Steel box structure of combined bridge deck

Abstract

The invention discloses a steel box structure of a combined bridge deck. The steel box structure is characterized by light weight, less amount of used steel, good heat stability and durability, and low total engineering cost in a condition of same bearing capacity, and further is beneficial to improvement of the using performance of a bridge. The steel box structure comprises a steel box girder consisting of a bridge deck steel base plate (10), webs (11) at two sides and a bottom plate (12), wherein the bridge deck steel base plate (10) is fixedly connected with the webs (11) at two sides and a transversal clapboard, vertical shear-resistant plates (14) are fixedly arranged on the upper surface of the bridge deck steel base plate (10) at intervals along or vertical to the direction of the bridge, and a reinforced concrete layer (20) is cast on the bridge deck steel base plate (10).

Description

technical field [0001] The invention relates to a steel box structure of a steel bridge, in particular to a steel box structure applied to a composite bridge deck. Background technique [0002] Steel bridges are especially suitable for long-span bridges due to their light weight and high material strength. With the development of my country's infrastructure construction, more and more bridges need to cross rivers, rivers, deep trenches, and canyons. More and more long-span bridges will be built, and steel bridges will also be used more. [0003] Steel box girder is a commonly used form of steel bridge. Generally, steel box girder adopts all-steel structure, which is composed of steel bottom plate, steel web, steel transverse diaphragm and steel bridge deck with U ribs, and epoxy asphalt pavement is laid on it. Floor. However, due to the fatigue performance of the bridge deck, thermal stability, and the combination of the pavement layer and the steel bridge deck, the design...

AI Technical Summary

Problems solved by technology

However, due to the fatigue performance of the bridge deck, thermal stability, and the combination of the pavement layer and the steel bridge deck, the design and construction of this steel box structure are relatively difficult, and the anti-corrosion coating inside the box is difficult.

From the perspective of domestic application, there are few people who achieve good practical effect in actual use, which is a technical problem that has not been effectively solved in this field for a long time.

At the same time, due to the large amount of steel used and the high unit price of pavement materials, the overall cost is relatively high

Images