Automatic slurry replenishing device for post-tensioned precast beam slab and application method thereof

Abstract

The invention discloses an automatic slurry replenishing device for a post-tensioned precast beam slab. The automatic slurry replenishing device for the post-tensioned precast beam slab comprises a beam slab, wherein a slurry inlet duct is formed in the beam slab; the slurry inlet duct is connected with a second slurry inlet pipe; the second slurry inlet pipe is connected with a slurry storage barrel; a first slurry inlet pipe is further connected to the bottom end of the slurry storage barrel; a one-way pressure ball valve is further arranged in the slurry storage barrel, and the one-way pressure ball valve is connected with the first slurry inlet pipe; intelligent slurry pressing equipment is connected to the first slurry inlet pipe; and slurry return duct is further formed in the beam slab, the slurry return duct is connected with a slurry return pipe, and the other end of the slurry return pipe is connected with the intelligent slurry pressing equipment. According to the automaticslurry replenishing device for the post-tensioned precast beam slab, pressurized slurry replenishing is utilized, so that the plumpness and compactness of the ducts are greatly improved, manual slurryreplenishing for many times is not needed, time and labor are saved, and slurry replenishing efficiency and engineering quality are improved; and in addition, one set of the intelligent slurry pressing equipment can be used in coordination with a plurality of sets of the automatic slurry replenishing devices, so that disassembly and installation are convenient, construction speed is improved, andconstruction cost is reduced.

Description

technical field [0001] The invention relates to the field of grouting in the construction of prefabricated box girders, in particular to an automatic grouting device for post-tensioned prefabricated beam slabs and a method for using the same. Background technique [0002] With the vigorous development of railway and highway construction, prefabricated box girder has been widely developed in the field of construction and has become an important part of quality control. The full grouting of the tunnel can effectively prevent the corrosion of the prestressed steel bundle, reduce the anchor load, connect the beam and slab to disperse the stress, and can fully consolidate the steel strand to prevent air erosion and improve the strength of the beam and slab. Although micro-expansive grouting materials are used in grouting construction, the grouting at the end cannot be filled by grouting at one time due to pressure loss and leakage, so grouting is required. In the grouting operati...

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Problems solved by technology

[0003] The above-mentioned grouting technology has the following problems: grouting is easy to produce construction joints, and cannot play the role of consolidating steel strands; manual grouting has no pressure, and anchors cannot be integrated with cement slurry; multiple grouting is time-consuming and labor-intensive

[0005] The above-mentioned device uses gravity for natural grouting. Although it does not need to consume extra power, it still needs to adjust the position of the grout to a suitable height, which is inconvenient for construction, and the effect of adding grout is not very significant in terms of plumpness and fullness.

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