Steel fiber reinforced concrete vibration leveling construction method for bridge deck reinforcement

A technology of steel fiber concrete and construction method, which is applied in the direction of road construction reinforcements, bridges, bridge parts, etc., which can solve the problems of low preparation efficiency, difficult operation of steel fiber directional arrangement, and affecting the construction efficiency of bridge deck pavement, etc. To achieve the effect of rapid orientation arrangement

Pending Publication Date: 2021-05-25
ANHUI HIGHWAY BRIDGE ENG CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the current research results, the operation of directional arrangement of steel fibers is still relatively difficult, and the preparation efficiency is also low, which affects the construction efficiency of large-area bridge deck pavement and needs to be improved urgently

Method used

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  • Steel fiber reinforced concrete vibration leveling construction method for bridge deck reinforcement
  • Steel fiber reinforced concrete vibration leveling construction method for bridge deck reinforcement

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0036] refer to Figure 1-2 , a steel fiber concrete vibration leveling construction method for bridge deck reinforcement, comprising the following steps:

[0037] S1. Bridge deck finishing: including bridge deck standard leveling, steel bar leveling, impact decaking and chiseling treatment;

[0038]S2. On-site mixing of steel fiber concrete: concrete and steel fibers are added to the special mixer at the same time according to the weight ratio of 3-5:1, and the on-site mixing is carried out. The special mixer is suspended by driving the headstock. And discharge the material onto the bridge surface at a uniform speed on site;

[0039] The special mixing machine inc...

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Abstract

The invention discloses a steel fiber reinforced concrete vibration leveling construction method for bridge deck reinforcement. The construction method comprises the steps of bridge deck finishing, on-site mixing, paving, vibrating and compacting, scraper leveling, joint cutting, anti-sliding treatment, maintenance and the like. A special mixing machine is adopted for on-site mixing and comprises a mixing box and a stirring barrel, the mixing box is provided with a steel fiber feeding hopper, a triangular supporting plate, a concrete feeding hopper and a driving shaft, and the driving shaft is connected with a driving fluted disc and a plug-flow stirring paddle; the driving fluted disc is meshed with a driven fluted disc through a tooth column, the driven fluted disc is connected with a driven roller, and the driven roller is provided with wing plates. The stirring barrel is provided with a discharging pipe, a stirring shaft and a trapezoidal plate; the rotatable wing plates distributed at equal intervals are adopted to form a screening array, disordered steel fibers are rapidly arranged in an oriented mode, the trapezoidal plates basically parallel to the steel fibers are arranged for stirring after oriented arrangement, the contradiction between concrete stirring and steel fiber oriented arrangement is thoroughly solved. The obtained steel fiber reinforced concrete is high in strength.

Description

technical field [0001] The invention relates to the technical field of bridge deck paving, in particular to a construction method for vibrating and leveling steel fiber concrete for bridge deck reinforcement. Background technique [0002] In the deck pavement of box girder bridges, the strength of concrete is particularly important, so steel fiber reinforced concrete is widely used. Steel fiber reinforced concrete is a new type of multiphase composite material formed by mixing random distributed short steel fibers into ordinary concrete. These randomly distributed steel fibers can effectively prevent the expansion of micro-cracks and the formation of macro-cracks in concrete, significantly improve the tensile, bending, impact and fatigue properties of concrete, and have good ductility. [0003] Recent studies have shown that the distribution and orientation of steel fibers are closely related to the strength of steel fiber reinforced concrete, so a research direction - the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01C19/48E01C11/18
CPCE01D19/125E01C19/4833E01C19/4826E01C11/18
Inventor 刘邓胡斌董建林沈维成刘宏石伟
Owner ANHUI HIGHWAY BRIDGE ENG CO LTD
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