Small and medium-sized steel bridge deck pavement system and implementation method

Abstract

The invention relates to a small and medium-sized steel bridge deck pavement system, which is characterized in that: the pavement system is provided with a waterproof layer, a bonding layer, a waterproof modified asphalt sand layer, a hot spray SBS modified asphalt layer and a high viscosity modified asphalt layer respectively from the bottom up. The waterproof layer involved in the invention adopts a modified epoxy resin waterproof layer, and blocks corrosion of the steel bridge deck. The bonding layer adopts bonding particles and gravel, improves the adhesion between asphalt sand and the waterproof layer, and the asphalt sand mixture has the flexibility of a poured asphalt mixture, however the high temperature stability of the asphalt sand mixture is greatly improved compared to the poured asphalt mixture. The high viscosity modified asphalt layer serves as a slip resistant surface layer and endows the system with good high temperature stability, low temperature crack resistance and stress relaxation ability. The pavement layer has low requirements for construction environment conditions, does not need special construction equipment and has no harsh technological requirements. Generally, the pavement system has the advantages of good high temperature stability, strong anti-rutting ability, strong crack resistance, good water tightness, no water seepage, and good deformation compliance. The construction technology is mature, the construction period is short, the pavement system can be immediately opened to traffic, and the engineering cost is low.

Description

technical field [0001] The invention relates to steel bridge deck paving, in particular to the bridge deck paving of small and medium-sized steel bridge decks in cities, in particular to a bridge deck paving system and implementation method suitable for small and medium-sized steel bridge decks in cities. Background technique [0002] Because the steel bridge deck is welded and fixed on the orthotropic structural beams and longitudinal ribs, and the steel deck system is flexible and easy to bend, the deformation and stress characteristics under the action of vehicle load and temperature load are very obvious compared with ordinary cement concrete bridges. In different parts of the same bridge, the deformation and force are also very different. [0003] A large number of studies have been carried out at home and abroad on long-span steel bridge deck pavement. The more mature technologies are divided into the following three categories: epoxy asphalt concrete pavement, poured ...

AI Technical Summary

Problems solved by technology

[0015] In occasions with large slopes such as up and down ramps, it is not suitable to use self-flowing pouring asphalt mixture, which may easily cause uneven thickness

[0016] 5. Difficulty

This approach puts forward more important requirements on the shear strength of concrete, and does not essentially solve the special problems faced by steel bridge deck pavement

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