Ultra-high performance concrete multi-ribbed plate without transverse ribs

Abstract

The utility model relates to an ultra-high performance concrete multi-ribbed plate without transverse ribs, which mainly solves the technical problems that an existing ultra-high performance concreterib is easy to crack due to fatigue, is worse in tensile and compressive properties, low in section utilization efficiency, high in cost and the like. The key points of the technical scheme are that the ultra-high performance concrete multi-ribbed plate comprises the dense ribs (2) and a panel (1), the panel (1) is arranged on the dense ribs (2), and the ultra-high performance concrete multi-ribbed plate is characterized in that the dense ribs (2) are the longitudinal ribs (21), more than two parallel longitudinal ribs (21) are arranged under the panel (1), and a ribbed bottom steel plate (211) is arranged under the longitudinal ribs (21); a shearing force long connecting piece (212) is arranged on the upper surface of the ribbed bottom steel plate (211), and a steel mesh reinforcement isarranged in the panel (1); one end of the shear force long connecting piece (212) is connected with the ribbed bottom steel plate (211), the other end of the shear force long connecting piece (212) extends into the steel mesh reinforcement in the panel (1), and the top of the shear force long connecting piece (212) and the steel mesh reinforcement are located on a same horizontal plane; the longitudinal ribs (21) and the panel (1) form a whole by pouring the ultra-high-performance concrete.

Description

technical field [0001] The invention relates to an ultra-high-performance concrete dense-rib slab without transverse ribs. Background technique [0002] The bridge deck directly bears the vehicle load and the environment, and is the most direct component affected by overload, corrosion, fatigue and other unfavorable factors. Therefore, its working status will directly affect the durability and driving comfort of the main structure of the inverted bridge. Orthotropic steel decks and ordinary concrete decks are two main types of decks currently used in bridge engineering. Ordinary concrete bridge decks can better adapt to asphalt concrete bridge deck pavement or cement pavement, and the driving effect is better. The demand for span bridges, and it is easy to crack near the wet joints, negative bending moment area, and stay cable anchorage area. Orthotropic steel bridge decks have the advantages of light weight, large ultimate bearing capacity, and short construction period, ...

AI Technical Summary

Problems solved by technology

However, this type of structure is only suitable for ordinary concrete composite bridge decks. For ultra-high performance concrete composite bridge decks, the strong confinement steel plate is easy to cause shrinkage and cracking of ultra-high performance concrete, and the excellent compressive and tensile properties of ultra-high performance concrete cannot be exerted. Moreover, the steel plate with holes in the head welded at both ends of the bottom steel plate in the width direction will block the continuous and random distribution of steel fibers, which will have an adverse effect on structural safety

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