TY - JOUR
T1 - Flexural behavior of slab-rib integrated bridge decks with GFRP skin and polyurethane foam core
AU - Li, Jing
AU - Wang, Jun
AU - Yadav, Bishnu Prasad
AU - Chen, Jiye
AU - Jin, Qiang
AU - Liu, Weiqing
N1 - Funding Information:
The financial support from the National Natural Science Foundation of China (Grant No.51578283), Modern Science and Technology Support Program of Jiangsu Construction Industry of China (Grant No. 2016-13), and Top Six Talent Projects in Jiangsu Province, China (Grant No. JZ-024), is greatly appreciated. Professor Weiqing Liu unfortunately passed away on June 3, 2020. The authors would like to express their gratitude to Professor Liu for his contribution to the paper.
Publisher Copyright:
© 2020 Jing Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/12/3
Y1 - 2020/12/3
N2 - This paper presents experimental and analytical studies on flexural behavior of slab-rib integrated Sandwich composite decks. The influences of layers of glass fiber-reinforced polymer (GFRP) facesheets, foam densities, and the existence of webs and cross beams are discussed herein. The test results showed that the existence of vertical webs remarkably improved the debonding of the facesheets from the foam core, thus increasing the ultimate load by 59% compared with the specimens without webs. However, the existence of horizontal webs has insignificant effect on the failure mode and ultimate load. Increasing the number of layers of GFRP facesheets from 2 to 4 and 6 results in 100% and 214% increments in ultimate loads, respectively, while the specimen with lower density of foam had a higher ultimate load than the specimen with higher density of foam due to deformation compatibility between GFRP skins and foam core with low density. The analysis software Abaqus Explicit was used to simulate the flexural behavior of test specimens, and the numerical results agreed well with the test data. The verified finite element model was extended to analyze the influences of the number of GFRP layers on the top of decks and the height of vertical webs. Based on equivalent method and compatibility of shear deformation, the flexural and shear rigidities were estimated. Then, analytical solution for displacement of the slab-rib integrated Sandwich composite decks subjected to four-point load was derived out. Comparison of analytical and experimental results shows that the displacements can be precisely predicted by the present theoretical model.
AB - This paper presents experimental and analytical studies on flexural behavior of slab-rib integrated Sandwich composite decks. The influences of layers of glass fiber-reinforced polymer (GFRP) facesheets, foam densities, and the existence of webs and cross beams are discussed herein. The test results showed that the existence of vertical webs remarkably improved the debonding of the facesheets from the foam core, thus increasing the ultimate load by 59% compared with the specimens without webs. However, the existence of horizontal webs has insignificant effect on the failure mode and ultimate load. Increasing the number of layers of GFRP facesheets from 2 to 4 and 6 results in 100% and 214% increments in ultimate loads, respectively, while the specimen with lower density of foam had a higher ultimate load than the specimen with higher density of foam due to deformation compatibility between GFRP skins and foam core with low density. The analysis software Abaqus Explicit was used to simulate the flexural behavior of test specimens, and the numerical results agreed well with the test data. The verified finite element model was extended to analyze the influences of the number of GFRP layers on the top of decks and the height of vertical webs. Based on equivalent method and compatibility of shear deformation, the flexural and shear rigidities were estimated. Then, analytical solution for displacement of the slab-rib integrated Sandwich composite decks subjected to four-point load was derived out. Comparison of analytical and experimental results shows that the displacements can be precisely predicted by the present theoretical model.
UR - http://www.scopus.com/inward/record.url?scp=85097779282&partnerID=8YFLogxK
U2 - 10.1155/2020/3597056
DO - 10.1155/2020/3597056
M3 - Article
AN - SCOPUS:85097779282
SN - 1687-8434
VL - 2020
JO - Advances in Materials Science and Engineering
JF - Advances in Materials Science and Engineering
M1 - 3597056
ER -