Steel-fiber reinforced composite material high strength concrete hollow interlayer combination bridge deck

Abstract

The invention relates to a steel-fiber reinforced composite material high strength concrete hollow interlayer combination bridge deck comprising reinforced concrete. A fiber reinforced composite material T-shaped rib is arranged in the reinforced concrete, the T shape upper part of the fiber reinforced composite material T-shaped rib is embedded in the reinforced concrete, the T shape lower part extends from the inside of the reinforced concrete to the outside of the reinforced concrete, a fiber reinforced composite material double-layer hollow plate is connected to the T shape lower part, and a reinforcement which is intersected with the T-shaped rib penetrates through the T-shaped rib. The reinforcement is arranged in high strength concrete and can be used as a principle bar and also a shearing force connecting piece. The invention can be directly used as a plate type beam, or form a combination beam by being connected with a girder and a reinforced concrete beam, can be applied to a great amount of newly-built bridges with middle and small spans, can also replace a damaged old bridge deck to shorten the construction period, accelerate the building and maintenance speed and can also strengthen the durability of a bridge structure.

Description

technical field [0001] The invention relates to a composite member formed of steel with high durability, fiber reinforced composite material and high-strength concrete, which belongs to the field of new materials, new structures and composite structures, and can be widely used in a large number of small and medium-span bridges to speed up construction and repair replacement speed. Background technique [0002] With the rapid development of the economy, my country's transportation industry is in a special period when both new construction and maintenance are emphasized. On the one hand, the state has invested a lot of money in the construction of highway bridges. According to statistics, by the end of 2006, there were 533,600 highway bridges nationwide, of which 501,600 were small and medium-span bridges, accounting for 94%; on the other hand, in the long-term use During the process, the external natural environment and overloading caused different degrees of damage to the c...

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Problems solved by technology

Therefore, the existing FRP-concrete composite slab has a relatively large self-weight

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