Construction method of high-durability unequal-thickness steel bridge deck pavement structure

Abstract

The invention relates to a construction method of a high-durability unequal-thickness steel bridge deck pavement structure. The construction method comprises the following steps that firstly, cleaning and sand blasting derusting are conducted on an unequal-thickness steel bridge deck slab (1); step 2, arranging an anti-rust layer (2); step 3, spraying a waterproof adhesive layer (3); step 4, laying a bottom gravel layer (4); 5, laying a leveling layer (5); step 6, spraying a lower bonding layer (6); seventhly, a lower gravel layer (7) is arranged; step 8, paving a structural layer (8); step 9, spraying an upper bonding layer (9); and step 10, paving the wearing surface layer (10). The construction method is high in mechanization degree and low in operation difficulty, the pavement structure can be put into service through short-term maintenance after pavement construction is finished, the disease development of the pavement structure is slow and limited under the long-term action of vehicle load, only the abrasion surface layer needs to be overhauled regularly, the overall maintenance cost is low, the maintenance difficulty is low, and the maintenance cost is low. And the steel bridge deck slab has excellent matching performance with the steel bridge deck slabs with different thicknesses.

Description

technical field [0001] The invention relates to the technical field of bridge deck engineering, in particular to a construction method for a high-durability unequal-thickness steel bridge deck pavement structure. Background technique [0002] With my country's rapid economic growth and scientific and technological progress, the demand for cross-river and sea-crossing traffic is increasing. The construction of long-span highway steel bridges is developing rapidly. my country's steel bridge deck pavement materials and technologies are also directly imported from foreign mature pavements. The initial stage of structure and process transitions to the innovation stage based on independent research and development. [0003] Epoxy asphalt concrete has excellent road performance and is a common material for pavement of long-span steel bridge decks. Since the service environment of steel bridge deck pavement is different from that of ordinary asphalt pavement, and highway steel bridg...

AI Technical Summary

Problems solved by technology

Compared with the pavement of equal-thickness steel bridge decks, unequal-thickness steel bridge decks have a large number of sharp angles and edges in the thickness variation area, which makes anti-corrosion coating more difficult. The uniformity of the waterproof adhesive layer will directly affect the adhesive force of the waterproof adhesive layer, resulting in delamination and other diseases in the pavement; secondly, the traditional concrete paving and rolling process is also difficult to meet the construction quality requirements of unequal thickness pavement , prone to pavement diseases such as broken aggregates and cracks

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