Cement concrete bridge deck pavement structure capable of being applied to extreme operating environments

Abstract

The invention discloses a cement concrete bridge deck pavement structure capable of being applied to extreme operating environments (high temperature, raininess and moist), belonging to the technical field of bridge deck pavement. In the pavement process, a cement concrete bridge deck slab is subjected to scabbling and shot blasting treatment; a waterproof system, a multi-function layer, an anti-shearing layer and an anti-wearing layer are arranged on the cement concrete bridge deck slab from bottom to top; modified emulsified asphalt bonding layers are arranged between the multi-function layer and the anti-shearing layer, and between the anti-shearing layer and the anti-wearing layer, and lateral single-particle-size pre-mixing gravel drain blind ditches and a direct-releasing drain holes are formed in the side edge of the bridge deck. Compared with the prior art, the cement concrete bridge deck pavement structure has the advantages that the bridge deck pavement disease, especially early damage cause are considered, the structure and material design is implemented according to the concept of the cement concrete bridge deck pavement layering function, not only is the joint between the pavement layer and the cement concrete face enhanced, but also the high-temperature stabilizing effect and the water preventing and discharging effect of the mixture of a surface layer are strengthened, the endurance quality of the pavement layer structure is improved, and the popularization and application value is good.

Description

technical field [0001] The invention relates to a bridge deck pavement technology, in particular to a cement concrete bridge deck pavement structure applicable to extreme use environments. Background technique [0002] The bridge deck pavement is an extremely complex multi-directional stress structure, the influencing factors are intricate, and the macroscopic performance is also different. The failure of the bridge deck pavement is attributed to the variation of the mechanical properties (stress, strain) or the weakening of the function of the pavement material under the coupling effect of load and environment, mainly manifested in four aspects: ①viscoplastic permanent deformation; ②fatigue Cracking; ③ Shear failure; ④ Partial impact crushing and fracture. Especially in extreme environmental conditions such as high temperature and rainy summer, severe cold and freezing winter, seawater salt solution corrosion and heavy traffic, the above-mentioned damage forms are more lik...

AI Technical Summary

Problems solved by technology

[0017] The technical task of the present invention is to provide a cement concrete bridge deck pavement structure that can be applied to extreme use environments in view of the above-mentioned deficiencies in the prior art. It has the characteristics of long life, strong durability, high comfort, etc. A series of key technical issues such as poor fatigue resistance of concrete bridge deck pavement functional layers, water-soluble erosion, and early bridge deck comprehensive diseases in complex and extreme environments such as severe cold and freezing in winter and seawater salt erosion

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