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利用ANSYS软件对空心板桥模型进行了计算分析,该空心板桥模型的桥面铺装层间采用接触方式。文中分析了空心板桥横坡变化、铺装层厚度变化、铺装层弹性模量变化以及层间黏聚力变化对铺装层中各层应力的影响。计算结果表明:增加横坡坡度,调平层和沥青混凝土层的纵向剪应力明显增大;增加调平层厚度,沥青混凝土层和防水层的应力明显变化;增加调平层弹性模量,调平层的应力明显增加;增加防水层厚度,防水层纵横向拉应力都会减少;增加防水层弹性模量,防水层应力有明显增加,沥青混凝土层各应力明显减少;当沥青混凝土层厚度不大于12cm时,铺装层各层多数应力随沥青层厚度增加而减小;增加沥青层弹性模量,防水层纵横向拉应力明显减少,沥青层应力增加明显;当层间黏聚力大于0.125 MPa时,铺装层各层应力以及层间应力基本保持不变。
The calculation and analysis of the hollow slab bridge was carried out by using ANSYS software. The deck slab of the hollow slab bridge model was made by contact method. The paper analyzes the changes of the slab bridge cross-slope changes, changes in the thickness of the pavement, pavement elastic modulus changes and cohesion between layers of pavement layer of the impact of stress. The calculation results show that the longitudinal shear stress of the leveling layer and the asphalt concrete layer increases obviously when the slope gradient is increased; the thickness of the leveling layer increases, the stress of the asphalt concrete layer and the waterproof layer changes obviously; the elastic modulus of the leveling layer increases Increase the thickness of the waterproof layer, the longitudinal and transverse tensile stress of the waterproof layer will be reduced; increase the elastic modulus of the waterproof layer, the waterproof layer stress has increased significantly, the stress of the asphalt concrete layer significantly reduced; when the thickness of the asphalt concrete layer is not greater than 12cm, most of the stress of pavement layer decreases with the increase of the thickness of asphalt layer; increasing the elastic modulus of asphalt layer, the longitudinal and transverse tensile stress of the waterproof layer decreases obviously and the stress of asphalt layer increases obviously; when the interlaminar cohesion is more than 0.125 MPa When the pavement layer of stress and stress between layers remained unchanged.