UHPC (ultra-high performance concrete) poured orthotropic steel bridge deck combination structure and manufacturing method thereof

Abstract

The invention relates to a UHPC (ultra-high performance concrete) poured orthotropic steel bridge deck combination structure and a manufacturing method thereof. The UHPC poured orthotropic steel deck combination structure comprises a bottom steel bridge deck, shear nails, a reinforcing mesh and an UHPC pavement layer, wherein the shear nails and the reinforcing mesh are arranged on the steel bridge deck, the UHPC pavement layer is poured by UHPC and wraps the shear nails and the reinforcing mesh, and the UHPC pavement layer and the steel bridge deck form the bridge deck combination structure. Compared with existing steel bridge deck pavement, the strength, toughness and durability of the steel bridge deck combination structure can be remarkably improved, curing condition requirements are low, steam curing and pressure forming are omitted, construction technology is simple and convenient, construction quality is easily controlled, the tension resistance and the shear resistance of the pavement layer are effectively enhanced by the shear nails and the reinforcing mesh, the problem of diseases caused by asphalt pavement is solved, and damage to the pavement layer such as cracking, upheaval, displacement and pit slots is avoided.

Description

technical field [0001] The invention relates to the field of steel bridge deck pavement, in particular to a UHPC pouring orthotropic steel bridge deck composite structure and a manufacturing method thereof. Background technique [0002] At present, the traditional orthotropic steel bridge deck pavement forms in China are mainly divided into asphalt mastic macadam mixture (SMA) pavement, poured asphalt mixture (GA) pavement and epoxy asphalt mixture (EA). ) pavement layer, when these three types of pavement are directly paved on the orthotropic steel plate, the internal deformation of the steel plate is complicated under the load of the vehicle, and the longitudinal U-shaped rib and transverse diaphragm are very likely to cause steel box girder and pavement Stress concentration in the pavement leads to cracking, wrapping, pushing, pits and other pavement damages. Even if the pavement is repaired, the effect is often not ideal, and even damage occurs in a short period of time,...

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Problems solved by technology

However, this patent uses aluminum alloy as the surface layer, which is more expensive. At the same time, the rubber layer bears the repeated shear load of the shear nail, which is easy to age and produce irreversible deformation, which affects the bearing capacity.

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