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Yao Qian

Bio: Yao Qian is an academic researcher from Chongqing University. The author has contributed to research in topics: Damping ratio & Finite element method. The author has an hindex of 4, co-authored 4 publications receiving 106 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the response of the contact point of the vehicle with the bridge, rather than the vehicle itself, was proposed for modal identification of bridges by a moving test vehicle, and approximate closed-form solutions were derived for the vehicle and contact-point responses, and they were verified by finite element solutions.
Abstract: The response of the contact point of the vehicle with the bridge, rather than the vehicle itself, is proposed for modal identification of bridges by a moving test vehicle. To begin, approximate closed-form solutions were derived for the vehicle and contact-point responses, and they were verified by finite element solutions. The contact-point acceleration is born to be free of the vehicle frequency, an annoying effect that may overshadow the bridge frequencies in case of rough surface. From the frequency response function (FRF) of the vehicle with respect to the contact point, it was shown that the contact-point response generally outperforms the vehicle response in extracting the bridge frequencies because it could identify more frequencies. In the numerical simulations, the contact-point response was compared with the vehicle response for various scenarios. It is concluded that in each case, say, for varying vehicle speeds or frequencies, for smooth or rough road surfaces, with or without existing traffi...

89 citations

Journal ArticleDOI
TL;DR: In this article, the authors used the contact point response of a moving test vehicle for the damage detection of bridges, where the Hilbert transform was used to calculate the instantaneous amplitude squared (IAS) of the driving component of the contact-point response.

76 citations

Journal ArticleDOI
Yeong-Bin Yang1, Bin Zhang1, Yanan Chen1, Yao Qian1, Yuntian Wu1 
TL;DR: In this article, a simple theoretical framework is presented for identifying the damping ratios of simply supported beams using a two-axle moving test vehicle, equipped with uniformly spaced accelerometers and laser sensors.

52 citations

Journal ArticleDOI
TL;DR: In this article, the instantaneous amplitude squared (IAS) of the driving component of the contact point response of a moving test vehicle was proposed for the damage detection of the sustaining bridge.
Abstract: The instantaneous amplitude squared (IAS) of the driving component of the contact-point response of a moving test vehicle was proposed for the damage detection of the sustaining bridge. As a supple...

21 citations


Cited by
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Journal ArticleDOI
TL;DR: It was found that the vehicle in the non-moving state can catch more bridge frequencies than in the moving state, and the contact-point response performs better than the car-body response, which can be used to detect the first few frequencies of the bridge, including the torsional frequency.

75 citations

Journal ArticleDOI
TL;DR: The vehicle scanning method (VSM), an indirect approach for bridge measurement, has attracted intensive attention since it was proposed and is currently being applied to bridge measurement in China.
Abstract: The vehicle scanning method (VSM), an indirect approach for bridge measurement, has attracted intensive attention since it was proposed. By this method, a moving test vehicle is employed to detect ...

58 citations

Journal ArticleDOI
Yeong-Bin Yang1, Bin Zhang1, Yanan Chen1, Yao Qian1, Yuntian Wu1 
TL;DR: In this article, a simple theoretical framework is presented for identifying the damping ratios of simply supported beams using a two-axle moving test vehicle, equipped with uniformly spaced accelerometers and laser sensors.

52 citations

Journal ArticleDOI
TL;DR: The vehicle scanning method (VSM) has attracted intensive attention since it was proposed by Yang and co-workers in 2004 as mentioned in this paper , which is an indirect approach for bridge measurement, and has been extended to construction of mode shapes, identification of damping ratios, and detection of damages for bridges, among others.
Abstract: The vehicle scanning method (VSM), an indirect approach for bridge measurement, has attracted intensive attention since it was proposed by Yang and co-workers in 2004. This method is featured by the fact that no vibration sensors need to be mounted on the bridge, but only one or few vibration sensors are required on the test vehicle. Such an idea has been verified by the field tests, and then quickly extended to construction of mode shapes, identification of damping ratios, and detection of damages for bridges, among others. Compared with the conventional direct method that relies fully on the vibration responses recorded by sensors equipped on the bridge, the advantage of the indirect method is obvious: mobility, economy, and efficiency. Over the years, a rapidly growing number of research works have been conducted along the lines of the VSM for bridge measurement. Particularly, extensive lab experiments and field tests have been carried out worldwide to implement the VSM, resulting in numerous new findings. Moreover, while the technique is still flourishing, it is nourished by inclusion of modern devices such as smartphones, vehicular networks, and cloud. In 2018, a review paper was compiled by two of the authors. To reflect the recent rapid growth of research in this area since then, there exists a need to make an expansion to include the huge number of newly published papers (274 papers in total). As an extension of the 2018 paper, this paper represents a state-of-the-art review of the related researches conducted worldwide. Comments and recommendations will be made at proper places, while concluding remarks including future research directions will be presented at the end of the paper.

52 citations