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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Main Authors: Thanh Q. Nguyen, Thao D. Nguyen, Lam Q. Tran, Nhi K. Ngo
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2020/1547568
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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.
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institution Kabale University
issn 1070-9622
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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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