ho Lee Tae-Won Park Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details International Journal of Concrete Structures and Materials Concrete cone failure Design equation FEM analysis Header length Post-installed anchor Shear strength |
| title | Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details |
| title_full | Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details |
| title_fullStr | Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details |
| title_full_unstemmed | Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details |
| title_short | Performance Evaluation of Torque-Controlled Expansion Anchors with Improved Sleeve and Header Details |
| title_sort | performance evaluation of torque controlled expansion anchors with improved sleeve and header details |
| topic | Concrete cone failure Design equation FEM analysis Header length Post-installed anchor Shear strength |
| url | https://doi.org/10.1186/s40069-024-00720-w |
| work_keys_str_mv | AT moowonhur performanceevaluationoftorquecontrolledexpansionanchorswithimprovedsleeveandheaderdetails AT kyounghunchae performanceevaluationoftorquecontrolledexpansionanchorswithimprovedsleeveandheaderdetails AT hyunholee performanceevaluationoftorquecontrolledexpansionanchorswithimprovedsleeveandheaderdetails AT taewonpark performanceevaluationoftorquecontrolledexpansionanchorswithimprovedsleeveandheaderdetails |