A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam
We propose a novel representative power spectrum density as a specific characteristic for showing responses of spans during a long operational period. The idea behind this method is to use the representative power spectrum density as a powerful tool to evaluate the stiffness decline of spans during...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/1547568 |
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| _version_ | 1832552601131941888 |
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| author | Thanh Q. Nguyen Thao D. Nguyen Lam Q. Tran Nhi K. Ngo |
| author_facet | Thanh Q. Nguyen Thao D. Nguyen Lam Q. Tran Nhi K. Ngo |
| author_sort | Thanh Q. Nguyen |
| collection | DOAJ |
| description | We propose a novel representative power spectrum density as a specific characteristic for showing responses of spans during a long operational period. The idea behind this method is to use the representative power spectrum density as a powerful tool to evaluate the stiffness decline of spans during their operation period. In addition, a new measurement method has been introduced to replace the traditional method of monitoring the health conditions of bridges through a periodic measurement technique. This helps to reduce costs when carrying out testing bridges. Besides, the proposed approach can be widely applied not only in Vietnam but also in many other underprivileged countries around the world. Obtained results show that, during the operational process of spans, there is not only a pure vibration evaluation such as bending vibration and torsion vibration tests but also a combination of various vibration types including bending-torsion vibration or high-level vibrations like first-mode bending and first-mode torsion. Depending on each type of structure and material properties, different types of vibrations will appear more or less during the operational process of spans under a random moving load. Furthermore, the representative power spectrum density is also suitable for evaluating and determining many different fundamental vibrations through the same measurement time as well as various measurement times. |
| format | Article |
| id | doaj-art-e33b1b16515f41308285f8f221474c01 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-e33b1b16515f41308285f8f221474c012025-02-03T05:58:24ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/15475681547568A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, VietnamThanh Q. Nguyen0Thao D. Nguyen1Lam Q. Tran2Nhi K. Ngo3Laboratory of Applied Mechanics (LAM), Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 740030, VietnamLaboratory of Applied Mechanics (LAM), Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 740030, VietnamLaboratory of Applied Mechanics (LAM), Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 740030, VietnamLaboratory of Applied Mechanics (LAM), Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 740030, VietnamWe propose a novel representative power spectrum density as a specific characteristic for showing responses of spans during a long operational period. The idea behind this method is to use the representative power spectrum density as a powerful tool to evaluate the stiffness decline of spans during their operation period. In addition, a new measurement method has been introduced to replace the traditional method of monitoring the health conditions of bridges through a periodic measurement technique. This helps to reduce costs when carrying out testing bridges. Besides, the proposed approach can be widely applied not only in Vietnam but also in many other underprivileged countries around the world. Obtained results show that, during the operational process of spans, there is not only a pure vibration evaluation such as bending vibration and torsion vibration tests but also a combination of various vibration types including bending-torsion vibration or high-level vibrations like first-mode bending and first-mode torsion. Depending on each type of structure and material properties, different types of vibrations will appear more or less during the operational process of spans under a random moving load. Furthermore, the representative power spectrum density is also suitable for evaluating and determining many different fundamental vibrations through the same measurement time as well as various measurement times.http://dx.doi.org/10.1155/2020/1547568 |
| spellingShingle | Thanh Q. Nguyen Thao D. Nguyen Lam Q. Tran Nhi K. Ngo A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam Shock and Vibration |
| title | A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam |
| title_full | A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam |
| title_fullStr | A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam |
| title_full_unstemmed | A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam |
| title_short | A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam |
| title_sort | new insight to vibration characteristics of spans under random moving load case study of 38 bridges in ho chi minh city vietnam |
| url | http://dx.doi.org/10.1155/2020/1547568 |
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