ORCID Profile
0000-0003-3149-4966
Current Organisation
Chongqing University
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Publisher: World Scientific Pub Co Pte Lt
Date: 04-2011
Publisher: World Scientific Pub Co Pte Ltd
Date: 15-04-2023
DOI: 10.1142/S0219455423400072
Abstract: In this paper, the internal and external cancellation phenomena for d ed beams subjected to multi-moving loads are investigated in detail. To start, the theory for the vibration of a simply supported beam is revisited by including the effect of d ing. For the first time, a simple expression is derived for the free vibration of the d ed beam under multi-moving loads. Based on the concept of local minimum, two cancellation conditions are identified. One is the internal cancellation, which relates to the inherent property of the beam and is conventionally known. The other is the newly formulated external cancellation that relates to the number and spacing of moving loads. For comparison, both the resonant condition and the optimal criterion for span length of the bridge are also briefed. By comparing with the classical solution, the present simple expression for the free vibration of the beam is firstly validated. Then the factors affecting the cancellation are investigated against various load cases and d ing levels. The results show that external cancellation occurs more frequently due to the increase in the number and spacing of the moving loads. The d ing of the beam has a leaking effect on cancellation, in that nonzero vibration may occur, but it is also quickly d ed out by d ing itself.
Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2007
Publisher: Informa UK Limited
Date: 20-03-2018
Publisher: Elsevier BV
Date: 03-2019
Publisher: World Scientific Pub Co Pte Lt
Date: 03-2013
Publisher: Elsevier BV
Date: 09-2018
Publisher: World Scientific Pub Co Pte Ltd
Date: 30-11-2022
DOI: 10.1142/S0219455423500943
Abstract: Vehicle’s wheels were mostly modeled as a point, which can touch the valleys of pavement roughness, creating unrealistic high-frequency oscillation. This can be avoided by using the disk model for the wheels, which however adds significant complexity to the vehicle–bridge interaction (VBI) analysis. In this paper, a refined roughness formula is generated to account for the wheel size effect such that it can be used by point model. Still, the low-frequency part of the roughness presents some masking effect on the bridge scanning by the test vehicle. To this end, two countermeasures are suggested, i.e. residual response and traffic flows. This study has demonstrated that: (1) the roughness generated by the refined formula can reflect the trace of the disk model (2) the refined formula facilitates the VBI analysis by using the point model and (3) the two countermeasures for roughness are effective for improving the scanning of bridge frequencies.
Publisher: Elsevier BV
Date: 08-2023
Publisher: Elsevier BV
Date: 2023
Publisher: World Scientific Pub Co Pte Lt
Date: 03-2010
Publisher: Elsevier BV
Date: 07-2023
Location: Taiwan, Province of China
No related grants have been discovered for Yeong-Bin Yang.