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Frontiers of Structural and Civil Engineering

ISSN 2095-2430

ISSN 2095-2449(Online)

CN 10-1023/X

邮发代号 80-968

2019 Impact Factor: 1.68

Frontiers of Structural and Civil Engineering  2022, Vol. 16 Issue (7): 896-908   https://doi.org/10.1007/s11709-022-0856-7
  本期目录
Structural dimension optimization and mechanical response analysis of fabricated honeycomb plastic pavement slab
Zixuan CHEN1(), Tao LIU1, Xiao MA1, Hanyu TANG1, Jianyou HUANG2, Jianzhong PEI1
1. School of Highway, Chang’an University, Xi’an 710064, China
2. School of Civil Engineering, Tianjin University, Tianjin 300350, China
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Abstract

Because of favorable mechanical properties, deformation resistance and being conducive to environmental protection, honeycomb fabricated plastic pavement slabs are highly recommended these years. At present, most studies focus on the performance of plastic materials, however, the dimension optimization of fabricated plastic pavement slab is rarely mentioned. In this paper, an optimized geometry of the honeycomb pavement slab was determined through finite element analysis. Mechanical response of honeycomb slabs with different internal dimensions and external dimensions were explored. Several dimension factors were taken into consideration including the side length, rib thickness, the thickness of both top and bottom slabs of honeycomb structure and the length, the width and the thickness of the fabricated plastic slab. The results showed that honeycomb pavement slab with 6 cm bottom slab, 12 cm top slab,18 cm side length and 6 cm rib thickness is recommended, additionally, an external dimension of 4 m × 4 m × 0.45 m is suggested. Then, the mechanical responses of this optimized fabricated plastic slab were further investigated. Significance of different influencing factors, including wheel load, elastic modulus of plastic material, base layer thickness, soil foundation modulus and base layer modulus were ranked.

Key wordshoneycomb structure    plastic pavement    dimension optimization    mechanical response    factor significance
收稿日期: 2021-11-12      出版日期: 2022-11-17
Corresponding Author(s): Zixuan CHEN   
 引用本文:   
. [J]. Frontiers of Structural and Civil Engineering, 2022, 16(7): 896-908.
Zixuan CHEN, Tao LIU, Xiao MA, Hanyu TANG, Jianyou HUANG, Jianzhong PEI. Structural dimension optimization and mechanical response analysis of fabricated honeycomb plastic pavement slab. Front. Struct. Civ. Eng., 2022, 16(7): 896-908.
 链接本文:  
https://academic.hep.com.cn/fsce/CN/10.1007/s11709-022-0856-7
https://academic.hep.com.cn/fsce/CN/Y2022/V16/I7/896
Fig.1  
structural layer material thickness (cm) elastic modulus (MPa) Poisson’s ratio
surface course PA66-GF30% plastic 45 3000 0.3
base layer cement stabilized macadam 20 1500 0.25
soil foundation 600 50 0.4
Tab.1  
Fig.2  
Fig.3  
factor level bottom slab thickness (cm) top slab thickness (cm) honeycomb side length (cm) honeycomb rib thickness (cm)
1 6 8 14 2
2 8 10 18 4
3 10 12 22 6
4 12 14 26 8
Tab.2  
Fig.4  
model sources of variation sum of squares degree of freedom mean square F value Significance
1 regression 1.956 4 0.489 21.47 0
residual 0.251 11 0.023
total 2.206 15
2 regression 2.083 4 0.521 7.442 0.004
residual 0.77 11 0.07
total 2.853 15
3 regression 0.189 4 0.047 50.402 0
residual 0.01 11 0.001
total 0.2 15
4 regression 2.128E+06 4 5.320E+05 120.598 0
residual 4.853E+04 11 4.412E+03
total 2.177E+06 15
Tab.3  
evaluation index tensile stress compressive stress vertical displacement elastic modulus
sensitivity (bottom slab thickness) 0.1 0.24 0.06 0.08
sensitivity (top slab thickness) 0.78 0.57 0.38 0.15
sensitivity (honeycomb side length) 0.33 0.21 0.15 0.16
sensitivity (honeycomb rib thickness) 0.34 0.58 0.33 0.84
Tab.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
Fig.9  
Fig.10  
Fig.11  
Fig.12  
Fig.13  
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Fig.16  
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