International Journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN: 2313-626X

Frequency: 12
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 Volume 9, Issue 7 (July 2022), Pages: 24-32

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 Original Research Paper

 Incorporating the effect of approach slab to the dynamic response of simply supported bridges under moving vehicle

 Author(s): Phuong Hoa Hoang 1, *, Hoang An Thai 1, Dinh Trung Pham 2

 Affiliation(s):

 1Faculty of Road and Bridge Engineering, The University of Danang–University of Science and Technology, Da Nang, Vietnam
 2Department of Civil Engineering, Mientrung University of Civil Engineering, Tuy Hoa, Vietnam

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0002-2150-9231

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2022.07.004

 Abstract:

Reinforced concrete approach slabs serve as a transitional component between the roadway pavement and the bridge deck. Due to the settlement of the embankment soil, the slab is bent, and its slope grade will be suddenly changed resulting in bumps at both ends of the deck; this may increase the dynamic response of bridges induced by the interaction with moving vehicles. In addition, the presence of such bumps not only causes an uncomfortable ride but also exhibits a potentially hazardous condition to the traffic. Since most of the studies have considered either the interaction model between the slab and soil or between the bridge and moving load; in this study, a novel finite element model is established for the bridge under traffic loads, considering the presence of the approach slab that is simulated as a beam rested on a dynamic soil model. The separated models of the approach slab and bridge deck are validated by previous studies and demonstrate their accuracy in predicting the dynamic response of the bridge-vehicle system. A comprehensive parametric study is then performed considering the effect of the soil stiffness, the stiffness of the shear layer of the foundation, and the approach slab length. The results of the study are useful criteria for the practice design of the approach slab in different embankment conditions.

 © 2022 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Approach settlement, Transition slab, Dynamic response, Dynamic foundation, Moving vehicle

 Article History: Received 19 January 2022, Received in revised form 15 April 2022, Accepted 16 April 2022

 Acknowledgment 

This research is funded by Funds for Science and Technology Development of the University of Danang under project number B2019-DN02-55.

 Compliance with ethical standards

 Conflict of interest: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

 Citation:

 Hoang PH, Thai HA, and Pham DT (2022). Incorporating the effect of approach slab to the dynamic response of simply supported bridges under moving vehicle. International Journal of Advanced and Applied Sciences, 9(7): 24-32

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 Figures

 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 

 Tables

 Table 1 Table 2 Table 3

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