Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs
Corrugated steel web with inherent high out-of-plane stiffness has a promising application in configuring large span highway bridge girders. Due to the irregularity of the configuration details, the local stress concentration poses a major fatigue problem for the welded flange plates of high strengt...
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MDPI AG
2018
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oai:localhost:DHQB_123456789-38082018-10-22T08:44:27Z Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs Zhi-Yu Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Qing-Yuan Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Yong-Jie Liu (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Technology: Electrical engineering. Electronics. Nuclear engineering Technology: Engineering (General). Civil engineering (General) | Science: Natural history (General): Microscopy Science: Physics: Descriptive and experimental mechanics Corrugated steel web with inherent high out-of-plane stiffness has a promising application in configuring large span highway bridge girders. Due to the irregularity of the configuration details, the local stress concentration poses a major fatigue problem for the welded flange plates of high strength low alloy structural steels. In this work, the methods of applying CFRP laminate and shot peening onto the surfaces of the tension flanges were employed with the purpose of improving the fatigue strength of such configuration details. The effectiveness of this method in the improvement of fatigue strength has been examined experimentally. Test results show that the shot peening significantly increases hardness and roughness in contrast to these without treatment. Also, it has beneficial effects on the fatigue strength enhancement when compared against the test data of the joints with CFRP strengthening. The stiffness degradation during the loading progress is compared with each treatment. Incorporating the stress acting on the constituent parts of the CFRP laminates, a discussion is made regarding the mechanism of the retrofit and related influencing factors such as corrosion and economic cost. This work could enhance the understanding of the CFRP and shot peening in repairing such welded details and shed light on the reinforcement design of welded joints between corrugated steel webs and flange plates. 2018-08-22T07:51:20Z 2018-08-22T07:51:20Z 1996 Other http://lrc.quangbinhuni.edu.vn:8181/dspace/handle/DHQB_123456789/3808 en_US MDPI AG |
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Trung tâm Học liệu Đại học Quảng Bình (Dspace) |
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Trung tâm Học liệu Đại học Quảng Bình (Dspace) |
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en_US |
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Technology: Electrical engineering. Electronics. Nuclear engineering Technology: Engineering (General). Civil engineering (General) | Science: Natural history (General): Microscopy Science: Physics: Descriptive and experimental mechanics |
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Technology: Electrical engineering. Electronics. Nuclear engineering Technology: Engineering (General). Civil engineering (General) | Science: Natural history (General): Microscopy Science: Physics: Descriptive and experimental mechanics Zhi-Yu Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Qing-Yuan Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Yong-Jie Liu (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| description |
Corrugated steel web with inherent high out-of-plane stiffness has a promising application in configuring large span highway bridge girders. Due to the irregularity of the configuration details, the local stress concentration poses a major fatigue problem for the welded flange plates of high strength low alloy structural steels. In this work, the methods of applying CFRP laminate and shot peening onto the surfaces of the tension flanges were employed with the purpose of improving the fatigue strength of such configuration details. The effectiveness of this method in the improvement of fatigue strength has been examined experimentally. Test results show that the shot peening significantly increases hardness and roughness in contrast to these without treatment. Also, it has beneficial effects on the fatigue strength enhancement when compared against the test data of the joints with CFRP strengthening. The stiffness degradation during the loading progress is compared with each treatment. Incorporating the stress acting on the constituent parts of the CFRP laminates, a discussion is made regarding the mechanism of the retrofit and related influencing factors such as corrosion and economic cost. This work could enhance the understanding of the CFRP and shot peening in repairing such welded details and shed light on the reinforcement design of welded joints between corrugated steel webs and flange plates. |
| format |
Other |
| author |
Zhi-Yu Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Qing-Yuan Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Yong-Jie Liu (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) |
| author_facet |
Zhi-Yu Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Qing-Yuan Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) Yong-Jie Liu (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) |
| author_sort |
Zhi-Yu Wang (Department of Civil Engineering & Mechanics, Sichuan University, Chengdu 610065, China) |
| title |
Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| title_short |
Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| title_full |
Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| title_fullStr |
Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| title_full_unstemmed |
Evaluation of Fatigue Strength Improvement by CFRP Laminates and Shot Peening onto the Tension Flanges Joining Corrugated SteelWebs |
| title_sort |
evaluation of fatigue strength improvement by cfrp laminates and shot peening onto the tension flanges joining corrugated steelwebs |
| publisher |
MDPI AG |
| publishDate |
2018 |
| url |
http://lrc.quangbinhuni.edu.vn:8181/dspace/handle/DHQB_123456789/3808 |
| _version_ |
1717292447197822976 |
| score |
9,463379 |