Manufacturing method of precast slab beam

Abstract

The invention relates to a precast slab beam, in particular to a manufacturing method of the precast slab beam. The manufacturing method of the precast slab beam comprises the following steps of S1, binding a reinforcement cage on a horizontal precast table seat; S2, bracing a template: bracing side templates and end templates on two sides and the end parts of the reinforcement cage; S3, casting:casting concrete in the template; S4, removing the template; and S5, maintaining. In the step S1, the precast table seat is fixedly provided with support plates on the outer sides of two ends of the reinforcement cage and is further intervally provided with auxiliary support plates on the surface under the reinforcement cage; the part, located between the support plates, of the reinforcement cageis in lap-joint on the auxiliary support plates; the reinforcement cage is provided with multiple horizontally supporting reinforcing steel bars side by side along the length direction of the slab beam and the supporting reinforcing steel bars are bound on the middle lower part of the reinforcement cage; and two ends of the supporting reinforcing steel bars are in lap-joint on the upper surfaces of the support plates. According to the manufacturing method of the precast slab beam provided by the invention, the reinforcing steel bars on a lower plate of the slab beam are casted in the middle ofthe lower plate of the slab beam, so that the uniformity of the reinforcement cage in concrete is improved, and the integrality of the precast slab beam is improved.

Description

technical field [0001] The invention relates to a prefabricated slab girder, in particular to a manufacturing method of the prefabricated slab girder. Background technique [0002] In the current construction process of bridge construction, the load-bearing structure of the upper part of the bridge mainly includes box girders, T beams and slab girders, which can be divided into cast-in-place beams and prefabricated beams according to the pouring form. The connection between cast-in-place beams and structural parts is reliable. The integrity is strong, but the construction cost is high and the period is long; while the construction period of the prefabricated beam is short, the pouring quality is relatively easy to control, the pouring difficulty is small, the cost is low, and it can be mass-produced. Therefore, the application of prefabricated beams is becoming more and more extensive. [0003] The process of making the prefabricated slab girder includes the following steps...

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Problems solved by technology

[0004] The disadvantage of the above-mentioned prior art is that after the steel bars are bound on the prefabricated pedestal, the steel bars are in contact with the upper surface of the prefabricated pedestal, and once the concrete is poured, the lower steel bars are easily exposed after the prefabricated slab girder is formed , so after the prefabricated slab girder is formed, it is necessary to repair the bottom of the slab girder with concrete, and the integrity of the prefabricated slab girder structure is insufficient

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