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| Tracking Analysis of Vibration Isolation Performance of Combined Track Bed System in Elevated Section of Offshore Environment |
| Received:March 22, 2023 Revised:May 30, 2023 |
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| DOI：10.7643/issn.1672-9242.2023.08.016 |
| KeyWord:vibration rubber material combined track bed offshore environment safety vibration isolation performance |
| Author | Institution |
| ZHANG Fan |
Luoyang Sunrui Rubber&Plastic Science and Technology CO., Ltd., Henan Luoyang , China |
| XU Ning |
Luoyang Ship Material Research Institute, Henan Luoyang , China |
| WANG Kai-xiang |
Qingdao Metro Operation Co., Ltd., Shandong Qingdao , China |
| HE Lin-hao |
Qingdao Metro Operation Co., Ltd., Shandong Qingdao , China |
| GAO Xiao-gang |
Shanghai University of Engineering Science, Shanghai , China |
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| Abstract: |
| Rubber materials are widely used in track vibration isolation measures, but their physical, chemical and mechanical properties gradually deteriorate due to the impact of heat, oxygen, salt, light, and dynamic stress during long-term use, and ultimately their good vibration isolation performance will be lost. The work aims to carry out tracking test research on the vibration isolation system of the combined track bed in the elevated section of the northern coastal area, and study and analyze the track dynamic deformation and vibration isolation performance analysis of the combined track bed system in the offshore environment after four years. The dynamic deformation and vibration analysis of the rails and track beds of the ordinary track bed and the combined track bed were conducted by experimental methods, and the dynamic deformation and vibration isolation values were calculated respectively. Compared to the ordinary track bed, the average vertical deformation of the combined track bed rail relative to the foundation was 3.63~3.72 mm, which met the safety requirements of 4 mm in relevant technical specifications. After four years of operation, the variation rate of vibration isolation capacity of the elevated line combined track bed was 1.88%, indicating that the combined track bed had stable vibration isolation performance in the offshore environment. The test results show that the combined track bed system still has good and relatively consistent safety and vibration isolation effects. |
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