防水粘结层对桥面铺装受力的影响

Mechanical Effect of Waterproof Layer upon Bridge Deck Pavement

简要介绍了桥面铺装层的受力特点和破坏形式,采用三维有限元软件,对铺装层进行力学计算,探讨了最大剪应力沿深度方向的变化规律,并着重分析了防水粘结层对桥面铺装受力的不利影响。结果表明:防水粘结层是桥面铺装层的薄弱环节,不设防水粘结层将大幅改善桥面铺装的受力性能。

A brief introduction to the bridge deck pavement is given in this paper. With the help of 3D software, the mechanical calculations of bridge deck pavement are done successfully. The maximum shear stress of each layer is gained by analyzing the results of calculations and the law according to which the maximum shear stress changes along the depth has been discussed too. Based on the calculations, the effect of waterproof layer upon the bridge deck pavement is analyzed. Analysis shows that the waterproof layer is the weakness of the bridge deck pavement and the mechanical properties can be improved markedly if omitting the waterproof layer.