Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (6): 1865-1870.doi: 10.13229/j.cnki.jdxbgxb20181085

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Comparative analysis of mechanical characteristics of two typical fabricated culverts in Jilin

Ya-feng GONG1(),Bo WANG1,Guo-jin TAN1(),Li-min ZHANG2,Wen-ding WU3,Hai-peng BI1   

  1. 1. College of Transportation, Jilin University, Changchun 130022, China
    2. Jilin Traffic Planning and Design Institute, Changchun 130022, China
    3. Yingkou Municipal Traffic Affairs Center of Sparrow Circle, Yingkou 115000, China
  • Received:2018-10-27 Online:2019-11-01 Published:2019-11-08
  • Contact: Guo-jin TAN E-mail:gongyf@jlu.edu.cn;tgj@jlu.edu.cn

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Abstract:

According to the similarity theorem, two kinds of reduced-scale models of integral box culvert and four-member combined box culvertare are made, and the displacement and strain responses of key sections under various load conditions are tested using four-point bending loading method until the model is destroyed. The results of numerical simulation and test are compared to verify the validity of the finite element analysis model. Then the theoretical analysis model of the actual engineering structure is established, and the static responses of the two kinds of box culvert structures are numerically simulated based on the theoretical analysis model. The results show that the rigid-knot box culvert is better than the hinged model in resisting deformation, and the four-member composite box culvert can reduce the hinged section stress of the side wall at the cost of increasing the roof stress.

Key words: bridge and culvert engineering, prefabricated box culvert, model test, culvert structure, numerical simulation

CLC Number: 

  • U449.1

Fig.1

4×3 hinged box culvert"

Fig.2

Box culvert test model"

Fig.3

Layout of model points"

Fig.4

Loading diagram of model test"

Fig.5

Finite element model of box culvert"

Fig.6

Relationship between mid span displacementof roof and experimental load"

Fig.7

Displacement curves of roof and side walls at 8 kN"

Fig.8

Relationship between strain and load of roof span and side wall hinge joints"

Fig.9

Relationship between displacement and load of roof span and side wall hinge joints"

Fig.10

Displacement curves of roof and side walls at 128 kN"

Fig.11

Relationship between strain and load of roof span and side wall hinge joints"

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