Water pipe one-time pouring molding template and molding method

Abstract

The invention relates to the technical field of high-speed rail tunnel drainage, in particular to a water pipe one-time casting forming template and a water pipe one-time casting forming method. The water pipe one-time casting forming template comprises a circular cut-through cylinder body, an external covering layer and a diameter increase and reduction device, wherein a notch extending in the axial direction is formed in the cylinder body; the external covering layer is arranged on the outer wall of the cylinder body and used for covering the notch; one side of the external covering layer is welded to the outer wall of the part, at one side of the notch, of the cylinder body; the other side of the external covering layer is lapped with the outer wall of the part, at the other side of the notch, of the cylinder body; the diameter increase and reduction device is arranged in the cylinder body; and the diameter increase and reduction device is connected with the inner walls of the parts, on the two sides of the notch, of the cylinder body and used for driving the cylinder body to enable the diameter of the cylinder body to be reduced and increased. In the filling process of an inverted arch filling layer, the template is used as a template frame to be arranged above an inverted arch, after concrete is poured, a central water pipe is formed in the filling layer, a precast concrete round pipe is not required and a bracket is not required to be welded, so that both time and labors are saved, material consumption is reduced and the construction cost is reduced effectively.

Description

technical field [0001] The invention relates to the technical field of high-speed railway tunnel drainage, in particular to a water pipe one-time pouring forming template and a forming method. Background technique [0002] In the existing technology, the drainage system of the tunnel adopts excavating drainage grooves under the inverted arch of the tunnel, but this method is complicated to construct and takes a long time. The tunnel drainage system is constructed by pouring the inverted arch integrally with the pipes. The drainage system in this way is composed of circular drainage pipes, vertical drainage pipes, drainage side ditches or central water pipes, etc. In the prior art, the central water pipe is connected by prefabricated concrete circular pipes. The circular pipes are prefabricated concrete structures with a diameter of 600mm (wall thickness 6cm), and there are two models with a single length of 2m and 3m. With the cooperation of the machine, the precast concret...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a one-time pouring forming formwork for water pipes, which can form intermediate water pipes during the pouring process of the inverted arch filling layer, and solve the problem that the central water pipes in the filling layer in the prior art need to be connected by prefabricated concrete circular pipes. Time-consuming and consumable technical problems; at the same time, further provide a water pipe one-time pouring molding method

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