Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (6): 1719-1728.doi: 10.13229/j.cnki.jdxbgxb.20230096

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Meso⁃mechanical behavior analysis of asphalt bridge deck pavement after interlayer bonding failure

Chun-di SI1,2(),Ya-ning CUI2,Zhong-yin XU3,Tao-tao FAN2   

  1. 1.State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
    2.School of Traffic and Transportation，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
    3.Hebei Xiongan Jingde Expressway Co. ，Ltd. ，Baoding 071700，China
  • Received:2023-02-02 Online:2023-06-01 Published:2023-07-23

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Abstract:

Firstly， the mesoscopic parameters of asphalt upper layer， lower layer and waterproof bond layer were calibrated by uniaxial compression test， splitting test and oblique shear test. Then， by setting the failure area of interlayer bond， the stress， displacement and velocity of each structural layer was monitored. The results show that the bonding failure between asphalt surface layers significantly affects the stress and motion state of the top particles of the upper and lower layers， and the transverse stress of the bottom particles increases obviously. The bonding failure between the asphalt surface and the bridge panel leads to the increase of transverse stress of the particles at the bottom of the lower layer and the transverse movement trend between the layers. By monitoring the mechanical state changes of different structural layer materials after interlayer bonding failure， the development of bridge deck paving layer disease can be predicted， which can provide reference for preventive maintenance of asphalt bridge deck pavement.

Key words: road engineering, bridge deck pavement, discrete element method, meso-mechanical, interlaminar bonding failure

CLC Number: 

  • U414

Fig.1

Parallel bonding model"

Fig.2

Contact bonding constitutive model"

Fig.3

Discrete element model of bridge deck pavement"

Fig.4

Contact model distribution"

Fig.5

Analysis of simply supported beam bridge of FEM"

Fig.6

Laboratory test of different structural layer materials"

Fig.7

Numerical simulation of uniaxial compression test"

Fig.8

Numerical simulation of split test"

Fig.9

Numerical simulation of oblique shear test"

Fig.10

Comparison between laboratory test and simulation results"

Table 1

Mesoscopic parameters of each structural layer of bridge deck pavement"

结构层位颗粒密度/（kg·m-3）刚度比拉伸强度/MPa剪切强度/MPa弹性模量/MPa
上面层粗集料24502.52.222.652200
砂浆21002.51.361.8572
下面层粗集料24502.01.82.33200
砂浆21002.01.31.852
水泥混凝土桥面板粗集料250013.24.52900
砂浆215014.55.4250

Fig.11

Typical particle identification of deck pavement"

Fig.12

Layout of the measure"

Fig.13

Rolling load loading model"

Fig.14

Scroll loading contact"

Fig.15

Tire ground pressure curve"

Fig.16

Contact model diagram of the interlayer bond failure structure at different positions"

Fig.17

Transverse stress response under different interlayer bonding states"

Fig.18

Vertical stress response under different interlayer bonding states"

Fig.19

Shear stress response under different interlayer bonding states"

Fig.20

Vertical displacement of particles under different interlayer bonding states"

Fig.21

Vertical velocity of particles under different interlayer bonding states"

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