Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test
This paper introduces some experimental data measured from 63 impact tests of pre−stressed strand cables. The test specimens consist of seven steel wires that have a length equivalent to 100 times the outside diameter. To ensure consistency with the engineering service status, the strand cables are...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/2/330 |
| _version_ | 1797621985217347584 |
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| author | Zhijie Wu Yuchao Yang Yachao Hu Feng Liu |
| author_facet | Zhijie Wu Yuchao Yang Yachao Hu Feng Liu |
| author_sort | Zhijie Wu |
| collection | DOAJ |
| description | This paper introduces some experimental data measured from 63 impact tests of pre−stressed strand cables. The test specimens consist of seven steel wires that have a length equivalent to 100 times the outside diameter. To ensure consistency with the engineering service status, the strand cables are fully installed in a specially designed device and are axially pre−stretched to 0% to 40% of the ultimate bearing capacity before being subjected to lateral impact. The mass of the indenter is 50.34 kg, and the maximum impact velocity reaches 13 m/s. Two dimensionless variables, axial force and input kinetic energy, are used to control the experimental parameters. The recorded test data show that input energy and pre−stress level are the key factors governing the impact behavior, which is mainly characterized by plastic deformation controlled by the combination of tension and flexure, and the dynamic fracture concentrated in the impact zone is controlled by the joint effects of compression, tension and shear. As the impact energy increases, the dynamic mode of the test specimen changes from elastic rebound to plastic deformation, and finally evolves into fracture of some or all steel wires, which correspond to slight, partial and total loss of pre−tension, respectively. An increase in the level of pre−stress will significantly reduce the critical displacement of the structural failure but has little effect on the critical failure energy. The present paper provides a basic experimental data and mechanical analysis framework for the analysis, design and evaluation of the mechanical behavior of strands under accidental lateral impact. |
| first_indexed | 2024-03-11T09:03:53Z |
| format | Article |
| id | doaj.art-475f607bd17b49f1b1befe40ee85cddf |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T09:03:53Z |
| publishDate | 2023-01-01 |
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| spelling | doaj.art-475f607bd17b49f1b1befe40ee85cddf2023-11-16T19:31:05ZengMDPI AGBuildings2075-53092023-01-0113233010.3390/buildings13020330Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment TestZhijie Wu0Yuchao Yang1Yachao Hu2Feng Liu3Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaShandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, ChinaThis paper introduces some experimental data measured from 63 impact tests of pre−stressed strand cables. The test specimens consist of seven steel wires that have a length equivalent to 100 times the outside diameter. To ensure consistency with the engineering service status, the strand cables are fully installed in a specially designed device and are axially pre−stretched to 0% to 40% of the ultimate bearing capacity before being subjected to lateral impact. The mass of the indenter is 50.34 kg, and the maximum impact velocity reaches 13 m/s. Two dimensionless variables, axial force and input kinetic energy, are used to control the experimental parameters. The recorded test data show that input energy and pre−stress level are the key factors governing the impact behavior, which is mainly characterized by plastic deformation controlled by the combination of tension and flexure, and the dynamic fracture concentrated in the impact zone is controlled by the joint effects of compression, tension and shear. As the impact energy increases, the dynamic mode of the test specimen changes from elastic rebound to plastic deformation, and finally evolves into fracture of some or all steel wires, which correspond to slight, partial and total loss of pre−tension, respectively. An increase in the level of pre−stress will significantly reduce the critical displacement of the structural failure but has little effect on the critical failure energy. The present paper provides a basic experimental data and mechanical analysis framework for the analysis, design and evaluation of the mechanical behavior of strands under accidental lateral impact.https://www.mdpi.com/2075-5309/13/2/330pre−stressed strand cablelow−velocity impact testinelastic deformationfailure patternresponse mechanism |
| spellingShingle | Zhijie Wu Yuchao Yang Yachao Hu Feng Liu Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test Buildings pre−stressed strand cable low−velocity impact test inelastic deformation failure pattern response mechanism |
| title | Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test |
| title_full | Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test |
| title_fullStr | Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test |
| title_full_unstemmed | Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test |
| title_short | Response Characteristics of Pre-Stressed Strand Cables Subjected to Low-Velocity Impact: Experiment Test |
| title_sort | response characteristics of pre stressed strand cables subjected to low velocity impact experiment test |
| topic | pre−stressed strand cable low−velocity impact test inelastic deformation failure pattern response mechanism |
| url | https://www.mdpi.com/2075-5309/13/2/330 |
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