A ductile composite bridge deck composed of cold-formed z-shaped steel

A combined bridge and cold bending technology, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of increasing the repair and maintenance costs of bridge structures, affecting the corrosion resistance and durability of bridge decks, affecting structural fatigue performance, etc. Improve out-of-plane stability, avoid binding steel mesh, and improve construction efficiency
CN112227199BActive Publication Date: 2021-11-30ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2021-11-30

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Abstract

The invention discloses a ductile composite bridge deck composed of cold-formed Z-shaped steel, which comprises cold-formed and curled Z-shaped steel, transverse steel bars and ultra-high toughness concrete. The cold-formed Z-shaped steel is continuously placed laterally along the bridge deck and welded by fillet welds to form the steel skeleton of the bridge deck. The lower flange of the cold-formed Z-shaped steel is longer, which plays the role of external reinforcement of the plate surface; the upper flange is shorter and has a row of round holes on it, and the transverse steel bars pass through each cold-formed Z-shaped steel flange through the round holes. The ultra-high toughness concrete is poured on the steel skeleton of the bridge deck to protect the steel skeleton of the bridge deck. In the composite bridge deck system proposed by the present invention, the ultra-high toughness concrete can ensure that no or only tiny cracks below 100 microns will be generated, and the toughness and durability of the structure will be improved; The anti-shear and pull-out effects of the studs are improved, and the out-of-plane stability of the bridge deck is improved, the material cost and construction complexity are significantly reduced, and the fatigue performance is superior.
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Description

technical field

[0001] The invention relates to the technical field of structural engineering, in particular to a ductile composite bridge deck composed of cold-formed Z-shaped steel. Background technique

[0002] With the continuous advancement of my country's infrastructure construction process, people realize that the convenience of intra-city traffic and inter-city traffic greatly affects the development of the national economy and social progress; therefore, the country has achieved great development in road and bridge engineering in recent decades . Among them, bridge structures are not only widely used in urban overpasses, subway light rails, high-speed railways, etc., but also in river-crossing and sea-crossing structures. In recent years, with the construction of super-large bridge projects such as the Hong Kong-Zhuhai-Macao Bridge and the Hangzhou Bay Bridge, bridge structures at home and abroad are facing unprecedented opportunities for development. In the constr...

Claims

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