Finite Element Analysis on Shear Stress of Waterproofing Bond Layer for Concrete Bridge Deck
The variation law of the maximum shear stress between layers of concrete bridge deck asphalt pavement is simulated and analyzed by ANSYS finite element software.The results show that the maximum shear stress of the waterproof adhesive layer decreases with the increase of the thickness and modulus of the asphalt pavement,and when the modulus of the waterproof adhesive layer is 10 MPa～50 MPa,the maximum shear stress between the bottom layer of the asphalt pavement and the waterproof adhesive layer fluctuates greatly,and the trend of 50 MPa～100 MPa is a little slower,and tends to be smooth when it exceeds 200 MPa,so the modulus of the waterproof adhesive layer is preferred to be 100 MPa～300 MPa.Vehicle braking and overloading have a great influence on the maximum shear stress between the bridge deck pavement layers.When the friction coefficient increases from 0.2 to 1.0,the maximum shear stress inside the waterproof adhesive layer increases from 0.133 MPa to 0.283 MPa,with an increase of 112.8％.The overloading coefficient is linearly positively correlated with the maximum shear stress of the bridge deck pavement structure.Controlling heavy-duty vehicle and overloading can effectively avoid shear damage of the bridge deck pavement.The purpose of this paper is to explore the variation law of the maximum shear stress between layers of asphalt pavement structure,so as to provide theoretical support for the optimization of waterproof adhesive layer materials.
asphalt mixturewaterproof bonding layershear stressstructural layerbridge deck pavementfinite element method
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