The mechanical performance of concrete shear key for prefabricated structures
The mechanical performance of concrete connection plays an important role in the response of precast concrete structures. Unlike conventional small concrete shear key which is mainly to help with alignment at installation, large concrete shear keys have been often designed in recent engineering prac...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
SAGE PUBLICATIONS INC
2021
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/91735 |
| _version_ | 1848765582366736384 |
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| author | Zhang, Xihong Hao, Hong Zheng, J. Hernandez, F. |
| author_facet | Zhang, Xihong Hao, Hong Zheng, J. Hernandez, F. |
| author_sort | Zhang, Xihong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The mechanical performance of concrete connection plays an important role in the response of precast concrete structures. Unlike conventional small concrete shear key which is mainly to help with alignment at installation, large concrete shear keys have been often designed in recent engineering practice to improve joint shear resistance. However, the mechanical properties of large concrete shear keys have not been properly studied. This paper utilizes experimental and numerical methods to investigate both direct shear and flexural bending properties of shear keys. Four types of shear keys comprised of trapezoidal shape, semi-spherical shape, dome shape and wave shape are investigated, which are found to strongly influence the mechanical properties of the keyed joint. Laboratory shear test found unlike conventional shear key, with increased tenon size failure moves to concrete mortise. A detailed numerical model is built to help understand stress developed at the key joint. Flexural bending tests are carried out to evaluate the flexural bending properties of these key joints. Through comparing with theoretical derivation for plain flat joint, similar bending moment resistances from the keyed joints are measured with that of plain flat joint, but larger rotation angles are recorded probably because more damages at the key joint. Among the four different joint patterns, shear key with smoothed pattern could effectively relief concrete damages. |
| first_indexed | 2025-11-14T11:37:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-91735 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:32Z |
| publishDate | 2021 |
| publisher | SAGE PUBLICATIONS INC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-917352023-06-16T05:42:05Z The mechanical performance of concrete shear key for prefabricated structures Zhang, Xihong Hao, Hong Zheng, J. Hernandez, F. Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering concrete shear key direct shear flexural bending BEHAVIOR FAILURE JOINTS The mechanical performance of concrete connection plays an important role in the response of precast concrete structures. Unlike conventional small concrete shear key which is mainly to help with alignment at installation, large concrete shear keys have been often designed in recent engineering practice to improve joint shear resistance. However, the mechanical properties of large concrete shear keys have not been properly studied. This paper utilizes experimental and numerical methods to investigate both direct shear and flexural bending properties of shear keys. Four types of shear keys comprised of trapezoidal shape, semi-spherical shape, dome shape and wave shape are investigated, which are found to strongly influence the mechanical properties of the keyed joint. Laboratory shear test found unlike conventional shear key, with increased tenon size failure moves to concrete mortise. A detailed numerical model is built to help understand stress developed at the key joint. Flexural bending tests are carried out to evaluate the flexural bending properties of these key joints. Through comparing with theoretical derivation for plain flat joint, similar bending moment resistances from the keyed joints are measured with that of plain flat joint, but larger rotation angles are recorded probably because more damages at the key joint. Among the four different joint patterns, shear key with smoothed pattern could effectively relief concrete damages. 2021 Journal Article http://hdl.handle.net/20.500.11937/91735 10.1177/1369433220950618 English SAGE PUBLICATIONS INC unknown |
| spellingShingle | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering concrete shear key direct shear flexural bending BEHAVIOR FAILURE JOINTS Zhang, Xihong Hao, Hong Zheng, J. Hernandez, F. The mechanical performance of concrete shear key for prefabricated structures |
| title | The mechanical performance of concrete shear key for prefabricated structures |
| title_full | The mechanical performance of concrete shear key for prefabricated structures |
| title_fullStr | The mechanical performance of concrete shear key for prefabricated structures |
| title_full_unstemmed | The mechanical performance of concrete shear key for prefabricated structures |
| title_short | The mechanical performance of concrete shear key for prefabricated structures |
| title_sort | mechanical performance of concrete shear key for prefabricated structures |
| topic | Science & Technology Technology Construction & Building Technology Engineering, Civil Engineering concrete shear key direct shear flexural bending BEHAVIOR FAILURE JOINTS |
| url | http://hdl.handle.net/20.500.11937/91735 |