Double-deck bridge to reduce height difference between floors

Abstract

The invention discloses a double-layer bridge for reducing the height difference between layers, which comprises a road pavement protection layer, a portal pier column and a lower bridge deck, and also includes a road beam and a longitudinal beam. The road beam is horizontally laid on the longitudinal beam. A pavement protective layer is laid on the upper surface of the highway beam, one end of the longitudinal beam is connected to the lower surface of the highway beam, the other end of the longitudinal beam is connected to the portal pier column, and the lower bridge deck is arranged between the highway beam and the road beam. Between portal piers. The invention cleverly utilizes the idle space that does not occupy the building boundary, thereby greatly reducing the height difference between the layers of the double-layer bridge, not only can be used for the construction of double-layer bridges with highways and railways, but also similar double-layer structures can adopt this kind of structure. The structural form, its actual effect is finally reflected in reducing the construction scale and reducing the project cost.

Description

technical field [0001] The invention relates to a double-layer bridge with small and medium spans in traffic engineering, in particular to a double-layer bridge with reduced height difference between floors. Background technique [0002] At present, the double-deck bridges with small and medium-span highways and railways are mostly constructed by erecting conventional standard beams on double-deck portal piers. The cap beam on the pier, the road beam support system, the road beam and the road pavement protection layer, its biggest disadvantage is that the height difference between layers is too large, and the huge construction scale makes the project cost high. How to reduce the height difference between floors of double-deck bridges has become an important topic to save engineering construction costs. [0003] Since the railway use limit and road pavement protective layer in the height difference between layers of double-layer bridges cannot be changed, the purpose of redu...

AI Technical Summary

Problems solved by technology

In order to reduce the height of the hat beam on the portal pier, the road beam support system and the height of the road beam in the composition of the interstory height difference, there is a processing method called "implicit hat beam" in the current technology, but using this method The structure needs to be reduced, so it will objectively become the weak point of the structure. With the deepening of its understanding, this technology is not used much anymore

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