Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment
The conventional surface treatments on stainless steel plates yield slip factors less than the required value for a friction grip, which hinders the application of stainless steel high-strength bolts. The slip factor and the treatment process of stainless steel surfaces are not clearly specified in...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/16/5672 |
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| author | Tianxiong Zhang Yidu Bu Yuanqing Wang Zhihua Chen Wei He |
| author_facet | Tianxiong Zhang Yidu Bu Yuanqing Wang Zhihua Chen Wei He |
| author_sort | Tianxiong Zhang |
| collection | DOAJ |
| description | The conventional surface treatments on stainless steel plates yield slip factors less than the required value for a friction grip, which hinders the application of stainless steel high-strength bolts. The slip factor and the treatment process of stainless steel surfaces are not clearly specified in most of the existing design codes. Existing studies also show different slip factors from similarly treated surfaces. In this paper, a new surface treatment is proposed: the two touching surfaces of the bolted connection are grit-blasted on one side and coated with high-velocity oxygen fuel (HVOF) on the other side. The slip behaviour of the new method was compared with four conventional methods. The roughness and hardness of different surfaces were measured prior to a total of 30 slip tests where the slip factors of multiple stainless steel surfaces were tested. It was shown that the new proposed surface treatment method can yield a slip factor of 0.61, much higher than the conventional surface treatments, meeting the requirements as a slip-resistant connection. The preload relaxation of stainless steel high-strength bolts was also monitored and compared to standard grade 10.9 high-strength bolts. We found that the preload relaxation in stainless steel high-strength bolts is negligible. |
| first_indexed | 2024-03-09T04:10:13Z |
| format | Article |
| id | doaj.art-f91d60eb090c4b34b687512c671bd324 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T04:10:13Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-f91d60eb090c4b34b687512c671bd3242023-12-03T14:02:03ZengMDPI AGMaterials1996-19442022-08-011516567210.3390/ma15165672Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface TreatmentTianxiong Zhang0Yidu Bu1Yuanqing Wang2Zhihua Chen3Wei He4School of Civil Engineering, Tianjin University, Tianjin 300072, ChinaDepartment of Civil Engineering, Beijing University of Technology, Beijing 100124, ChinaSchool of Civil Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaThe Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaThe conventional surface treatments on stainless steel plates yield slip factors less than the required value for a friction grip, which hinders the application of stainless steel high-strength bolts. The slip factor and the treatment process of stainless steel surfaces are not clearly specified in most of the existing design codes. Existing studies also show different slip factors from similarly treated surfaces. In this paper, a new surface treatment is proposed: the two touching surfaces of the bolted connection are grit-blasted on one side and coated with high-velocity oxygen fuel (HVOF) on the other side. The slip behaviour of the new method was compared with four conventional methods. The roughness and hardness of different surfaces were measured prior to a total of 30 slip tests where the slip factors of multiple stainless steel surfaces were tested. It was shown that the new proposed surface treatment method can yield a slip factor of 0.61, much higher than the conventional surface treatments, meeting the requirements as a slip-resistant connection. The preload relaxation of stainless steel high-strength bolts was also monitored and compared to standard grade 10.9 high-strength bolts. We found that the preload relaxation in stainless steel high-strength bolts is negligible.https://www.mdpi.com/1996-1944/15/16/5672stainless steel high-strength bolted connectionfaying surface treatment methodslip factorpreloadtest |
| spellingShingle | Tianxiong Zhang Yidu Bu Yuanqing Wang Zhihua Chen Wei He Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment Materials stainless steel high-strength bolted connection faying surface treatment method slip factor preload test |
| title | Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment |
| title_full | Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment |
| title_fullStr | Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment |
| title_full_unstemmed | Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment |
| title_short | Experimental Study on the Slip Behaviour of Stainless Steel High-Strength Bolted Connections with a New Surface Treatment |
| title_sort | experimental study on the slip behaviour of stainless steel high strength bolted connections with a new surface treatment |
| topic | stainless steel high-strength bolted connection faying surface treatment method slip factor preload test |
| url | https://www.mdpi.com/1996-1944/15/16/5672 |
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